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RazrRebel
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# Posted: 30 Apr 2018 11:41am
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I have 4 Trojan 1275 batteries in my golf cart. I recently, last Sunday had a house fire. It was a total loss. My golf cart got melted up on the front a little. So I'm wanting to take the batteries to my cabin. Right now I have nothing but a 32" flat screen, DVD player, and a couple of led lamps. Also the occasional cell phone charger. The batteries are 12volts at 150 amp hours each. I have a Cobra 2575 inverter. All I should need to do is wire them up in parallel to maintain 12 volts, and end up with 600 amp hours of capacity right? I usually run a little Generac 1000 watt generator. To quiet things down, I was thinking of using the batteries, and inverter at night, and charge them during the day with the generator. Any thoughts? Doable?
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Steve_S
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# Posted: 30 Apr 2018 12:55pm
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Doable, sure, why not... Heck you could probably grab a couple of decent panels 300W and a little MPPT controller which would charge the lot during the day for you too.... Not talking about a big expensive Outback setup here... just the lower cost simpler stuff, even the EPSolar MPPT controllers.
These are still FLA for you can only take 20% from full charge otherwise your damaging the batteries the lower you drain them.
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FishHog
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# Posted: 30 Apr 2018 01:31pm
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I'm with Steve. Get a couple panels and enjoy life without the noisy generator most of the time.
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ICC
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# Posted: 30 Apr 2018 01:42pm - Edited by: ICC
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I am not familiar with that generator so I have to ask if you intend to run the genny to power a good battery charger that then charges the batteries or if the genny has a 12 VDC output and you intend to charge with that. (many small inverter gennys do have a 12VDC outlet) As those 12 VDC outputs are usually quite a low amperage they are not the best thing for charging batteries on a regular basis. A separate charger that can do a bulk and a absorb charge at the least would save gasoline. Even then it genny can likely only put out 800 watts continuous so that won't power a very big charger.
PV panels are the way to go but with the home a loss there may be better things to spend money on. Was there insurance at least? Hope so.
You can draw more than 20% from them. Heck, in the golf cart they probably got taken down to 50% regularly. Sure they won't last as long but 50% can be done a lot. With a charger that could put out 50-60 amps or so I would run them down halfways then charge at least once a week or more often depending on use. (charging at 10% of rated total battery amp-hr capacity is usually the recommended maximum)
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