I have a 20s7p 30Q pack. Am at 250 cycles since 06/2017. I typically charge to 80.1V (95%). I'd say 90% of the 250 cycles were to 80.1V. I'd typically use around 12Ah per ride. I'd guess I could not get more than 15Ah out of this pack now. I also notice the voltage drop seems to be more severe. I'd say from a 80.1 charge if I draw ~40A it drops to say 70V but bounces back if I get of the throttle. So I think this pack will last me this summer but it's time to consider building a new one.
I'm looking at building a new pack with 21700 cells and am wondering if the 50E would be a good choice. My concern is the max 9.8A rating. I max draw around 65A for short periods so I'm wondering if the 50E may be rated too low. I really like the idea of having a 35Ah pack but wondering if the 50E will not last too many cycles if I'm pulling close to the 9.8A per cell. Maybe the 40T is a better choice but at 30A that's way more than I need.
Any comments or suggestions?
I'm looking at building a new pack with 21700 cells and am wondering if the 50E would be a good choice. My concern is the max 9.8A rating. I max draw around 65A for short periods so I'm wondering if the 50E may be rated too low. I really like the idea of having a 35Ah pack but wondering if the 50E will not last too many cycles if I'm pulling close to the 9.8A per cell. Maybe the 40T is a better choice but at 30A that's way more than I need.
Any comments or suggestions?