Belkin F6C1500-TW-RK discharged new batteries, won't recharge
Belkin F6C1500-TW-RK. Replaced batteries for first time in 4 year old UPS. Batteries were new, 12.5V via multimeter before installation. Turned unit on, monitoring software indicated 24.5V and 82% capacity. Left plugged in overnight with no load, capacity dropped to 70%. Decided to use anyway (needed the outlets!), now dead after two days. Multimeter reads 3.5V and 1.5V; batteries obviously not charging. Measure only minimal current and voltage directly from internal UPS leads (red and black wires) with batteries disconnected, but of course can't actually turn the unit on this way (current even drops slowly when I press and hold the power button). Any suggestions for further check or repair, including disassembly? Any way to rule out defective batteries? I have no other means to charge.
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1. Are you using correct gauge of wire for batteries (Specification mentioned in the manual)
2. You need to charge your batteries at least for 8 hours (as recommended by Mercury)
3. Please place your Inverter in a cool environment (20 to 30 C)
4. Nominal voltage of battery should be 12Volt if using 1x Battery.
If your UPS is not holding Charges, this means that the Battery does
not carry the load when AC fails. Check to see that the batteries are
okay by testing the individual batteries on load using a potentiometer
load with multimeter. If the battery voltage drops below 10V replace
the batteries and your UPS be okay
I think your issue is that the unit is overloaded. Try this...unplug a couple of items to get the load lower...then pull the plug from the wall...did it keep those few units running while disconnected...if not then the unit could still be overloaded...unplug everything but a small electric radio...do the same thing to see if it will keep the radio playing. If this doesnt work, go by your nearest batteriesplus store and they can help. www.batteriesplus.com