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1) The XANTREX model 6048 requires a DC battery operating voltage from 44VDC to 64 VDC. Ideally, this inverter requires 48 volt DC batteries or a combination of battery strings to provide the 48 volts. The inverter will not work using 24 volt batteries unless two of them are wired in series. A quantity of twelve 2 volt batteries is not enough as you need another 12 batteries.
2) Using 2 volt batteries would require a quantity of (24) twenty four 2 volt batteries wired in series to comprise the 48 volt DC battery output. 2 x 24 = 48 volts.
3) Since the required voltage is 48 volts, I recommend to either install (4) four 12 VDC batteries in series or (2) two 24 volt batteries in series or (1) one 48 volt battery. I recommend installing either (1) one 48 volt battery or (2) two 24 volt batteries if you want to add to the existing battery strings.
4) I do not recommend using the 2 volt batteries as those are too many batteries to wire in a series string as well as future battery maintenance. 24 batteries will also take up much more real estate room.
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