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Does the UPS protects the car battery from over charging?
Make your computer UPS last for hours instead of minutes
FIRST unplug devices, then the UPS.Do NOT run the UPS unearthed. Make sure the socket you are plugging the UPS on is properly earthed.
Nice instructable, but in the statement "P / V = I 500 watts / 120 volts = 4.16 ampere hours (at 120 volts)" you're actually solving for Amps, *not* amp-hours. The two are *extremely* different -- Ampere is the unit of electrical current flow and Amp-hours is a measure of battery capacity. This may seem like a picky detail to some, but getting your units wrong can mean the difference between something working well vs having it catch on fire/blow up.
I have an APC 650 VA 410W Max UPS the battery is a 12V 12Ah. The output of the charger is 12 V 11Ah. I also have an EverStart power sport battery ES-T16L and there are no indications of the output except it is 12 volt. I want to use this battery for the UPS. The battery is sold by Walmart and made by Johnson Controls Battery Group, INC. , Milwaukee, Wisconsin. Do you think this is feasible?
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