Battery test

Two days ago I did a test to see how much energy a 2000mAh AA NiMH battery holds. The battery voltage started at nearly 1.4 volts, and ended at 0.05 volts. The battery was connected to a 10 ohm resistor. The final energy was 6873 joules, which is a bit lower than the factory spec of 10000 joules, but that's no surprise since they probably cherry pick the best one they could possibly find, and then over charge it. Who knows, that's capitalism at its best,   , but I did not over charge mine.

So, 6900 joules is a good figure for 2000mAh NiMH batteries, and 8600 joules a 2500mAh. My Ultracapacitor is ~ 550 farads at low voltages (less than 0.4V), and lets just assume it's 650F at 2.7V, for an average of 600F, which comes to 2200 joules. So 6900 J / 2200 J = 3.1 times. As far as I'm concerned, one can prove a JT is cop>1 without doubt by either self-running, or by using one 2000mAh to 2500mAh NiMH battery to charge a BCAP0650 4 times.

I'll try doing this today to see how many times my first JT can charge the BCAP0650.

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