After melting down the BMS in a Soco battery AGAIN, instead of buying another of the same BMS, I opted for a 3rd-party board that's rated for more current than the original.Â
Its bought from YYBMS.com via AliExpress for just under $100US. The connectors are different from the original, so I had to do some detective work before plugging it in. The form factor is ALMOST identical to the original BMS, but some components prevent it from sliding into place; I had to clip off bits of plastic from the battery rack.
anyway, if you're good with electronics, this seems like a better and cheaper alternative to simply replacing a burned-out BMS.
After melting down the BMS in a Soco battery AGAIN, instead of buying another of the same BMS, I opted for a 3rd-party board that's rated for more current than the original.Â
Its bought from YYBMS.com via AliExpress for just under $100US. The connectors are different from the original, so I had to do some detective work before plugging it in. The form factor is ALMOST identical to the original BMS, but some components prevent it from sliding into place; I had to clip off bits of plastic from the battery rack.
anyway, if you're good with electronics, this seems like a better and cheaper alternative to simply replacing a burned-out BMS.
Why I can't see your pictures?
Thank you for sharing! Next week I will receive my TC and the first thing is to expand the battery pack, after reading your post I might also change the BMS whilst I'm at it.
How did you burn out the original BMS (hot weather, going up steep hills, etc)?
@bvzijverden May I suggest being very cautious about deciding to open the battery. It very dangerous. Touch the wrong two things, and POP. A chunk of your finger vaporized. 😱
How I killed my BMSs:
- Overheating
- Overheating and fire
- Accidental short (vaporized the ends of my wire cutters!)
- Mystery failure
Isnt it interesting how the Soco BMS is so unreliable that now there are multiple shops selling replacements specifically for the TS/TC? 🙄
@cubeyterra the battery of the TC/TS is indeed powerful to require some expertise in batteries because it can get pretty dangerous, pretty quick like you mentioned.Luckily I'd consider myself more than adequate to make my own pack but I was just curious as to why you had blown out various BMS' already.
I concur that its not a coincidence that there are 3rd party BMS' available that are specifically designed for the TC/TS.. the original ones are obviously not of the highest quality.
Anyway, thank you for clarifying the reasons behind the failures, I'm very curious what the mystery failure could be haha.
Take care.
Bob
@cubeyterra Hello, I have a super soco ts. with original battery. I have not modified it, but I am looking for a way to give it a little more power mainly for the climbs.
currently it climbs at a speed of 15 to 18 MPH and if there are no hills it reaches 40 MPH. Among what I was able to investigate, I found that the limitation is given by the BMS in the battery rather than by the motor controller. I understand that this BMS only delivers 30A or 35A maximum.
Now I see that the BMS that you put in your battery is 50A. My specific question to you is, Did you notice a difference in power (not top speed). Well, if that's the case, I think you'd be helping the entire community enormously, because I think that for most of us that's our problem.
Thank You.
50A... so 3kW finally. Do you know what Voltage and Amperage engine can take? I heard is rated fo 10kWÂ
@m66Â
The engine won't like that amount of power, I am using a sabvoton controller which can spit out 150A continues, i tried it on stock settings and the engine got very hot on a short run, so i had to reduce the operating current.
Â
@arjan_1980 hmm... putting ferrofuid coolant inside may help... still it's pisses me off... they say 3kW and we received 1,8 kW peak
Hello there, I am currently putting the exact same BMS in a 72V TCMax battery. I have it open and everything is going fine, except there are more wires on the stock BMS than 3rd party.
As you have already installed one, would it be too much to ask you to post a wiring diagram or something to help me out.
It would be appreciated immensely.
Matthew
@imtwisted If youve got the same BMS shown at the top then that will probably not work for your battery
The BMS picture above is designed for the TC battery which is 60v compared to your 72V TC Max battery so has less cells in series so needs less balance leads.
Not sure on the exact spec of the TC Max battery but the TC battery is 17s9p so has 17 cells in series and 9 in parallel, due to the higher voltage of the TC Max battery it will have more cells in series so needs a BMS that is compatible with more balance leeds.
