Aa Battery Capacity Tester

Rechargeable batteries in the aa size are available in multiple chemistries.

Aa battery capacity tester.

Evidently for high current applications the rechargeable battery is a much better choice both for amp hours and for keeping the voltage high during discharge. Universal battery checker tester with leads lcd display battery capacity voltage resistance tester for aaa aa c d 9v digital 12v 3 7v li ion 18650 cr123a cr2032 button cell batteries more 4 5 out of 5 stars 176. Product width 1 in. With a microcontroller like the good old avr chip we can make a rechargeable battery tester that does the work for us.

My tester puts aa batteries through a discharge test and reports the capacity in milliamp hours mah so you can compare battery capacity. Product length 1 in. Then you can subject it to a voltage test to see whether or not it accepted and stored the charge from the charging operation. Aa aaa c d and 9v batteries battery type silver oxide battery s included y n yes battery s required one sr44 dc volts 0 7 1 5 operating voltage range 0 7 1 5 product height 3 1 2 in.

If you have a voltmeter or a multimeter it is possible to see if a aa or aaa battery can still accept charge up to its maximum capacity. Universal battery checker tester with leads lcd display battery capacity voltage resistance tester for aaa aa c d 9v digital 12v 3 7v li ion 18650 cr123a cr2032 button cell batteries more 4 5 out of 5 stars 182. Universal battery checker tester with leads lcd display battery capacity voltage resistance tester for aaa aa c d 9v digital 12v 3 7v li ion 18650 cr123a cr2032 button cell batteries more 4 5 out of 5 stars 138. I still use the disposable because of the convenience but both for total cost and number of pictures between battery change out there is a good reason to use these rechargeable cells.

To do this you have to make sure that the battery is charged. Nickel cadmium nicd with a capacity of roughly 600 1000 mah nickel metal hydride nimh in various capacities of 600 2750 mah and lithium ion.