Quote:
Originally Posted by bmwf82m4
i think i screwed up....i put a regular battery tender on my lithium ion battery.... voltage is at 13.9 while car is on. seems a bit low
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Charging voltage should be max. 14 volt. The maximum voltage of the battery is 14.4 volt (3.6 volt per cell). If you measured 13.9 volt then it looks ok to me.