L
Lee
Guest
On Tue, 1 Jul 2003 06:37:34 +0000 (UTC), Ian Stirling
<root@mauve.demon.co.uk> wrote:
I got the "60W" from where the 120v power cord enters the powered
speaker... there is a label that says something like "120v / 60w"
<root@mauve.demon.co.uk> wrote:
Thanks.Lee <no@spam.invalid> wrote:
I have a 60 watt load (120v) that I want to power using a 12v
inverter.
Can someone tell me what Amp-hour battery I would need to power the
load for 2 hours?
60 watts / 12 V = 5A.
I need to keep the batter size/cost down and don't want a lot of extra
capacity.
5A*2h = 10Ah.
*1.5 (inefficiancies) = 15Ah.
The load is a set of powered speakers for PA use.
Thanks.
The load from the speakers is very unlikely to be a constant 60W.
The load (and hence life) will vary significantly depending on
what you'r using them for.
Where are you getting the "60W" from?
I got the "60W" from where the 120v power cord enters the powered
speaker... there is a label that says something like "120v / 60w"