Build Custom Long Range FPV 18650 Batteries - Long Range FPV Battery - Make a Li-Ion Battery Pack
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- Опубликовано: 10 сен 2024
- In this video I describe step by step how to create your own custom li-ion battery cell for extended FPV flight times. You can use this battery in any number of application but in my case i'm using it to fly the flywoo explorer.
Please be careful when making these as it can be dangerous. This is your responsibility to stay safe.
Equipment List:
Soldering Iron: amzn.to/3nF3irb
Tin Strips: amzn.to/3nLL33v
Xt60 connectors: amzn.to/2Lr09yq
Pre-Made XT60: amzn.to/2XGOmys
XT30 Connectors: amzn.to/3oETQpb
Pre-Made Xt30: amzn.to/3ssgC67
Hot Glue Gun: amzn.to/3icTWlk
Lead Free Solder: amzn.to/2XCfmz7
Sony VTC6 Battery: liionwholesale...
Molicel 21700 Cell: liionwholesale...
If you absolutely insist on soldering (a powerbank style spot welder that can do 0.15mm thick pure nickel strips is ~$60) then you MUST have at least a 60W iron. Preferably 80W or 100W. Time on cell is crucial. You're tinning the cell twice, adding the nickel twice and then adding the leads (which should go on the nickel in between the cells when possible). If you spend more than 5 seconds on each per soldering event you're killing the cell. Less capacity, less cycles in lifespan, more likely to suffer catastrophic failure.
This instructional is showing you how to bake the cells, the first solder joint to the first cell is 35 seconds. Start by tinning your iron tip. Heat transfers best that way. Add rosin flux to everything you are going to solder. Start by soldering a blob to each side of the cell. Then add a blob to each end of each nickel strip. Then start connecting the cells with nickel.
Get a laser thermometer so you can check the temps. You want the case of the cell to be cooled down to 40 Celsius or less before you go at that cell again. You never want the case to exceed 160 Celsius or you're teetering on the interior of the cell heading towards thermal runaway.
I would advise using an insulator ring on the positive side since the edge of the top is negative
One more time: 5 SECONDS MAX PER JOINT. 3 SECONDS PREFERABLY. FLUX IS YOUR FRIEND
You forgot to mention to make all the balance leads the same length, I also always use a spot welder and insulation boards on the ends , one with a hole in the center to run the power and balance leads out of , then heat shrink the battery
I would add to this method to pay special attention when soldering the strips to the positive side. Using too much heat on the strip, could melt through the insulation of the negative side, shorting the battery. I would punch a hole through the strips so the solder on the positive side flows through it and holds it in place, so the time spent with the iron on the battery is shorter. Also, sanding a bit the battery heads before applying solder will make it faster.
I tried to show a way most people with general tools can do. As long as you don’t hold the solder too long it’s pretty good. Really a much bigger tip melts the solder faster and transfers less heat. A spot welder is ideal too. Your right though there could be some improvements to making them. Honestly a lot more goes into making nice liion packs. These will work for anyone looking to DIY though. Lol.
@@KAREKINFPV Will these Li-Ion cell work for my below hex?
1)Frame:Tarot 680 PRO Folding Hexacopter Frame
2)Motors:6x Tarot 4108 High Power Brushless Motor (380kv)
3)Propeller:3x Tarot 1355 Carbon Propellers (Two Holes / CW and CCW)
4)ESC (Electronic Speed Controls):6x Hobbywing XRotor 40A-OPTO ESC
3.11 .....soldering the two positives and two negatives together, will make them in parallel and they won't explode. The current delivered is greater in parallel.
5:42 I chuckled hehe
Use solder paste that'll easily solder them to battery
I bought a huge drone collection from a guy and he had a bunch of these battery packs. It came with a venom 4s battery charger but I have no idea how much of a charge I should put on them. He already had everything preset but I don't want to blow them up so how much should I charge them up to? And how low should I drain them?
So informative ❤
I'm going to try this soon and when I'm done I'm going to feel like a bomb maker.
Am I correct in my assumption if I want to make a 6s I just add two more batteries to the stack and "the river" is just a little bit longer?
Yes so 6 batteries together means 6s and 4 batteries is 4s from my understanding
soldering two positives together dose not short out the battery and it will not explode. out a 2s it creates a 1s.
Ur totally right, I meant to say neg -> pos and pos -> neg on the same two batteries,
Round is ground. My trick for remembering.
😀👍🏻
Should I use these batteries for a 6s2p pack for 7" drone ? I calculated the weight = 840g. Where the 18650 @6s2p = 528g.
That's 312g more if I use the 21700. Which one you think I should use ?
I actually dont like 2p packs for LR the extra weight doesnt add equal flight time. And it makes the drone harder to control. I like a regular 6s 4200mah
@@KAREKINFPV OK, which would you prefer 6s2p 18650 or 6s1p 21700 ?
@@PerchEagle if your quad requires a lot of current draw, then you'll need 2p to get the extra discharge current
What temperature is “nice and hot”??
800f
God damn it, after seeing how much time you spend holding your iron tip on the battery, I'm getting really frustrated, because my cells died and I only heated them for like half your time.
Oh bummer man. Im sorry. Im not sure whats going on here? I use my temp set at like 800 with the largest tip i can find. I also ise tin free solder. How are you soldering?
Feel free to find me on FB and message me.
I'm planning to make one of the larger 21700 6s packs for my 7inch I'm building. Planning to use the molicell p42A 45A cells. Curious as to how you figured out what size nickel straps to use? I just want to make sure there is enough there for the amps.
Hello bro my Quadcopter draws less than 20 amp can I use santo 18650ga to build 3s2p battery pack pls help me out and pls suggest me
I would honestly swap to 4s or 6s if you’re making 3s 2P the higher the voltage the lower the amp draw. So on 3s youll pull 20amps, on 4s you’ll pull 12-15 on 6s you’ll pull 5-10 as an example.
@@KAREKINFPV then finally 4s2p sanyo 18650 ga will this this be good
@@KAREKINFPV can I get ur whatsapp number
@@KAREKINFPV how will be molicel p42a in 4s1p config as compared to 18650
@@sricharan7287 this is what we sell on LiionRC.com ready made! It works well on a 5” LR like a rekon 5 or chimera 5
Could a bunch of capacitors be added to give a good burst of higher voltage for quick throttle punches?
Thats a good idea. It would be worth an experiment for sure. But youd need to test the amp draw at the caps vs the amp draw at the pack some how.
No. The capacity even of „big“ capacitors is to small for a motor.
Is it good idea to make 3s li-ion packs fro 4" like flywoo explorer??
I actually don't thin so because I think the min cell voltage would be too low to keep it flying. You'd need to get higher KV 3s motors at least. But the min cell voltage on a 3s liion is the max cell voltage of a 2s. I don't think a flywoo will fly on a 2s.
@@KAREKINFPV I was writing about flying it on 3s not 2s. I have chimera 4" with 3800kv and it flies all right on 3s LIPO packs with just 25C discharge rate. Hance if same done on 3s Li-ion- it could fly maybe even better and longer with significantly reduced weight - as 1cell less in a pack will make it lighter. Did you try? I was about to find out but just missing tools and decent 18650 cells to make a pack.
@@VictorSeedorsky yea your not understanding my point. Liion flys to a lower voltage per cell. 2.5v so I don’t think it would fly when a 3s was at a lower voltage. For example 3v per cell 3x3s = 9v I don’t think the lead would stay in the air at 9v let alone. 7.8v when the cells are 2.6v each.
Have you had any hard crashes, and if so, how did they go? Have any ever caught fire?
Haha yea actually very recently. I was about 30ft up and i hit gps rescue on accident and it disarmed and slammed into the road. No issues, no fires. But it all depends on how much protetion you include. Its best to wrap them in fish paper and seal with two layers of shrink wrap. I rarely fly these types of builds in a freestyle way. So crashing hard doesnt happen often.
@@KAREKINFPV haha oops! Good to know it stood up to that pretty decent crash. Thanks for the additional tests, too
@@JaydenLawson absolutly. Im trying to start my channel back up. Im doing a video on a speedybee master 5 03 build soon. Please be sure to stay tuned.
@@JaydenLawson betaflight gps… go figure. 🤦🏼♂️
@@KAREKINFPV pretty unpredictable hey? Have only flown KISS FCFC with GPS, never used its RTH yet tho...
.6mm solder is too small for this. I would use 1.0mm
great video, but careful kids you need to be safe. soldering onto a battery is not ideal but you want to be really careful on the positive end that you dont breach the insulating material (green wrap) the casing underneath is negative and a solder ball might short it. Spot welding is much safer.
Yes your absolutely correct.
Hi~
Let me ask you a question.
It's a 3 inch cine hoop.
In the video, there are videos of making a pack with 4 lithium-ion 18650 batteries and flying it with an FPV long range.
With excitement, I ordered batteries and made a pack.
LGDBHG21865 3000mA.
The problem is... When I hovered, the yaw tick symptom reappeared after it came up, and, after a few seconds, the low-voltage buzzer sounded and the aircraft sank.
If I open it again, it opens again,,,,, repeat...
So, I changed the low voltage warning in Beta Flight to 2.7V, and when I turned it on, there was no sound.
If I take a break for a while, it will float again. But it sinks again... The battery is hot, and the voltage is 3.8V... TT
I bought 40 tablets... but I can't use them all?
How do people use? Batteries were also made by buying anything.
Is my FC the problem? Or is there a special setting for Li-ion?
FC is IFlight SucceX Mini F4 V3 Stack, and the manual says 2~6 Lipol. Do I have to use only Lipol? Can I change FC?
Why is this happening?
It's a waste of money/work time.
I'm serious~~ Please advise.~~ TT
I tried the same as you and faced the sad truth, I had jumping drone like a Kangaroo. Your batteries' continuous current rating is low, (approx 2A) , you need high current capable 18650s like Sony VTC5 or VTC6 18650s (15A continuous/30A max)
LOVING THE CONTENT! I'M SUBBING! 😍😍😍😍😍
Thanks so much! I appreciate the love!
@@KAREKINFPV no problem mate you deserve it!
What batteries are you using
Can you please tell me where to find the 4s balance leads? Thanks in advance and thank you for the great tutorial. ✌️
If your in the US just buy the pack from LiionRC.com
@@KAREKINFPV yep, in Minnesota so that works. Thanks again. Subbed.
Hi bro
I have a quadcopter
With spec
Dji f450 Frame
Apm2.8 Fc
920kv motors
30a simonk esc
1045 propellers
M8n gps
Fsi6 tx and and rx
If I make a battery pack like u will it work for me pls reply
The nasty lipo are wasting my money as i just entered into the hobby iam nit having that much money with me
Love from india
Thanks for the comment, I don't believe this pack would allow for enough amp draw with those motors. You would most likely need a 21700 sized pack.
@@KAREKINFPV molicel p42
ecko
Don't it need BMS?