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Low voltage when starting

18K views 55 replies 9 participants last post by  CraptorMan 
#1 ·
Hello everyone i have a question, my battery is 13.1V at full charge AND IT IS BRAND NEW. but when i try to start my atv, it dropped at 4V and it's turning too slow to start. When i stop it come back to 13v... When i boost my battery everything is starting fine. While it is running my battery is at 14.2v. I changed my starter cause i thought it was bad but it changed nothing... my charging system seems to be in good shape seen that it is going up at 14.2V while running... Even if I charge my battery all night long and it is new it's doing the same thing all the time...Someone can help me please? Thanks in advance
 
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