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#1
08-20-2015, 05:12 PM
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Only thing is to make sure you have a UPS rated at double the wattage you need. So when you hook up the car batteries the components can handle the extra heat.
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~ 210 Gallon mixed reef ~ 37 Gallon Mixed Reef ~ Herbie drains for life! 
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#2
08-20-2015, 06:44 PM
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Not sure of price comparison but coralbox has come out with a battery back up for jebao.
Coralbox Powercell: Sample Tests (Jebao RW Pump) Using lowest model W1 Function RW4 / WP10 48 Hours RW8 / WP25 24 Hours RW15 / WP40 18 Hours RW20 / WP60 9 Hours For use with Ecotech, Jebao MP, RW, & DC pumps
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#3
08-21-2015, 04:27 PM
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What CM125 said. When converting UPS to use larger external batteries, you need to be aware of the charging characteristics & capacity of the UPS circuitry. The switching circuit/relay & fusing of the whole shebang also needs to be looked at & modified. If you're not familiar with how that functions, you could be setting yourself up for a disaster. Personally I'm not a fan of trying to do this with something that's designed for a smaller capacity battery. My Dad had a small UPS for his computer years ago. When it stopped working I disassembled it & found the battery bulging at the sides. Could have blown & caused a fire or corrosive damage. I don't think UPS units available for home computer back up are particularly well built. Be careful.
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Mike 77g sumpless SW DIY 10 watt multi-chip LED build  http://www.canreef.com/vbulletin/showthread.php?t=82206
Last edited by mike31154; 08-21-2015 at 04:37 PM.
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