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What is causing the deep cycle battery charger fuses to pop?

Mobile Wheelchair battery wiring:

Two young 12v 26AH wired in ceries? is poping charger fuses. with newly accuired controller

The chair contoller has been newly doneup and could be the cause

Look at Mobile chair battery line diagram operating with newly acuired reconstructed second hand controller it pops charger fuses, the battery's are near new the, motors is not connected yet in fear of damage from a dead short somewhere.The motors operated fine whith previous controller.americantwintowers@gmail.com


Picture of What is causing the deep cycle battery charger fuses to pop?
Looks like the batteries are drawing more amperage from the charger then it is suppose to support. If you just replaced the controller than you need to double check you got the right one for the job.