On Sat, 30 Aug 2003 23:07:50 GMT, "Matthew and Wendy Plante"
wrote:

I am trying to build, or at least cobble together, a battery pack for a
receiver. I will only need one (1) amp of power. The battery will have a one
(1) amp fuse on both the lead in and out of the radio just for safety.

That might be a bit close, you might want a 1 1/2 amp fuse just to
allow for turn on surges.

What
I have not been able to understand is what amp hours are. I need a twelve
(12) volt battery that will last a while, or at least five hours, and be
rechargeable.

One thing you can do is to compute amp hours by saying: I need 3 amps
for 5 hours" That implies you need a 15 amp hour battery at least.

the good news is that a 20 amp hour battery would supply 1 amp for 20
hours...

I'd get a 10 amp hour battery at least, just because... I'd also go
with a gell cell because the will not leak and can be used in any
position. Gell cell chargers are easy enough to come by.

There was an article in 73 magazine about how to charge gell cells
that did a nice job of it.

Harvey



I have been looking at UPS battery pack, or even small car
batteries. Any help? Thanks.

Matthew
KC2KEI
Scars are the proof that man can survive his own stupidity.