Steve,

You should really check the water more often. Losing so much
water can't be very good for the batteries. Not sure what the
particulars are for increasing the acid concentration of the
electrolyte. I'm sure someone will enlighten us.

Doug
s/v Callista

"Steve" wrote in message
...
I looked into the HydroCaps, from my battery wholesaler.

I seem to remember that the price was about $12 each. (4batt. X 3cells X
$12
= $144)

If the price wasn't enough to turn me off, the fact that these things are
about 3 inches tall, above the battery top.. I just didn't have the room
for
them since the batteries were already 17 inches tall.

BTW. I finally filled my batteries yesterday and it too a gallon of water
($.58/gal) and this was after one year in service with 3 months of heavy
use
this summer. A gallon may seem like a lot of water, but these batteries
(L-16) have a lot of volume above the plates. So it was about 11 oz. per
cell.

Steve
s/v Good Intentions