T&T: 24V backup charger...

[Dave Cooper]

Jeffery, we use a couple of the small Guest 12/24 volt chargers. They have
two 12 volt outputs for charging two 12 volt batteries OR can be series to
charge 1 24 volt bank. They are cheap and seem to work well we have one on
our 24 volt start batteries for the past 5 years without any issue. It is
the ONLY source of charging the start bank. Cost was less than $100 if I
recall.

There are other small chargers that can do this but the Guest ones seem to
be well made, reliable and at a good price point.

Hope this help

Dave & Nancy
Swan Song
Roughwater 58
Limin in La Paz