Bill, keep in mind what I'm going to tell you I've never done before. Try putting a 6v charger in series with a 12v charger. Say you connect the negative of a 12v charger to the negative of your 16v battery. Connect the positive of the 12v charger to the negative of the 6v charger. Tape over the connection. Then put the positive of the 6 v charger to the positive of the 18v battery. Plug in both chargers. Make sure the amps don't exceed the current rating of your smallest charger. In theory, keep in mind in theory, this should work. Both of the chargers will have to be manual chargers. Don't think smart chargers will work. Again, I've never done this before.
Usually it takes about 12 plus hours charging at 20 amps to charge golf cart batteries, depending on how far down they are. You will need to watch to make sure you don't over charge. Use a hydrometer to determine the charge.
Let us know if this crazy idea works. I don't know if there is an 18v charger on the market.
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Today's Featured Article - My Ford Golden Jubilee - by Troy Estes. This article is about my '53 Ford Jubilee and a story that starts with taking the tractor to my brother's Starter/Alternator Rebuilding shop for a wiring fix. The generator was shot as well as all the wiring. I dropped off the tractor expecting a transformation from a 6 volt to a 12 volt system utilizing the original generator housing, and a total rewiring of the whole tractor. The front end center pin bushing was worn also so I ask that they replace it if they had time. Well, that’s wha
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