New battery technology

[mike killay]

?

 

[mike killay]

Autotroll on the prowl?

 

[haase]

Hi everyone,
I am new to the forum and ebikes but keen to get going asap. I looked at all available battery choices and NMC is really attractive. Best power to weight ratio of any battery. Hence I contacted a NMC pouch cell manufacturer and ordered a 24V 20Ah battery pack with BMS and a charger 24V 20A. Expecting the arrival in the next 5-7 days. The battery pack configuration is 7S1P 24V 20Ah.

The cell specifications are:
Typical capacity: 20Ah
Nominal Voltage: 3.7V
Full Charge: 4.2V
Discharge cut off: 3.0V
Charging Current: Standard: 2A
Max: 20A
Discharging Current: Standard: 2A
Max: 50A
Internal Resistance: <= 5MOhm
Weight: 450-460g


If anyone has used NMC batteries, I'd be interested to learn from them what to look out for. I understand the same chemistry in these cells is used in the Tesla ev sports car. I thought if it's good enough for Tesla, it is good enough for me. Nissan also apparently chose this chemistry. They can't be all wrong. Can they?

Thank you in advance.

 

[Deleted member 4366]

NMC is now used in most ebike batteries. There's lots of derivatives of it too. It's a shame you didn't tell us before you ordered. There's probably a lot of better batteries than what you've ordered. A 36v or 48v one would probably be better