andrevh Posted February 3, 2017 Share Posted February 3, 2017 I am testing a Omni Powe 12V 260Ah battery. C100 = 260AH and C10=200AH On a inverter using avg 375W for an hour an 25 minutes before the inverter cut of on 11V. What is the condition of the battery and how long should it last? Quote Link to comment Share on other sites More sharing options...
PaulF007 Posted February 3, 2017 Share Posted February 3, 2017 375w / 12v = 31a @ 1h and 1/4 = 38 ah used from the batts. It sort off implies (Assumed) that you have used 15% of the capacity of the battery assuming that it was charged full. The fact the it has dropped to 11v under load does not sound to good for the battery life and some one just now is going to sy you must get the battery tested to check if it is still ok. In theory if you draw 15% you should get some good life out of your batts. Quote Link to comment Share on other sites More sharing options...
Guest Posted February 3, 2017 Share Posted February 3, 2017 On 2/3/2017 at 8:57 AM, andrevh said: What is the condition of the battery and how long should it last? Was the battery fully charged? If it was, sounds very suspicious for the volts to drop that fast. So ja, have it tested. Quote Link to comment Share on other sites More sharing options...
SilverNodashi Posted February 6, 2017 Share Posted February 6, 2017 It does sound like the battery's life is depleted to some degree. Quote Link to comment Share on other sites More sharing options...
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