Re: OT-Melted battery post

Posted by Gene Davis(Ga) on August 28, 2006 at 19:03:38 from (12.175.230.38):

In Reply to: OT-Melted battery post posted by David Gray on August 28, 2006 at 10:08:16:

I work at a golf course where we see a lot of this happen. It is usually caused by excess resistance in the connectio, better known as a loose connection. we had one battery to explode because of the hydrogen gas given off while in use and the spark of the loose connection triggered it. The golfer was quite shaken up!. It is necessary to go around the batteriies on a weekly basis and just snug up the connections. I usually take a 1/4"diameter x1"long lag screw and carefully drill a 3/16" hole in the flat part of the post terminal that is left. be sure to wear goggles when dealing with this. Thread the lag screw through the cable(s) and the screw the screw into the lead post that you have cleaned till it is shiny bright and when it reaches the point where it tightens up against the post tighten very carefully so that you don"t strip out the threads. We have some of these that have been running for 14-16 months. The secret to a good performing electric golf cart is to keep the cable connections tight and clean. There is a great need to keep the batteries clean also to keep down the self discharge that comes fro current leakage . It really makes a difference if you clean the connections good with baking soda and when they dry coat each connection witha good coating of grease like you use in a grease gun to keep down corrosion. This really helps when kept up on a monthly basis The batteries on 36 volt carts use a lot of water also. Keep the electrolyte above the plates and refill ONLY AFTER charging them. If you see the batteries with bulged sides you can be sure they have been run very low on water and the heat generated in discharge/recharge cycles makes the cases swell Do not run these batteries too low as that also cuts into their life cycles. The purple case Trojan 105 amp hour batteries seem to be the cream of the crop for sustained use. They are also about the most expensive batteries.

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