Im charging a AA rechargeable battery using a solar panel, After charging the battery drains very quickly why?

Question

Im charging a AA rechargeable battery using a solar panel, After charging the battery drains very quickly why?

Answer 1

87% of the charge is not very much. A good 12V battery will actually read 14V when charged, and stay at that level for a long time. By the time it shows 10V or so, it's probably almost 80% drained.

Answer 2

rechargeable AA baterys don't realy last that long and if u dont fully discharge b4 fully charging u can shorten the amount of life the battery has even more

Answer 3

1

Answer 4

Very simply, sure. But a rechargeable AA telephone desires about 1.Four - 1.6 volts to cost it, and industrial sunlight panels produce distinct voltages. In case you put the sunlight panel you will have in the solar, you can measure the voltage with a volt meter to see whether it is in the correct range. Whether it is, and the panel is just not very massive, you should now not have got to worry an excessive amount of about overcharging the battery. If the sunlight panel is much bigger than 1.6, you will be capable to cost a number of AA cells in series. In the event you had, say, 6 volts, you would cost 4 AA batteries in series. However as one other respondent recounted, placing a diode in the circuit is pretty foremost, on the grounds that or else the battery will drain into the sunlight panel when there is not sufficient mild.

Answer 5

I have never had a rechargeable battery last long- no matter HOW it was recharged.

Answer 6

Two thoughts, which may or may not be right.



The panel may not be putting out as much power as you think. Most likely, the panel is just out there in one orientation, not following the sun. If it's just basically the panel wired directly to the battery, then I suspect the charging current is actually quite small. You could verify this by connecting an ammeter in place of the battery.



My second thought is that whatever is indicating the state of charge on the battery is not at all accurate.

Answer 7

The battery is clearly not getting fully charged. You need a charge controller with your solar panel to properly control the flow of electricity. And the solar panel must put out more voltage than the fully charged battery does or else it will never fully charge the battery even with the charge controller. So you need to know more than just how many watts the solar panel can make, you need to know it's voltage. And keep in mind that the 2.4W rating is no doubt the maximum you can get under ideal conditions. If you don't keep moving the panel to point exactly at the Sun all the time you will loose some power. This requires turning the panel slowly all day to follow the Sun. Just setting out in the sun and walking away for 6 hours will result is less than 2.4W most of the time.