rparigoris
Joined: 24 Nov 2009
Posts: 797
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 Posted: Sun Mar 06, 2011 5:15 pm Post subject: Non-passive failure, Fuse link allegator clip |
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Working on the Solar powered trailer charging station project, we discovered a situation that needed to be addressed.
Each trailer services forty 17aH lead acid batteries. Each battery pack has a low voltage cutoff that cuts power to the load when the battery reaches 12.1 volts.
The problem we discovered is since the charger charges through the low voltage cutoff, if the battery were to sit and fall below 12.1 volts you would not be able to charge the battery.
We needed a stupid, simple, cheap, water and dirt resistant of bypassing the low voltage cutoff to charge a battery that gets below 12.1 volts.
The answer we selected is cheap 12 " long alligator clip from Hosfelt electronics (think 27 gage wire) soldered to a leftover piece of ~ 18 gage wire that already has a ring terminal on it.
Resolution is the alligator clip is located in a easy enough to access location where it can be clipped to a PIDG terminal to bypass low voltage.
Since it is connected direct to the hot side of the battery its a good idea to give it some protection.
Hence fuse link alligator clip. Many hundreds needed on first run.
Funny thing, after we tested the Fuse link alligator clip and burned it out, it somehow ended up on the bench. I needed a short alligator clip a few days later and picked it up figuring it was the good half of the one I cut in half for the test. Ha ha ha, strip, strip, strip, no copper to be found anywhere!
Ron Parigoris
Y11-03-06
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