>=20
> On Jul 16, 2012, at 1:26 PM, mail@crcomp.net wrote:
>=20
> The controller of my old Rain Bird sprinkler system uses a 9V NiCad
> battery for backup in case of power outages.
>=20
> Is it possible to replace a NiCad with a 9V1 advanced Lithium?
>=20
> TIA.

It is likely that your Rain Bird has some kind of circuit to charge the NiC=
ad battery.  This charge circuit will NOT be compatible with a lithium batt=
ery. The simplest thing to do is replace the NiCad with another NiCad.  Oth=
erwise , you likely will destroy a lithium replacement ( and more stuff as =
well ).  You can modify the circuitry to support lithium batteries .... tha=
t is not trivial.
Best   Gus
--=20
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist
.