I have two sla battery sets, both are 36v 7amp. The first set is set up in an ebike le battery box with the built in charger, the battery consisits of 6 (6v-7ah, setup in parrallel and serial to get 36v 7ah) and at this moment it only charges up to 4amp.
My second sla battery set is in a battery bag of 3 (12-7ah, setup in serial to get 36v 7ah) and this one I'm using an inline charger and I get the full charge every time of 7amp.
I tried switching chargers on the battery box to see if that would give me a full charge and still only get 4amp charge.
What can I do to get the maximum charge of the 6v-7ah battery box set.
I read some searches related to VR1 & VR2 related to chargers will that help and can someone explain about its fuction.
Thanks for your assistance in advance.