[ play video ]i have salvaged so many old lap-top batteries ( 18650 ) to reuse them in my solar projects.it is very difficult to identify the good cells in battery.... Wonderhowto mad science then built his diy battery tester with an arduino, lcd panel, digital thermometer, stripboard, usb cable, and some resistors and wire.. Looking to test aa, aaa etc batteries. there seem to be 4 testers commonly available; http://www.maplin.co.uk/search.aspx?menuno=77841 just want bin....
Video tutorial on how to determine if the battery in your vehicle is still good by doing a load test. in order to do a load test, you will need to purchase. Online shopping from a great selection at diy & tools store.. The schematics is pretty simple - the "voltage selector" switch is used to select the range for the the meter (almost any sensitive voltmeter or an amperemeter will.
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