Wanting to build my first diy battery. My goal is a light 14s2p configuration in a saddle bag for smaller rides. My bike is fitted with a bafang bbs02b 48V 750W (newest version). The controller is rated at 25 amps I have two cells in scope:
LG INR21700-M50LT 4890mAh - 14.4A discharge
Samsung INR21700-40T (40T3) 4000mAh - 35A discharge
Price is about the same, only 0,5 euros difference per cell. LG is nice because of capacity (pack will be almost 10Ah) and would be ideal in a 3 or 4p config, but I'm not sure if I'm pushing it with the controller amps being so close to the max draw on the cells in this 2p config. Samsung cells are well proven in 2p configuration and the packs 70A max draw will be well within my needs, but capacity is 2aH less. What cell would you go with?
Also, is it enough to go with a 30A bms or should I go for 40A (only for Samsung cells)?
Thank you, let's go cycling
LG INR21700-M50LT 4890mAh - 14.4A discharge
Samsung INR21700-40T (40T3) 4000mAh - 35A discharge
Price is about the same, only 0,5 euros difference per cell. LG is nice because of capacity (pack will be almost 10Ah) and would be ideal in a 3 or 4p config, but I'm not sure if I'm pushing it with the controller amps being so close to the max draw on the cells in this 2p config. Samsung cells are well proven in 2p configuration and the packs 70A max draw will be well within my needs, but capacity is 2aH less. What cell would you go with?
Also, is it enough to go with a 30A bms or should I go for 40A (only for Samsung cells)?
Thank you, let's go cycling