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Charging a battery

3

37chief

Well-known Member
Location
California
The manufacture of my battery says to charge it at 10 amps to get a full charge. If I use a 6 amp, and a four amp charger will I be putting 10 amps in my battery? This battery is for my motorhome. I believe it is called a gell battery, no filler caps. Stan
 
I would go for the lower power charger for a longer time, given that you"re not in a rush. Do not use both at the same time.
 
Stan,
About 9 months ago, I purchased a BatteryMinder,#12248, battery charger. There is a setting for 2 amp, 4 amp and 8 amp charging rate, There is also a setting for gel, flooded and AGM Batteries. BatteryMinder says the 3 different batteries have three different charging voltages. BTW, AGM batteries look like sealed batteries too.

The charger cost me a pant load. Could only buy it on amazon or ebay. It is designed for keeping batteries healthy and desulfating plates. Can't really say if it does either. To date, it hasn't brought a battery back from the dead. I use it all the time to charge the battery on dump trailer, trolling battery or what ever battery is sitting on the work bench. Rotate batteries in the winter.

You need to ask someone who has a motorhome or golf cart, like JohnT, he has both. IMHO expensive batteries need to be kept on a hi-tech trickle charger to keep them healthy. The worst thing you can do to any battery is overcharge, undercharge or let them go dead. If you invested in an expensive battery, you may want to invest in a good charger too.

George
 
What Dean said,

If you hook two chargers up at the same time, neither charger can "read" the battery. It will just be seeing the other charger.

Put the 6 amp charger on 'er and walk away for a day or two.

Allan
 
Just put a 6 amp charger on it, it will just take longer to reach full charge.Batteries start gassing at 6 amps, gassing causes acid corrosion on cables and battery cases.Fast chargers are battery killers.You will find that 5 amps is a good rate and that will taper off as the battery charges.
 
Bought a little maintainer couple months ago at farm and fleet, works on 6 or 12 volts and shuts off when battery is charged. Works perfect and I move it around from one battery to another each day r 2 or so to keep everything charged. Around $20.
 
I bet if you read the instructions on the battery again, it says to charge it at a MAXIMUM of 10 amps. Your smaller 4 or 6 amp charger will do fine individually, use either one and do not leave them on too long unless they are a "SMART or AUTOMATIC" charger designed to charge GEL or AGM batteries.

A standard MANUAL charger can dry out and destroy a GEL or AGM battery if left on too long.
 
Don't expect a BatteryMINDer to magically "fix" a shorted or worn out battery, nothing will do that.
A mechanically sound battery that has become sulfated from sitting around at less than full charge, will benifit from the desulfator feature, often returning to 90% + of new capacity.
I have 4 of the BatteryMINDers and rotate them throuh all my seasonal use equippment(30+ batteries) which often sit 9 months unused.
It keeps a good battery good, but will not perform magic on shorted or worn out junk.

Just don't expect it to turn worn out junk into a good battery.
 
Totally agree Jon Hagen. It won't turn straw in to gold. Not even sure it desulfates. Had a battery in truck that was fully charged, yet it failed the load test at the dealer. Keep in mind the battery started the truck. Only knew it was bad because my dealer does a complete check on everything when I get an oil change. Used BatteryMinder for 2 months on battery, no luck.

I have many batteries too. BatteryMinder is always on a battery. At $110 don't think I'll ever buy another one.

George
 
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