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nonstoprc -> RE: Charging A123 batteries in the plane? (9/30/2011 1:40 PM)
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Yes, I have been using "3170 - Futaba J switch".
Photo 1 below shows my charging harness that goes to a GP TRITON charger at one end, and to the charging socket on himax Futaba J switch on the other end. The wiring is as follows.
1. Black wire goes from the charger, to the black wire on the balancer, and to the black wire on the himax J switch;
2. Red wire goes from the charger, to the red wire on the balancer, and to the red wire on the himax J switch;
3. The signal wire goes from the himax J switch to the balance wire on the balancer.
In the airplane, connect the "middle"/balance wire, plus the black and red wires from the battery to the charging side of the switch. The "middle" wire of a 2-cell A123 and the black wire provide half of the voltage of the pack (~3.3v).
Photo 2 is the J switch with the signal wire cut at the receiver side.
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