got 3 12v batteries and need a 36v pack for my ebike, there 12ah batteries, thanks for the help :)
It's not a good idea. Batteries in series have to be perfectly matched or they'll go bad fast.
I have 3 12v batteries connected to each other to make 36v! READ MORE?
In sequence, yet be very careful charging them. can charge each and each independently using a high quality charger calibrated for the lead-acid chemistry, and additionally set to a slower can charge value than you ought to use for an unsealed battery. SLA is arguably no longer the final battery chemistry for transportation. i do no longer comprehend if absolutely everyone even manufactures deep-discharge SLA batteries. Lithium-ion is by skill of far the main wide-spread decision those days.
wire them in series. + [] - +[]- +[]- battery #1. connect the neg terminal to the pos terminal of battery #2. Battery #2 neg terminal to the pos terminal of battery #3. Connect the neg terminal of battery 3 to the negative side of the motor controller. Connect the pos terminal of battery 1 to the positive side of the motor controller.
