Excellent video explaining how the battery can provide both 18V and 54V supply and can also be safely transported. Looked everywhere for an explanation so thank you for posting this.
Great video! It helped me troubleshoot a client's battery. Before I watched your video, I was intimidated by the 60v lol . I'm used to working with Milwaukee 18v . Your video helped so much, thank you!
Really good analysis. I run a full range of 20 volt DEWALT tools but use their 60 volt portable saw. I own several 20 volt batteries and 2 Flexvolt. It’s a great system to allow 60 volt power where it is needed but gives high capacity 20 volt where needed like my high volume leaf blower. Having a little more understanding of what’s inside and it works is very helpful. I did not know that the cells were larger than 18650’s
Great video, glad someone did such a detailed breakdown. Not going to lie I was expecting that paperclip to vaporize when he pushed that switch in haha. Surprised they used such heavy wires for signal "switch" especially since all the balance leads are smaller.
Thanks for this! I really enjoy watching all your videos and I was particularly curious how the DeWalt Flexvolt worked and you answered it beautifully.
@@vuaeco Thank you for your videos, always interesting. Do you know what is the BMS current draw limit on the Flexvolt 20v 9AH battery?. I am currently using 3 in series to deliver 54v to power my E-bike at 28A max. However, I am looking into upgrading my E-bike to use 60A at 54V. The cells should be good for 90A draw at 18V (5s3p) but what about the BMS? I would appreciate your opinion, thanks.
Very Good explanation to the battery. I'm Indonesian,no really good in English,but your intonation make me clearly understand for the battery explanation. Thank You Very Much.
Add a little comparison remind me the old records player speed of 33.1\2 & 45 & 78 . I really admire your presentation & delivery especially in your ability to flow of words in a understanding way to educated us to retain this knowledge. Thanks my friend.
Thanks for explaining the contacts short-out. I repaired such a battery and was not sure why the 60V part is not being outputted anywhere when pressing the switch. Looks like that completes the circuit and makes the proper 60V output.
Hey I’m glad I watched your video ! I learned so much . The first one was the way it switches voltage . I am also like you hopping to see more of this in the future. Then the way it’s wired learning that along with the size of the battery’s. That helped me out so much I have an after market battery that’s bad I’m going to rebuild. I would have ordered the wrong battery’s. Then you tell what mAh they use that helped out a lot . I like how you describe everything so plain it’s so easy to understand . I have subscribed to your channel as soon as the video was over. I look forward to learning more in the future you are a great sensei ! I have always wanted to have more wisdom on electronics . I was happy to learn and build a 13.8 volt DC battery charger from an old microwave transformer . An by using 8 AWG wire it has a high amp charge around 30 amp . With a 6 setting porch light timer switch I can set it for 10 min to a hour . I used the vent area off an old hot water tank to make the box I put it all in. Thanks for your great video and all of your wisdom on this battery pack !
Just got the 60 V battery for String Trimmer. Didn't KNOW that it can be used in my 20V Drill and Impact Driver. Yikes...that's GREAT. Thanks for the superb video.
Great vid very helpful! You might find this interesting.. I just disassembled my 6ah DCB606. It stopped working for 60v tools but does still seem to work with 20v. Also the charger will show that it is charged, but I only get 1 bar. Dewalt is sending a new one but told me to recycle or keep the bad one.. Sooo, the fun begins!..lol ; ) I haven't tested for bad cells yet which is what I believe the original problem may be. But, when I opened it I immediately noticed (Per your diagram) the BMS -3 right side connection is burnt completely out, and -5 shows heat damage, but is still intact. Debating how to proceed.? I'll test the cells tomorrow and post what I find. Thanks for making the vid!
Hi... Very informative...my brother is having issues with his...i used to replace NICAD Cells but not tuned into these cells.. Do these cells have that much more voltage(3.5) vs 1.25 NICAD or are two cells stacked to make one cell? Thanks again for video...Joe
Great Video! I believe the 21700 cells are used by Dewalt for the following reasons; 1) better heat disipation (for bigger tools), 2)21700 can go all the way up to 5000mah per cell, 3)the physically bigger cell can deliver the same current as the 18650 without heating up as much per watt delivered. 4) by using the 21700 now with the 21700 in rather early production they can take advantage of the improvements with the new 21700 of higher capacity without changing anything except the cells. They will probably use the same BMS and definitely the same packaging so very little work to get even beyond 12ah batteries!
I just took a 6ah pack apart that is built the same way. It takes a lot of skill and time to get the cells free since the black plastic on the sides goes over and under the metal tabs. It took me 3 hours to get it all apart. It's also difficult to not short anything out. I had one cell that was zero volts and the four other cells in series were over charged to 4.42v.
I find it’s just easier to cut the plastic out around the cell your replacing. If your doing a full rebuild it would make sense to take the time to desolder everything. But if your repairing an old pack with old cells it just makes sense to make a quick repair on a pack that will soon fail.
Thx for nice video buddy . You help me very very much i buy next step 9ah . I initially thought that the 9ah batteries had 18650 cells and wanted to know whether there were 21700 in them or not. I wonder if I take the new 8ah 20v or the 9 ah flexvolt is now a crucial question for me. Because the 8ah 20 v 21700 have something coming in 2020 or prefer the 9 ah 21700 in case I take it with me increase flexvolt devices.
I’m guessing that transportation cover not only turns off power to the terminals but also turns off power to the circuit board. That would make the most sense to solve the parasitic draw from the circuit board while the battery is in storage.
Hello that was a very good explanation I want to ask a question please Ihave a good few of those batteries ,, they will not see the charger (will not chargred on Dewalt 118 charger) Iwantto use the battery for other battery likeparkside bosh hitachi etc ,,you know I can change the main board to different battery once I use the mainboard for the one which I want to converted ..now my question is there is +,- and 4 wire how can I rewire it? is there any webpage it does show the first and seconed row of the battery and the 3rd row thanks
Nice video, thank you. Did you determine what that extra set of contacts did on the 60V tool. If you did not insert that paper clip jumper did the battery still switch to 60V when you closed the slider switch? Or are those contacts used as a second confirmation that a 60V tool is inserted?
looking for a DCB609 circuit board protector. I have 2 batteries with one terminal melted. Appreciate the help. Keep coming up with dcb200 stuff. Not even what I am looking for.
Hello. Thanks for the explanation. Do you know if I can charge this battery pack with the charger of a Ninebot Mini Pro instead of using the Dewalt charger? The Ninebot Mini Pro uses a 54V 15S battery pack too, so I don't know if I can use the Ninebot charger and how I have to connect it to the Dewalt pack. The output is 63V 2A. Thanks.
Please do a teardown of the 60v greenworks battery. My battery will charge but only discharge to 56 volts. I'm thinking there is a voltage limiter/regulator issue in the battery itself. Can't seem to find replacement parts or any idea where it would be located.
Excellent analysis of the battery. Couple of questions though: 1. Are you inferring that that the -5 terminal is temporarily connected to the negative output pin or are you basing this on observation of the wires? Reason I ask is because it doesn't seem necessary since it would be connected in parallel in 20V configuration anyway. 2. What purpose does the jumper serve? I would guess it has something to do with onboard monitoring of tool function but not certain. Subbed and looking forward to getting a closer look at the terminal connections behind the switch!
1. That's correct. At 23:30, the (-5) terminal is moved to a different position. So yes, it is just a temporary connection until the switch is pushed in. 2. I think you're correct about the jumper (for the black and red wires). And I also think it serves both as a monitoring tool and current carrying wires. There's a reason why these 2 wires are so thick.
*when he showed pushing the tabs partially in disrupts the flow of electricity, im like, and? But when he got to @**9:30** , Mind blown.. Brilliant! :P Great Video!*
One of my batterys are conected backwards. When I use my trimmer with one battery it spins one way and when I use another battery it spins the other way.
Well those 25r cells were just 2.9v when got them but the seller said can return them as he has some 3.5v ones to swap but I’m just charging again to see .its a 14s5p kit but wired in series 6s5p to 6s5p to 2s5p for balance purposes
Very informative video thank you. I am looking to see why my 9.0 battery won’t charge. I checked all cells they all are equal 3.4 volts and all the series are equal 17 volts. Any idea why it wouldn’t accept charge?
Wonder why "switch" terminals in middle of pack have such large wires going to PCB/ BMS? One would think a simple switch could use thin wires like balance wires of BMS. These look very thick like they are meant to carry a lot of current!
Love your channel, it's great. What is the voltage of the fully charged flex volt. Is it 20v or 21v, which would be 4.2v x 5 batteries? Trying to see if my batteries are still holding voltage. Thanks
Hey, can You help me little bit? My 60 volt tool Works on 9aH battery but 20 volt tool no. Also my charger don’t want charge it. I did it from other full charged battery. And I found that one cell c3( I try c3 and b-) is low voltage (2.6volts) have any idea ? In good battery in (c3 and b- ) is 11,9 volts? Maybe I can charge it separately? But I don’t know with is c3
I truely enjoyed your knowledge on this battery pack. I have to ask you a question of jumping these batteries with another pack to get it to take in the battery charger. You have seen these video's. Now when and if you jump this pack should you push the slide button in to jump it so all batterys are on board because other wise only the one set of batterys( as per 18/20 volt )would get the jump charge benefit!! You know what I mean. Thanks my brother!! Montana Rick.
im still thinking about to change to the flexvolt systen before i ended up with too many tools. i have 2 drills, one of them doesnt work, and one 18V anglegrinder. and all of my 5 batterys are shit/done and i also dont have a charger.
Great video, very clever! I'm hoping you might help me figure out something - I want to convert a dewalt 54V angel grinder to work on a 52V 15Ah (30Q cells) ebike battery pack, do you think this is possible? I guess i would have to open up the unit and change the connector to fit my ebike battery that I would wear as a backpack. Do you think dewalt have included electronics to recognise only their own brand battery? The battery I have is fantastic and i want to be able to use it for other things besides the ebike! Thanks
That's a great idea! But Dewalt tools have some extra pins beside the main terminals in order for them to recognize their own batteries. I've tried different batteries connected to a Dewalt tool using only the main terminals but that didn't work. The tool wouldn't power on with just the main terminals connected.
Ah ok, nevermind! Thanks for replying so fast. I need to convert any 54v M14 spindle cordless angle grinder to a drill and run it off a larger battery due to remote operations. It is a pity that manufacturers do this, so many batteries go to waste and are left lying around for too long. If you can think of any other solution I'd love to hear.
I am also interested in powering Dewalt 60v tools with other batteries and I found your teardown video extremely helpful. I believe if a thermistor resistance (~10k Ohm) is applied between the tool's B+ and TH terminals, and voltage is applied between B- & C1/C3 and B- & C4, then the tool should operate. It would help me greatly if someone with a flexvolt battery measured those voltages and the resistance while the battery is in its 60v configuration. vuaeco, would you be willing to do that? Thank you.
Welcome. Why does the Dewalt battery cut off when it turns to 60 volts? I changed all the cells to LG, and the same problem. The chainsaw works for a few seconds and stops❤
what cells are used in the 6.0ah flexvolt batteries currently in 2020? They have changed the logo sticker on the side even. I tried contacting Dewalt, and they claim they can't divulge that info??
Hi I added some extra bridge wire on parallel row and it’s working better now after next charge I did about 7mile and I added an on bike volt meter and apart from when on throttle when it drops to 40v under load it stayed at the lowest 49v this run
I'm not using pas sensor and will check tyre pressures again but what sort of range might you expect from the 52v 14s5p Samsung 25r 50 cells and Panasonic 2600mah x 20
Hello, I have watched your video many times. I have a 54V dovolt chain saw, and I have an idea to connect a battery from an electric bike to it, it also has such a voltage. I bought a devolt battery designer on aliexpress to take clamps from it. then the tool didn’t work. There is a board on the Clems and there is a temperature sensor there, I didn’t connect the balancing wires, they just dangled. Help me figure it out if possible Thanks)
The reason use 2170 than 18650 is the same reason telsa using model3 vs model S which is more energy density. When 2170 has the same cap as 18650 it increase the life cycle and can be upgrade not just from 2Ah cell to 3Ah but also 4or even 5Ah in the future
Brushed generates lots of heat due to friction. And that also means wasted power. If you use it a lot, brushless makes more sense. And if you're thinking about over-volting the motor, brushless makes even more sense.
They power pins are the same for 20v and 60 volt tools.. the 2 terminals with the black and red wires going to the circuit board is the charging circuit.. the charger sends power in those wires to the board which Balance charges the cells.. c1, c2, c3 is for the tool and charger to monitor balance circuits of the battery along with pack temp.. the mechanical switch is the only thing that they changes the voltage coming out of the battery.. so you half right
Excellent video explaining how the battery can provide both 18V and 54V supply and can also be safely transported. Looked everywhere for an explanation so thank you for posting this.
THE BEST VIDEO EVER EXPLAINING BATTERIES FOR CORDLESS TOOLS. CONGRATULATIONS!! KEEP ON PUSHING MY FRIEND
Looked up so many videos on dewalt batteries and this is by far the best! Very well explained and straight to the point 👍
Agreed, Google was useless.
Asian RUclips guys have the goods.
Don't know why but I enjoy your accent and explanation.
You're my hero. Just finished rebuilding one of these packs and needed a quick way to verify it was spitting out both voltages correctly.
The best video on the mechanism of voltage switching I have seen by far. Thanks!
Long story short. Is it safe for me to rig the switches on a 20v tool?
Great video! It helped me troubleshoot a client's battery. Before I watched your video, I was intimidated by the 60v lol . I'm used to working with Milwaukee 18v . Your video helped so much, thank you!
Great detail on how these packs work. Thanks for sharing the drawings also!
Really good analysis. I run a full range of 20 volt DEWALT tools but use their 60 volt portable saw. I own several 20 volt batteries and 2 Flexvolt. It’s a great system to allow 60 volt power where it is needed but gives high capacity 20 volt where needed like my high volume leaf blower. Having a little more understanding of what’s inside and it works is very helpful. I did not know that the cells were larger than 18650’s
Great video, glad someone did such a detailed breakdown. Not going to lie I was expecting that paperclip to vaporize when he pushed that switch in haha. Surprised they used such heavy wires for signal "switch" especially since all the balance leads are smaller.
Thanks for this! I really enjoy watching all your videos and I was particularly curious how the DeWalt Flexvolt worked and you answered it beautifully.
My pleasure.
@@vuaeco Thank you for your videos, always interesting. Do you know what is the BMS current draw limit on the Flexvolt 20v 9AH battery?. I am currently using 3 in series to deliver 54v to power my E-bike at 28A max. However, I am looking into upgrading my E-bike to use 60A at 54V. The cells should be good for 90A draw at 18V (5s3p) but what about the BMS? I would appreciate your opinion, thanks.
Very Good explanation to the battery.
I'm Indonesian,no really good in English,but your intonation make me clearly understand for the battery explanation.
Thank You Very Much.
This is brilliant! Great explanations, very informative. Well done!
This is awesome! Thank you for sharing! You answered so many questions I had, and even ones I didn’t. Much appreciated
Great video. Totally helped feel more comfortable using flex batteries on older 20v tools knowing what triggers the battery switch to 60v.
Add a little comparison remind me the old records player speed of 33.1\2 & 45 & 78 . I really admire your presentation & delivery especially in your ability to flow of words in a understanding way to educated us to retain this knowledge. Thanks my friend.
Thank you so much, I didn't see this video before this has been out for a while now!
Thanks for explaining the contacts short-out. I repaired such a battery and was not sure why the 60V part is not being outputted anywhere when pressing the switch. Looks like that completes the circuit and makes the proper 60V output.
Awesome video, great job figuring this battery pack out and great job displaying battery layout of this pack. Great video!
Thanks Mike!
Great video, thanks for your help figuring this out!!
Very nice presentation - keeps me from opening mines up for now. Thank you ,
Hey I’m glad I watched your video ! I learned so much . The first one was the way it switches voltage . I am also like you hopping to see more of this in the future. Then the way it’s wired learning that along with the size of the battery’s. That helped me out so much I have an after market battery that’s bad I’m going to rebuild. I would have ordered the wrong battery’s. Then you tell what mAh they use that helped out a lot . I like how you describe everything so plain it’s so easy to understand . I have subscribed to your channel as soon as the video was over. I look forward to learning more in the future you are a great sensei ! I have always wanted to have more wisdom on electronics . I was happy to learn and build a 13.8 volt DC battery charger from an old microwave transformer . An by using 8 AWG wire it has a high amp charge around 30 amp . With a 6 setting porch light timer switch I can set it for 10 min to a hour . I used the vent area off an old hot water tank to make the box I put it all in. Thanks for your great video and all of your wisdom on this battery pack !
Just got the 60 V battery for String Trimmer.
Didn't KNOW that it can be used in my 20V Drill and Impact Driver.
Yikes...that's GREAT.
Thanks for the superb video.
Wow. This guy is like the David Attenborough of eleccy. just over 9 mins in and hooked. Subscribed lol!
Great video thanks, very informative
Thanks Jim
Brilliant video! Thank you so much for making this.
Thank you sir for the detailed explanation. Helps me a lot. God bless.
great video thanks for all your work
Very good explained and interesting 20v....60v.
Thank you for this i have been trying to figure this out
Great explanation on these DeWalt batteries...
Can't wait for the new power stack battery teardown
Thank you for explaining. You are very intelligent
detailed analysis, thanks for your video
Very interesting and useful video thank you for your content
Me encanto el video , bien explicado
Muito bem explicado ! Parabéns ! !
It was a nice lecture teacher!
Great vid very helpful! You might find this interesting.. I just disassembled my 6ah DCB606. It stopped working for 60v tools but does still seem to work with 20v. Also the charger will show that it is charged, but I only get 1 bar. Dewalt is sending a new one but told me to recycle or keep the bad one.. Sooo, the fun begins!..lol ; ) I haven't tested for bad cells yet which is what I believe the original problem may be. But, when I opened it I immediately noticed (Per your diagram) the BMS -3 right side connection is burnt completely out, and -5 shows heat damage, but is still intact. Debating how to proceed.? I'll test the cells tomorrow and post what I find. Thanks for making the vid!
Great video with explanation and proof of measurements.
My batter has correct voltages but no charge. The BMS is the issue?
GOOD JOB!!! very ANALYTICAL!!!
XChaoticComposerX
Thanks :)
:)
Exellent vídeo!
Never seen before!
Hi...
Very informative...my brother is having issues with his...i used to replace NICAD
Cells but not tuned into these cells..
Do these cells have that much more voltage(3.5) vs 1.25 NICAD or are two cells stacked to make one cell?
Thanks again for video...Joe
I kinda like that "old school" intro jingle :)
good vid l understood it all the way , well done ..
Thank you!! Excellent explanation!!
Great Video! I believe the 21700 cells are used by Dewalt for the following reasons; 1) better heat disipation (for bigger tools), 2)21700 can go all the way up to 5000mah per cell, 3)the physically bigger cell can deliver the same current as the 18650 without heating up as much per watt delivered. 4) by using the 21700 now with the 21700 in rather early production they can take advantage of the improvements with the new 21700 of higher capacity without changing anything except the cells. They will probably use the same BMS and definitely the same packaging so very little work to get even beyond 12ah batteries!
Great reverse engineering and explanation
Спасибо, что так популярно объяснил!!! Очень полезное видео!
I just took a 6ah pack apart that is built the same way. It takes a lot of skill and time to get the cells free since the black plastic on the sides goes over and under the metal tabs. It took me 3 hours to get it all apart. It's also difficult to not short anything out. I had one cell that was zero volts and the four other cells in series were over charged to 4.42v.
I find it’s just easier to cut the plastic out around the cell your replacing. If your doing a full rebuild it would make sense to take the time to desolder everything. But if your repairing an old pack with old cells it just makes sense to make a quick repair on a pack that will soon fail.
what cells are in the 6ah?
@@rynolda They were 30a 2000 mah cells, I believe from Samsung
@@rynolda Samsung inr18650-20s
Great video thanks for time and effort making them.
They could also be the same LGHBHE2 18650's
From My Milwaukee 5Ah battery
( just 21700 cells
This is awesome. Good video
Thx for nice video buddy . You help me very very much i buy next step 9ah . I initially thought that the 9ah batteries had 18650 cells and wanted to know whether there were 21700 in them or not. I wonder if I take the new 8ah 20v or the 9 ah flexvolt is now a crucial question for me. Because the 8ah 20 v 21700 have something coming in 2020 or prefer the 9 ah 21700 in case I take it with me increase flexvolt devices.
I’m guessing that transportation cover not only turns off power to the terminals but also turns off power to the circuit board. That would make the most sense to solve the parasitic draw from the circuit board while the battery is in storage.
Hello
that was a very good explanation
I want to ask a question please
Ihave a good few of those batteries ,, they will not see the charger (will not chargred on Dewalt 118 charger)
Iwantto use the battery for other battery likeparkside bosh hitachi etc ,,you know I can change the main board to different battery once I use the mainboard for the one which I want to converted ..now my question is there is +,- and 4 wire how can I rewire it?
is there any webpage it does show the first and seconed row of the battery and the 3rd row
thanks
Bit long, but very informative. Great video.
It would have been shorter if he had been any more reckless with his fingers or his metal caliper.
Nice video, thank you. Did you determine what that extra set of contacts did on the 60V tool. If you did not insert that paper clip jumper did the battery still switch to 60V when you closed the slider switch? Or are those contacts used as a second confirmation that a 60V tool is inserted?
Not 100% on this but I am almost certain they talk to the charger regarding it temperature so they dont over heats.
looking for a DCB609 circuit board protector. I have 2 batteries with one terminal melted. Appreciate the help. Keep coming up with dcb200 stuff. Not even what I am looking for.
Amazing video thanks man 👍👍🍻
Hello.
Thanks for the explanation.
Do you know if I can charge this battery pack with the charger of a Ninebot Mini Pro instead of using the Dewalt charger? The Ninebot Mini Pro uses a 54V 15S battery pack too, so I don't know if I can use the Ninebot charger and how I have to connect it to the Dewalt pack. The output is 63V 2A.
Thanks.
Please do a teardown of the 60v greenworks battery. My battery will charge but only discharge to 56 volts. I'm thinking there is a voltage limiter/regulator issue in the battery itself. Can't seem to find replacement parts or any idea where it would be located.
Thanks. Now I will buy the 60volt system. I already have many old 18 volt tools and 20 volt tools. I hate to throw away all that money.
excellent. We can use your video to train our engineer 😇
Very well done new sub. Was considering making 60v ebike battery out of 4 of them?
Excellent analysis of the battery. Couple of questions though:
1. Are you inferring that that the -5 terminal is temporarily connected to the negative output pin or are you basing this on observation of the wires? Reason I ask is because it doesn't seem necessary since it would be connected in parallel in 20V configuration anyway.
2. What purpose does the jumper serve? I would guess it has something to do with onboard monitoring of tool function but not certain.
Subbed and looking forward to getting a closer look at the terminal connections behind the switch!
1. That's correct. At 23:30, the (-5) terminal is moved to a different position. So yes, it is just a temporary connection until the switch is pushed in.
2. I think you're correct about the jumper (for the black and red wires). And I also think it serves both as a monitoring tool and current carrying wires. There's a reason why these 2 wires are so thick.
*when he showed pushing the tabs partially in disrupts the flow of electricity, im like, and? But when he got to @**9:30** , Mind blown.. Brilliant! :P Great Video!*
One of my batterys are conected backwards. When I use my trimmer with one battery it spins one way and when I use another battery it spins the other way.
Well those 25r cells were just 2.9v when got them but the seller said can return them as he has some 3.5v ones to swap but I’m just charging again to see .its a 14s5p kit but wired in series 6s5p to 6s5p to 2s5p for balance purposes
Very informative video thank you. I am looking to see why my 9.0 battery won’t charge. I checked all cells they all are equal 3.4 volts and all the series are equal 17 volts. Any idea why it wouldn’t accept charge?
Probably BMS is bad.
Wonder why "switch" terminals in middle of pack have such large wires going to PCB/ BMS? One would think a simple switch could use thin wires like balance wires of BMS. These look very thick like they are meant to carry a lot of current!
awesome video!
Thanks.. this is brilliant!
Exelent information 👍👍
verry good information
thanks for the info
Subscribed your a genius.
Love your channel, it's great. What is the voltage of the fully charged flex volt. Is it 20v or 21v, which would be 4.2v x 5 batteries? Trying to see if my batteries are still holding voltage. Thanks
21
Hey, can You help me little bit? My 60 volt tool Works on 9aH battery but 20 volt tool no. Also my charger don’t want charge it. I did it from other full charged battery. And I found that one cell c3( I try c3 and b-) is low voltage (2.6volts) have any idea ? In good battery in (c3 and b- ) is 11,9 volts? Maybe I can charge it separately? But I don’t know with is c3
I truely enjoyed your knowledge on this battery pack. I have to ask you a question of jumping these batteries with another pack to get it to take in the battery charger. You have seen these video's. Now when and if you jump this pack should you push the slide button in to jump it so all batterys are on board because other wise only the one set of batterys( as per 18/20 volt )would get the jump charge benefit!! You know what I mean. Thanks my brother!! Montana Rick.
Pretty cool engineering
im still thinking about to change to the flexvolt systen before i ended up with too many tools. i have 2 drills, one of them doesnt work, and one 18V anglegrinder.
and all of my 5 batterys are shit/done and i also dont have a charger.
Do you have a full stripdown on this This battery? I've tried looking through your videos but can't find anything
Thank you!
Great video, very clever! I'm hoping you might help me figure out something - I want to convert a dewalt 54V angel grinder to work on a 52V 15Ah (30Q cells) ebike battery pack, do you think this is possible? I guess i would have to open up the unit and change the connector to fit my ebike battery that I would wear as a backpack. Do you think dewalt have included electronics to recognise only their own brand battery? The battery I have is fantastic and i want to be able to use it for other things besides the ebike! Thanks
That's a great idea! But Dewalt tools have some extra pins beside the main terminals in order for them to recognize their own batteries. I've tried different batteries connected to a Dewalt tool using only the main terminals but that didn't work. The tool wouldn't power on with just the main terminals connected.
Ah ok, nevermind! Thanks for replying so fast. I need to convert any 54v M14 spindle cordless angle grinder to a drill and run it off a larger battery due to remote operations. It is a pity that manufacturers do this, so many batteries go to waste and are left lying around for too long. If you can think of any other solution I'd love to hear.
I am also interested in powering Dewalt 60v tools with other batteries and I found your teardown video extremely helpful. I believe if a thermistor resistance (~10k Ohm) is applied between the tool's B+ and TH terminals, and voltage is applied between B- & C1/C3 and B- & C4, then the tool should operate. It would help me greatly if someone with a flexvolt battery measured those voltages and the resistance while the battery is in its 60v configuration. vuaeco, would you be willing to do that? Thank you.
The one battery needed is a
60v power stack
Can you go over how to make a 60v power stack please
I'll have to build one
Welcome. Why does the Dewalt battery cut off when it turns to 60 volts? I changed all the cells to LG, and the same problem. The chainsaw works for a few seconds and stops❤
good video thank you
I have so many 60v volts that come up instantly saying it's charged but they are dead. Issue?
great items at a great price
what cells are used in the 6.0ah flexvolt batteries currently in 2020? They have changed the logo sticker on the side even. I tried contacting Dewalt, and they claim they can't divulge that info??
hello, can you help me find a board for a flexvolt devalt 60volt battery, since the microcircuit is out, the board now does not take charge?
Great video can this battrey be balance charged on an imax b6 as the dewalt charger wont charge it at the moment
yes it can
Is there any thing be done batteries replacement?
hi seer my dewalt charger damage can i use power supply to charge battery
Hi I added some extra bridge wire on parallel row and it’s working better now after next charge I did about 7mile and I added an on bike volt meter and apart from when on throttle when it drops to 40v under load it stayed at the lowest 49v this run
That's good. But your voltage drop is still a bit too much, though.
I'm not using pas sensor and will check tyre pressures again but what sort of range might you expect from the 52v 14s5p Samsung 25r 50 cells and Panasonic 2600mah x 20
Hello, I have watched your video many times. I have a 54V dovolt chain saw, and I have an idea to connect a battery from an electric bike to it, it also has such a voltage. I bought a devolt battery designer on aliexpress to take clamps from it. then the tool didn’t work. There is a board on the Clems and there is a temperature sensor there, I didn’t connect the balancing wires, they just dangled. Help me figure it out if possible Thanks)
The reason use 2170 than 18650 is the same reason telsa using model3 vs model S which is more energy density. When 2170 has the same cap as 18650 it increase the life cycle and can be upgrade not just from 2Ah cell to 3Ah but also 4or even 5Ah in the future
Yes need ask someone to weld s sprocket is there a lot of difference to brushless an brushed ?
Brushed generates lots of heat due to friction. And that also means wasted power. If you use it a lot, brushless makes more sense. And if you're thinking about over-volting the motor, brushless makes even more sense.
They power pins are the same for 20v and 60 volt tools.. the 2 terminals with the black and red wires going to the circuit board is the charging circuit.. the charger sends power in those wires to the board which Balance charges the cells.. c1, c2, c3 is for the tool and charger to monitor balance circuits of the battery along with pack temp.. the mechanical switch is the only thing that they changes the voltage coming out of the battery.. so you half right
In the uk, our batteries are rated 18v & 54v. Fully charged.