On Sat, 29 Dec 2012 21:20:35 +0000, Rick Hughes wrote:

all good stuff guys .... but back to original Q ... anyone got a 3
stage charger circuit ?

Why bother, wander along to Aldi and pick up one of their 6/12 V battery
chargers for less than 15 squid...

Though ISTR some mention of SLA gell battery rather than a wet cell type.
These are rather more fussy about charging but these days I'd expect to
find a chip that does multi stage charging for SLA's. How else can you
buy one for a tenner?

--
Cheers
Dave.