tsourorf
1 mW
- Joined
- Jan 29, 2016
- Messages
- 19
Hello everyone!
I have built a battery for my brother's bike and I have a problem I cannot figure out how to solve. First of all, I have built 3 identical 13S2P (48V) packs using very cheap Chinese re-wrapped 18650 batteries. They are supposed to hold 6Ah each, but I guess they will be more like between 1Ah and 2Ah. Anyway, the 3 identical packs I am connecting them again in parallel to give power to a 48V 500W controller and motor.
All the individual cells have integrated protection board, so I thought I didn't have to use a BMS. Now, whenever I connect them to the charger (Before even plugging the charger to AC), the charger's fuse gets blown (10A fuse).
Does anyone have any ideas on this? What have I done wrong here? Do I need a diode or something for the connection to the charger so as to only let current in and not out? In each pack, I have one plug connected to the two poles of the 13S2P. I have tried the batteries on the bike motor and they give power just fine! It's only that I cannot get power in them now that bothers me.
I feel I have done something stupid but I don't know what! Please don't judge too harshly!
I have built a battery for my brother's bike and I have a problem I cannot figure out how to solve. First of all, I have built 3 identical 13S2P (48V) packs using very cheap Chinese re-wrapped 18650 batteries. They are supposed to hold 6Ah each, but I guess they will be more like between 1Ah and 2Ah. Anyway, the 3 identical packs I am connecting them again in parallel to give power to a 48V 500W controller and motor.
All the individual cells have integrated protection board, so I thought I didn't have to use a BMS. Now, whenever I connect them to the charger (Before even plugging the charger to AC), the charger's fuse gets blown (10A fuse).
Does anyone have any ideas on this? What have I done wrong here? Do I need a diode or something for the connection to the charger so as to only let current in and not out? In each pack, I have one plug connected to the two poles of the 13S2P. I have tried the batteries on the bike motor and they give power just fine! It's only that I cannot get power in them now that bothers me.
I feel I have done something stupid but I don't know what! Please don't judge too harshly!