3/28/2023 0 Comments Ups with dc output factory![]() ![]() Though I suggest a camping unit because many of them are 12V. a 650watt camping/caravaning inverter and a car battery/ or a deep cycle battery of say 65Ah or a pair of batteries if your inverter of choice is 24V instead of 12V. For a load shedding TV power solution you'd be best off getting a dedicated inverter, e.g. ![]() The UPS would be able to charge an 18Ah battery, time would be the limiting factor mostly since chargers don't have a high output (you've probably seen that they have fairly thin wires). UPS internal inverters are sadly rather inefficient and waste a lot of energy compared to dedicated inverters, the reason being that a UPS is designed to run for 15 to 20 minutes for a computer user to save their work and shut down, or for the generator to kick in and power the building. ![]() Your UPS is probably equipped with a 9Ah (or maybe 7Ah) battery as standard, so an 18Ah is only double the capacity/ runtime. An 18Ah battery is probably not going to give you much of a lifespan unfortunately. Mid upper range gaming PCs pull just over 200Watt under load - based on my Core i7, 32GB RAM, 7x 3TB HDDs, GTX2060 Super - it pulls around 212Watt playing 2021/2022 games at 4K. Fairly similar to an office PC & monitor. (yeah, I know there's inefficiencies in the UPS, but lets keep math Your 430watt UPS is theoretically capable of powering your TV since the TV is probably less than 100Watt. So, assuming 12 volts, that means that, after adjusting for the voltage differences, I need a battery with at least 41.6 ampere hours. Check yours out first to make sure you won't need two car batteries. that means: P / V = I 500 watts / 120 volts = 4.16 ampere hours (at 120 volts) UPS batteries are usually 12 volts, but some are wired with two batteries in series. So I now knew I needed 500 watts, and I wanted 60 minutes of power. They can't handle being run for longer than a few minutes at this rating, but the batteries die before it's a problem normally. CAUTION: I discovered the hard way after nearly starting a fire and destroying a UPS that you need one that is rated at at least twice the wattage you are consuming. Even though the two monitors were hooked up to the same computer, I needed to distribute my power load more evenly to get longer battery life out of my petty UPS's. Find the WATT rating) with one computer and one monitor on each. (yikes!) Currently I was running on two 300 watt UPS's (NOTE: VA is not equal to WATTS. My total power consumption was roughly 500 watts peak. ![]() I was trying to power two computers (desktop and file server), and two flat panel monitors. Wire crimp terminals that will fit over the threaded rod. Wing nuts the same size as this threaded rod Wire (12 awg or larger two different colors)Īdapters to go from the car battery terminals to threaded rod. UPS that is rated at least double what you plan to draw (see step 8 to understand why). I needed more power! My solution: Car batteries. I wanted my UPS to be able to last for at least 60 minutes in a power outage. Well, shortly after, the power went out for longer than the battery could keep my computer afloat. After getting frustrated when the power flickered one day, I immediately went out and purchased a UPS. For what would appear common sense to me, but perhaps not to all, I have all of my computers on UPS battery backups. ![]()
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