Mobile Power Inverter
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What power source do I need to power a 13 watt CFL bulb?
I need a battery/inverter that can power a single light bulb for long periods of time, and is able to be recharged. Most of the ones I've found so far need to be plugged into a external battery. I think I've found a suitable one:
http://www.amazon.com/Xantrex-XPower-PowerSource-Mobile-852-0281/dp/tech-data/B000HVDCZM/ref=de_a_smtd
Yet, I have no idea how to assess how long it can power the light bulb.
I would prefer for it to last for 5 to 6 hours, and be able to charge in a normal 120 v wall outlet.
A few wrong answers.
A CFL bulb runs off of 120 VAC or 240 VAC depending on where you live.
The inverter you referenced is a 100w unit, much more than you need for 1 13 watt bulb. And it does require an external battery.
Your best bet is to search for a UPS, that includes the battery and the inverter in one package. And the battery charger, which you did not mention.
I'm having trouble finding a low power UPS.
Re your question about time, a 13 watt bulb for 6 hours is about 70 watt-hours. Call it 100 for losses.
A 30 amp hour battery (a smallish lead acid sealed battery) puts out about 300 watt-hours, so it is much more than you need. A 10 or 20 amp hour battery would be OK.
edit:
I found one UPS 500 watt unit for $110
http://www.buy.com/prod/cyberpower-cp850avrlcd-ups-intelligent-lcd-diagnostic-panel-series-9/q/loc/101/204822640.html
the lowest I could find. This one can run for 30 minutes at it's full load, so at your load, it will run for many hours.
i hope there is a cheaper 100 watt unit available somewhere, but I couldn't find it.
