Tazman
100 mW
Hi all. I wonder if someone could tell me if i upped my AH on my battery from 52v 17.5Ah to 52v 20AH would it cause an issue to the display, controller or the 1000w motor.
Thanks for time.
Thanks for time.
Upgrade of Darado battery
- Thread starter Tazman
- Start date
lnanek
10 kW
Higher Ah capacity doesn't matter re compatibility. You would need to check the new battery can sustain the same max A discharge, however. Otherwise the BMS may shut off the pack when you go full throttle.
Tazman
100 mW
Thank you. How would i check new battery?
Look at the specs of you current battery. It’s usually on the label.
If you were upgrading to this one (20Ah), it states 30A BMS. It also states the maximum constant discharge current as 30A.
If you were upgrading to this one (17.5Ah), it also states 30A BMS and a maximum constant discharge current as 30A. In reality both were constructed with the same model cells, the 20Ah pack would have a higher dispatch rating.
If the BMS rating is all you have to go on, then use that, but the continuous discharge rating, if accurate, is a better measure. The best way to determine the actual continuous discharge is by identifying the cells the pack is comprised of. A good pack maker usually will rate the pack, and size the BMS conservatively, anticipating degradation of the pack over time. They will use a BMS that reflects that. A shady vendor will oversized the BMS relative to the actual capability, even when new. They leave out the continuous discharge rating, rather than lying about it.
So, the best way to know the packs capability is to find out the cells used, followed by comparing the continuous discharge rating, and then the BMS rating. Eliminate vendors that don’t provide specs, or have specs that don’t add up in their listings.
Tazman
100 mW
Thank you very much for that detailed read E-HP
Tazman
100 mW
Its a 52v i am looking for in the U.K
