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profdant139's avatar
profdant139
Explorer II
Nov 01, 2016

How to test working capacity of battery: not technical

(If you are a highly sophisticated technical battery expert, I advise you to stop reading. This post is designed for people like me, who are not experts.) I have two group 31 12V marine deep cycle...
BFL13's avatar
BFL13
Explorer II
Nov 01, 2016
When you use an inverter and a 120v appliance such as the 60w bulb he used, the inverter will draw more amps as time goes on as the battery voltage falls. Called "inverter creep" as it tries to maintain output voltage.

DC lamps dim when battery voltage falls so they draw fewer amps as time goes on.

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