>Yes it is possible; with very great care.
>
>Be absolutely sure you know the polarity of the charging vehicle battery and
>the 24V pair. Ensure the 24V vehicle is all off and preferably by an main
>breaker or isolator.
>
>Double check that there is no chassis contact between the two vehicles and
>just charge each 12V battery in the 24V vehicle in turn individually in the
>regular way + to + and - to - , do not ever, even if flat, put the 24V
>system directly across the 12V vehicle.
Attention, caution!
If you do so, you get the nicest shortcut! You must remove the connecting
cable between the two batteries in the 24V vehicle!
If you don't do that, the + of the batterie, which has its - on ground, is
connected with the - of the batterie, which has its + to the + of the
generator/alternator. If you don't break this connection between the
two batteries you'll get a nice shortcut, because + and - are connected!
Don't do that, it can seriously damage your health!
Regards
Andreas
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