How can I test a Blackberry battery? I have a digital voltmeter and many resisters...

Question

Per a website, a Blackberry battery is 1.4AH. Rated a 3.7V at 3.6 hours of talk time, that makes the load 0.382Amps. The 20ohm resistor that I have makes half that current. After 3 minutes of load, the voltage dropped from 4.1V to 3.8V (still above the rated 3.7V). IS THIS GOOD???

Answer 1

You can check the voltage with the help of Voltmeter or with a multimeter. You can have the potential difference in this way and can know this way or you can use it for a day as it may be possible that the battery may discharge very fast. So the best way is to use it in the cell phone itself and see how much it run in one or two day.