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MB-1-E Part Eleven: More Wiring
Submitted by MB-1-E on Sun, 05/27/2007 - 01:25
I finally got my batteries all wired with the DPDT switch so I can charge at 12V and run at 24V (both nominal voltages, as we all know AGM SLA's are a bit higher than that at full charge).
So I now have two battery banks, each has 4 - 9Ah 12V batteries. Each bank is in parallel and the two banks are wired in series through the DPDT switch.
Thanks to a few electrical wizards here I was able to get this right and it works like a charm.
I'm charging the full set right now using my Iota DLS-15 charger with QD4 three stage charge controller.
I haven't wired up the motor controller yet, but that should be fairly simple. I'll be running 6Ga welding cable from the batteries to the controller and from the controller to the motor.
Still have the throttle to install, not sure which leads are which on it. I assume black is negative on the controller and there is also a brown and a blue wire. I wonder which one is the POT.
I think I have everything else I need for the project now, just need to get some more heatshrink and figure a good way to insure that the leads on the DPDT switch cannot move when traversing rough terrain.
I was thinking of using something like silicone caulking to totally isolate the wires and connectors at the back of the switch. Anyone ever try this?
Got some mechanical things to wrap up too, but today was all wiring and getting the charger connected.
I tested the motor on 26+ volts and it really sounded good. I left it running for a couple of minutes and it kept speeding up slightly. Must be the brushes getting seated and the bearings loosening up a little.