FanGen – NiMH rejuv + charge up

See this thread for more info: www.energeticforum.com 4x 1.2V cells from a very old laptop battery. A couple of the other cells were showing sulphating all over the ends, they had leaked. These 4 seemed ok, so were hooked up to the output of the FanGen and off it went at 6V. Negative of the battery pack to the Hall sensor output and left side of coil, other side of the pack through a 1N4007 diode, then the +V and other side of the coil connection. Some odd effects were noted as it attempted to probably even see the batteries. Then, the rotor picked up slowly, the HV neon light came on and away it went charging. Pack voltage rose from 0V to 4.8V within 1hr. Further tests results: The charge rate can be set for the best final results. Fast charge produces a 1hr charge, but seems to deliver less current under load afterward. Slower charging (by reducing input voltage to the FanGen with a variable pot) slows the charge rate, but gives a better result after charging. All is in keeping with any other battery charger that has a variable charge rate control. It desulphates and rejuvenates Ni-MH batteries – VERY happy about that 😀

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