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370 Posts
Always seems I'm asking more than I'm helping..
With a Fluke meter across my Battery Pack to the trucks ground, I'm reading some voltage. I have 46 Thundersky 160 AH. Measuring from ground to the 40th battery, I get very little voltage, but measuring at battery 41-46, the voltage increases, and measuring to the negative side, I'm getting about 150 volts.
But here's the weird part... disconnecting the BMS wires and battery voltage display wires, I'm still getting this voltage centered at battery 40!
My BMS system took a hit and burnt a board because of the short, so the pack needs to be fixed, but this makes no sense. Cables have been checked and possible shorts to ground have been taken care of, but I still get this weird voltage differential at battery 40.
Any ideas?
With a Fluke meter across my Battery Pack to the trucks ground, I'm reading some voltage. I have 46 Thundersky 160 AH. Measuring from ground to the 40th battery, I get very little voltage, but measuring at battery 41-46, the voltage increases, and measuring to the negative side, I'm getting about 150 volts.
But here's the weird part... disconnecting the BMS wires and battery voltage display wires, I'm still getting this voltage centered at battery 40!
My BMS system took a hit and burnt a board because of the short, so the pack needs to be fixed, but this makes no sense. Cables have been checked and possible shorts to ground have been taken care of, but I still get this weird voltage differential at battery 40.
Any ideas?