W3FPR - Don Wilhelm wrote:
Of course, an even better system is to use a 3 stage charge controller
specifically designed for SLA batteries - something like the A & A
Smartcharger would do a fantastic job.
Keep in mind that the Smartcharger (and most likely other 3-stage
chargers) has an adjustment for the amount of trickle current. If the
charger is designed for an automobile battery this will be too much for
a small gel cell and will destroy it.
How do I know? Because I have a Smartcharger and I made an error in
arithmetic when I selected the value of the resistor that controls the
trickle current, and the rest -- including my 4ah gel cell -- was history.
--
73,
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco
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