Lifepo 4 battery - 100 amp hr £140

[fishplug]

Ah! yes. Gotcha. Sorry, I misunderstood your question.

As Bigtwin pointed out those numbers are a bit odd.

Preferred minimum charging current: 60A

Maximum charging current: 300A

What they're saying is that the standard current you should charge the battery at is 20A (or 60A on the 300) and the maximum is 200A (or 600A on the 300).

By comparison, my 300Ah Fogstar Drift Pro puts the max charging current at 150A and the standard at 60A.
My 100Ah Li Time has a max charging of 100A and a standard of 20A

The standard charge current is typically 20-30% of the battery's capacity but charging them for long periods at a higher current can damage them. That's why a good BMS would definitely be limiting that higher charging capacity.

Sticking 600A into a battery that has a normal charge rate of 60A doesn't sound like a great idea to me. Again, I'm a long way from being an expert so I'm happy to learn from others if I've missed something.

 

[Raul]

Ah! yes. Gotcha. Sorry, I misunderstood your question.

As Bigtwin pointed out those numbers are a bit odd.



What they're saying is that the standard current you should charge the battery at is 20A (or 60A on the 300) and the maximum is 200A (or 600A on the 300).

By comparison, my 300Ah Fogstar Drift Pro puts the max charging current at 150A and the standard at 60A.
My 100Ah Li Time has a max charging of 100A and a standard of 20A

The standard charge current is typically 20-30% of the battery's capacity but charging them for long periods at a higher current can damage them. That's why a good BMS would definitely be limiting that higher charging capacity.

Sticking 600A into a battery that has a normal charge rate of 60A doesn't sound like a great idea to me. Again, I'm a long way from being an expert so I'm happy to learn from others if I've missed something.

Also, take in consideration BMS limitations, even if the drift battery is 300Ah, max may be limited by BMS as well at 150A. I guess if you stick a 300A bms on it, it may well be ok for up to 300A.

 

[fishplug]

As I said, my knowledge of them is slightly limited but I would have thought that if the battery ideal charge rate is 60A and that charging at high amps can reduce the battery lifespan then having a BMS that limits the charge rate to 150A is sensible.

I'm sure you could shove a 300A charge into it with a different BMS, but I'm not sure it would be a good idea!