geller6980

I've made my own prototyping board with rechargeable AA batteries. This allows me to easily add up to 6 in series or parallel - planning to test longevity of the charge eventually. This picture is 3 AA in series, giving 4.5V to a 2.1k ohm resistor (I think 2.1k).Measuring the leads on the LED shows 3V.Measuring the current (in-line meter setting 10 VmAohm), I get 4 - not sure what that's telling me exactly