Question about Haier HLT71 7 in. Portable TV

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For use during an extended power outage, where of course you wouldn't be able to recharge the battery after it drained initially, I'm wondering if anyone has tried using a 12 volt lead acid rechargeable battery? These are like miniature car batteries, and I'm thinking all you would need is to rig a cable with the correct power tip to the TV on one end and two leads for connecting to the two +/- terminals of the battery. The only question might be the current requirments, but I don't think that would be an issue...the other fascinating thing, would be to see just how long this would power the TV...as we all have experienced, power outages can sometimes go on for days! Someday, a company is going to come up with LONG term battery power..but until then , the 12 volt rechargeable lead acid battery (which you can get from Radio Shack) MAY be an option...

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You simply need a DC - AC Inverter, these can be obtained from somewhere like Radio Shack, or the like, pretty cheaply. These convert 12V DC into 115/120V AC (Some are 24V - 115/120 V) for use with your household appliances. You can get them from 100 Watts to over 1 kilowatt (!000 Watts) They can be used on almost anything at all, except things with big motors in them. Then you can simply plug the AC adapter into the inverter and you are good to go. not having to worry if your laptop is getting correct power.
Often the DC input into a laptop is between 14 Volts DC to 22 Volts DC and a high current too, up to 5 Amps. So the inverter is your best option.
Anyway you would need to use at least TWO 12 Volt batteries and then you would have to make it the exact voltage the laptop needed.. if it was say 19V then you are still going to have to find a way to drop the 24 V to 19 V, anyway so.....

Posted on Feb 03, 2010

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Advanced Battery Management Technology Prevents Premature Failure and Significantly Extends Battery Service Life
Batteries are the most critical component in the reliability of any UPS, but they face three fundamental challenges: All Batteries Need Charging
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chart_abm.jpg
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