Lee 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?
Thanks.
I got the "60W" from where the 120v power cord enters the powered speaker... there is a label that says something like "120v / 60w"