UPG 250 amp hour agm batteries
I just finished up my residential refer install with inverter. I have two 75 amp hour batteries that will suffice for now. But this worked so great and I had so much fun with it, I started searching ...
Forum Discussion
MNtundraRet wrote:
Dave:
How many amps is the Residential Refer. drawing on a 1-hour duty cycle? Have you checked the amps being drawn from the battery-bank with a clamp-meter? They will be 10 times the 120v,ac draw when using 12v, dc.
I just purchased a new 1000 watt (2000 surge) inverter (10 year old 400 watt inverter just died) for my HD TV and 2nd amplifier (plus other temp. uses). The inverter does show "wattage" and "amps" under load, but "watt's" readout is inaccurate under 200 watts (per specs.). For the TV drawing less the 25 watts reading is zero. The reason I used the clamp-meter on the battery cable.
The reason I ask is that it looks like you expect to use the refer. 24/7 over a weekend, along with all other normal 12v needs. Using just two 75AH batteries does not seem doable, especially for having batteries hold up long-term.
P.S. I missed the comment about the generator, so you should be okay.
I would love to dump the RV refer. when they come out with energy efficient compressor refers. Many new units coming out with residential, but manufacturer's expect you be camped on an electric site, not boon-dogging.
I bought a killowatt from harbor freight (I think that's what it is called) My 10.3 cubic foot refer draws about 3 amps on start up and about 110 watts while running. So far I have only used a couple hundred watts over 10 hours at night. I love that little meter it is super handy shows total watts used as well as instant watt measurement. Shows your amp draw and voltage.
