LiFePO4 BMS Broken Not Turn On, Step By Step Fault Finding
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- Опубликовано: 21 апр 2021
- My website (still under construction)
www.solarpowerchannel.co.uk
Get in touch solarpowerchannel@hotmail.com
*****Tutorials*****
Wiring Up A BMS
• LiFePO4 BMS Wiring Up ...
*****Parts*****
LifePO4 Battery 12v Always use a BMS for safety. (AliExpress)
s.click.aliexpress.com/e/_Ab8A99
LiFePO4 BMS - Bluetooth (AliExpress)
s.click.aliexpress.com/e/_99cHDO
Multimeter & Oscilloscope (AliExpress)
s.click.aliexpress.com/e/_AVTsug
Pure Sine Inverter (AliExpress)
s.click.aliexpress.com/e/_A6nhVe
YOU ARE A LEGEND!!!!!! Tried a bunch, never heard about connecting the charger! Wow
Worked, cheers fella.
Great content
great video thanks very much . I have a 48v 300ah lithium battery and ive been trying to work out why my inveter ( I have tried growatt & epever inverters and chargers, ). won't charge it over 50v , I am thinking the BMS won't allow it . have you seen this before? I am wanting to try a new BMS to see if that will get it up to 54v
You can find hundreds of videos on damaged BMSs and how to easily replace them but there is no one explaining why a BMS gets damaged? As we know, BMS is designed to protect batteries against overcharging, discharging and turning OFF when one of the battery sections has a different voltage than the others. So, my question is why the BMS is damaged in 80% of cases and this effect has nothing to do with the condition of the battery?
Can you advise please. Intro duction I am aware that input via DC to DC and solar is into BMS what I am not sure is the output to blade fuses from P1 on BMS and battery + or from + and - from battery.
thanks for your video. In my case is the first time I've conected, and it was ok. but on the software i changed something on the maximo voltage and it loked the bms. I've tried all yours steps, but nothing. one cell is full charged. it can be my problem? if descharge battery you thing the BMS can turns on again?
Hey, maybe you can help. I got 2x 13s heyo 60a bms for LiIon Cells here. I put them up correctly and studied the instruction very carefully. The bms outputs on a 47V charge just 36,xV. If i connect the charger it outputs 55V. The app shows sometimes the correct voltage, but in most cases its totally messed up and dont even read the cells (13s). If input the charger on it just charges from 3,2v per cell to 3,6v and stops. The "beep test" between B- & P- does not work. I've added now an other cheap 60a bms without Bluetooth and the other "nice things" and this works instantly and without any Problems. The curious thing about it: The same strange things going on on both identical BMS's 🤷🏽♂️
Howdy! My 16.8V (4Series Lithium Ion) had a bad battery, it turned the bms off I suppose to prevent battery from shorting out..I replaced the cells, the power output + and - only reads 12V and the power drill wont turn on. Does that mean the BMS is dead? Or can you reset it somehow
Have you tried using 15ah battery @ 100ah bms.? Does it wake up ur sleeping bms?
Why does cables voltage doesn’t match actual voltage per cell?
This video was so helpfull Thank you very much! My BMS is working now. Im so happy 😁
Happy days, thank you for watching.
Great video
I'm currently struggling with my new set up 24v lifepo8s
Got it all assembled but read only 11v on the p- lead........
I'm pretty new at this... What would you suggest 🤔
Thanks
All the cell voltages good? I can only suggest what I say in my video. Plus if it is bluetooth there maybe a button on the dongle. That can wake the BMS up.
My BMS wouldn't work on fitting a new setup I tried the above with no luck pressed the little black button on the Bluetooth dongle and that fired the BMS in to action worth a try if all else fails 👍
Nice, thanks for the heads up and watching. A few people have commented with things they have found to work. Think I may redo the video and add these things for people. Another said the temperature sensor needs to be in.
One other thing you can do - If your BMS has a UNB monitoring cable (UART) then plug it into the BMS then your computer, the 5v from the USB can turn on the BMS.
@current connected, do you know if this works with daly? And also, do you need and program on the PC for the BMS?
@@martinmalm7254 Yes, specifically with the Daly. And you do need drivers and programs for programming on the PC
@@CurrentConnected , so I have connected the USB-UART cable to the PC and the other end to the BMS (UART-port). In the device manager I see "USB-SERIAL CH340 (COM7)" and the driver looks to be correctly installed. I then start the BMSMonitor-V1.2.8. In there I can configure the port (CommSet). I choose COM7 and click "Open Port" and the "CommSet" goes from Red => Green. But I still does not see any info of my battery. The BMS seemes to be turned off still. What more can I test?
Hi, On the bms I measure 9.79V and on the battery 13.2, how to do a factory reset, I can't access via bluetooth. Everything is well connected, the battery has been used for a couple of months, I have now used it to start the marine engine and I believe the bms is in over discharge mode or broken.
I have almost the same problem with mine. IF you get an answer that works please let me know. Thanks.
I can only get the bms to work if I put p- to the negative battery and the b- to the p- , need help, I did everything you said, it will not work when the b- is on the negative of the battery, do you think the bms is wired wrong?
I have a brand new battery the voltage across the main 12v terminals measure 2.6v ! How can this be possible ,the battery has Bluetooth but even that is not showing so I can not see the data , any ideas how a new battery can show such low volts any ideas
So I bought a lifepo4 battery, timeusb 220ah, if I apply a 12v charge to it, it will charge up, but the MOMENT I disconnect the charger, it shuts off. The batteries are good, it is the BMS and I have no clue what to do!
Please please please . I need some help.
Total novice to ebiking. I’ve just found out that my gvolt ebike battery 42v is only reading 27v. I’ve been watching a few videos about the BMS . It says on some videos that I can rest the BMS . Can you tell me if this is a good idea and if you think it would help fix my issue. The only thing I can tell you about my battery is what I’ve already said and that’s that it is only reading 27v instead of 42v . Ok folks thanks in advance for any help and input.
One battery have no power in 16s what happens
In my case bms not make output on negative terminal
Be careful testing continuity on a live circuit!! If you inadvertently touch the probe to the wrong lead you will be shorting out a cell or two thru your multimeter.safer to test continuity when the leads aren't hooked up to battery. Also, you should have a temp sensor malfunction that can open circuit your bms.
What if that step still not work ?
I have a 12S BMS that was working fine one night. charged my battery pack then the next day wasnt working. I checked the balancing cables. they read fine testing negative to every point until the final POS+ wire. the main pos(+) and neg(-) cable read 50.2v (same as - to + on balancing cables), but when the BMS is hooked up, the P- terminal and POS(+) only read 39v. 11v less than battery actual voltage. does this mean the BMS is fried or that its "sleeping?"
Hard to say without looking at it, do you have a battery cell that is peaking in high voltage? Yes, it looks like it is sleeping, when the voltage is lower than the battery voltage. I've noticed that..
Hello, I have a one-to-one situation. Did you manage to solve the problem somehow ?, I wrote to the seller, he is silent (
@@dusick1503 i purchased another BMS. i tried all the “tricks” to wake up a sleeping BMS but it never worked. the seller gave me the run around and constantly asked me to retest the same thing over and over. so i gave up with them and ordered from a different company
@@musicid93 did you open a dispute with the seller to get your money back? I've used this a few times, works well. Good protection for buyers.
Nice Video. 👍💪🏼
I have a question.
My Scooter-Battery = 72V (20S) Li-Ion with 25Ah. The scooter does nothing with this Battery. I measured 66.3V without any load. If i connect the battery to the charger, it dont begin to charge. The Charge- and Discharge wires are the same (Y-wired) If i set a little load on the Discharge-Pins, the Voltage goes from 66.3V to zero.
I dont think the Cells are deep discharged, because of 66.3V. But what is worse.
Do you have any ideas?
Regards from Germany
Juergen
66.3/20=3.315= dead batteries
could be also bad (weak, resistive) connections somewhere, i had similar issues
Hello 👋! I was wondering the name of your charger that you used to kickstart your bms? I touched the ground on my inverter while connecting to the bms and the battery wires to the back of the inverter it sparked the pliers so now they are not working. I got the inverter to work again and when I hooked it up to the battery and bms it chirp low voltage and goes off? Help is my battery toast?
I've done that sort of thing loads! I have just uploaded a video review on that charger. There is a link in the video description. The BMS may of cut out on high current. Your battery will be fine.
@@SolarPowerChannelwithChris is the bms rubbish now or can I use the techniques here to bring it back? Ps thanks for answering!👍🏼
@@SolarPowerChannelwithChris never mind I forced a charge into it then took it all apart and put it into a parallel let it sit overnight took it all apart make sure all the wires were connected good what do you know it works BMS and all ! Yeah!
@@littlemanoo that's good, sigh of release.
i wired my balance cables up wrong, i didn't know they needed to be in a certain order, did i kill my unit?
I did this once.. Just by mistake making a video not thinking. Yeah it popped it. I did not disconnect the balance cables while wiring up. Did not follow my own advice!Does it smell burnt?
@@SolarPowerChannelwithChris shiiiit. No it smells fine, but it's just not doing anyhting, even the Bluetooth module doesn't appear on any devices. The instructions are terrible and doesn't make any remarks about wiring in sequence. My 60a charger B2B is putting out 14.4V and my lifepo and 13.14 since I bought them. When I take a voltage reading between battery Pos and B- I get 9v
Its not putting out a charge at all.
Can not get mine going, 😐
Sorry to hear that, if you find a way to wake it up. Let me know.
Yellow tester is not accurate
I've found them to be accurate, also noticed some microelectronic people using them alongside their fluke multi meters.
continuity not conductivity in DMM term. You're making confusion