Doin it right wrote in
:

Hydrocaps reduced my need to top up to about once every 6 months or so,
and much less water needed. It can be difficult to find distilled water
in some (more remote) places, so the added advantage of not having to
carry distilled water is also attractive.



If your battery banks are using water, you need to check your fully-charged
float voltage, not the battery vent caps. Back off .2V on your float
charger's top end setting and they'll stop overcharging. You shouldn't
have to top off the batteries more than once a year if the setting is
correct.

Everyone should be carrying distilled water....for drinking as well as
batteries....You'll live longer.

--
Larry