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Bms for 17s and 200 amps

Tailele

New Member
Joined
Dec 3, 2020
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6
Good morning boys , i m a new user. In this period i m trying to contsruct a new battery with a new bms. My purpose is to built a 17s 9p with 21700 cells ( samsung 40t ). Now i would have 200 amps for continuous discharge ( 100 amps for channel , infact i have 2 channels ). i'm in trouble with the choise of the bms.
In your opinion which bms is best between:
- LLt power SP4S005-100-1-1-1 with the specs that i attach:
- Daly 17s 200A with this specs:
NameItemSpec
Power balancingPower balancing2.65V
Balance release volt2.65V
Balance current40±5mA
Over discharge protection Over discharge detect volt2.8±0.05V
Over discharge detect delay0.5V
Over discharge volt release3.0±0.05V
Over current protectionOver current detect volt150mV
Over current detect delay9MS
Over current protection Can be customized
Over current protect releaseDisconnect load
Short circuit protectionShort circuit protection External load short circuit
Short circuit detect delay250uS
Short circuit detect releaseDisconnect load
Temperature protection Can be customized
Resistance Main circuit resistor≤10mΩ
Self-consumptionWorking current≤100uA
Sleepy current
(when battery is over discharged )
≤20uA
Working tempTemp range-20/+80ºC

If you have another idea..
Thanks a lot
 

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I ll use this battery for a e-bike with One 3kw motor and 1.6kw motor.
 
17S is very atypical for 3.7V cells, but that might be normal for an e-bike. 62.9V nominal, 71.4V peak charge, 51V end of discharge.

Are these cells new from a reputable source? Have you tested them for capacity and internal resistance?
 
Yes i buyed this cells on nkon, so i don t have any doubt that are Samsung original with 4 amps
 
Provided you get a BMS with suitable voltage ranges, I don't see that either you show is better than the other.
 
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