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.



--
Tim Wescott
Control system and signal processing consulting
www.wescottdesign.com