Quote:
Originally posted by Adam Y.
I have done this before besides a little bit of sparks nothing really was destroyed. The only time you risk destroying a battery from hooking it up to a motor is if you stall the motor.
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OK guys, We have talked about this before. If you stall the motor you are putting one or two windings in parallel across the power source. There is still some resistance in the windings and therefore the resistance will limit the current.( It will be high but not maximum.) This
IS NOT the same as a short of zero resistance. Maximum current will be drawn from the power source. In our case the battery is capable of more than four hundred (400) amps. That is more than enough to weld wire to the terminals, create a shower of sparks (both fire hazard and burning hazard), may cause bright flashes (retinal burns) and ultimately could cause battery explosion. Just because you have never witnessed a battery exploding doesn't meant it can't happen. Some of you have seen a battery that was stressed, swell and deform the case. That should be evidence enough that catastrophic failure is possible.
Sealed Lead Acid batteries are still lead acid batteries. The electrolyte is a sulphuric acid compound and the plates are lead. When batteries are stressed the electrolyte heats up and the lead deforms both of which contribute to the swelling case. You can interpolate the result if the deformation was rapid, an explosion would be the result. Hot, gelled sulphuric acid and plastic shrapnel are not my idea of fun.
I would try this, start by removing all of the circuit breakers that feed motors. If the controller still shuts down, it is not the motors or controllers. (assuming you have wired them according to electrical rules.) If all is OK, then insert one breaker and try again. Continue until you find the offending device. My suspicion is a wayward connector that will be obvious under visual inspection, or a damaged drill motor. Please let us know what you find.