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Model Forum / Radio Controlled / Land Models / April 2005Futaba 3PM, bypassed diode, safe charge rate?
I have a computerized Futaba 3PM 3-channel FM transmitter. I am using Eight 2300mAh NiMh AA batteries with the transmitter. I bypassed the transmitter's charge jack diode and I can now use my SuperBrain peak charger to charge the NiMh batteries. Is there a limit on a safe charge rate that I can use to charge my batteries without damaging the transmitter? I know that my batteries are designed to charge at up to a 2A charge rate but I am not sure if I would damage the transmitter when trying to charge at that rate. I was thinking about charging at 1A. Ted shuffled out of his cave and grunted these great (and sometimes not so great) words of knowledge: I would either remove the batteries for charging or not exceed the 1 amp rate. Your typical "wal-wart" charger is only putting out about 100 mah on the transmitter side and about 50 mah on the receiver side. > I have a computerized Futaba 3PM 3-channel FM transmitter. I am using > Eight 2300mAh NiMh AA batteries with the transmitter. I bypassed the [quoted text clipped - 6 lines] > would damage the transmitter when trying to charge at that rate. I was > thinking about charging at 1A. As Ted said, stick to 1A; the wiring inside the TX can't handle much more than that without getting too warm. It is especially not a good idea if you are charging loose cells as the battery contacts will deteriorate and cause false peaks after a short time so if they are not allready get the cells made up into a pack, soldered or welded whatever you can get done. Chris you could do 2A for a fast charge,but i would charge them at 1A or .5 overnight, those batteries will last longer and will live longer if ya baby them, i never let mine die and then slow peak after c couple o hurs |
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