Charge gel cell with car charger?
On Mon, 25 Feb 2013 07:56:18 +1000, Tim Wescott
wrote:
On Sun, 24 Feb 2013 00:06:18 -0800, Mike Cook wrote:
A friend has a battery powered Ryobi lawn trimmer ("weed whacker") which
doesn't work. The 12vdc wall wart puts out only ~ 12.4v.
I charged the lead-acid gel cell using a car charger. The charge rate
(selectable) was 0.5A. Afterward the trimmer seemed to work as new.
Can the car charger be used to charge this battery? He can install a
timer to limit charge time if that's something required.
Thanks.
Go to a boat shop, feed store, hardware store, whatever, and get a float
charger.
Get a gel-cell float charger. The recommended terminal charging voltage
for a gel-cell is slightly lower than for a standard lead acid.
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