How To Tell Amp Hours On A Battery. Batterycapacityexplained whatisbatterycapacity whatisamphour whatiskilowattho. For example batteries rated in ampere-hours AH also called amp hours are designed to deliver low currents for an extended period.
Now a 400 watt inverter draws slightly more than 400 watts from the battery. If its not fully charged hook it to a battery charger until it is charged. When looking at amp hours the listing should specify the span of hours.
What the heck is an amp hour and why are there so many sizes of batteries.
For instance a battery with a 10 Ah rating will last twice as long as a battery with a 5 Ah rating when used under similar conditions but it does not mean that it will actually last 10 full hours. A 200 amp-hour golf cart battery might need a few days to fully charge that way. For instance a battery with a 10 Ah rating will last twice as long as a battery with a 5 Ah rating when used under similar conditions but it does not mean that it will actually last 10 full hours. You cant tell anything for sure about a battery until its charged.
