Good Sam Club Open Roads Forum: I think I'm looking at new batteries.
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 > I think I'm looking at new batteries.

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wopachop

lb

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Posted: 09/29/19 03:53pm Link  |  Quote  |  Print  |  Notify Moderator

My friend has a trailer with (2) 6v costco batteries. They are around 4 years old. Never seen an equalization charge.

Ive asked many times to mess around with them and get shut down. Lets say one day im allowed to do the MEX 16v equalization charge like you taught me in a different thread.

If i do charge them together at 16v and notice one battery bubbling stronger than the other, is it best to charge them individually? Since i have the ability to do so?

MEXICOWANDERER

las peƱas, michoacan, mexico

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Posted: 09/30/19 12:50am Link  |  Quote  |  Print  |  Notify Moderator

No do them separately and use a hydrometer, to verify the weak sister cells. Ideally, each 2-volt cell would be available. That ended when the over-the-top tartop batteries disappeared.

The equalization Must be current controlled. 5 amps per 100 amps amp hour capacity or 5%.

joshuajim

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Posted: 09/30/19 07:34am Link  |  Quote  |  Print  |  Notify Moderator

MEXICOWANDERER wrote:

No do them separately and use a hydrometer, to verify the weak sister cells. Ideally, each 2-volt cell would be available. That ended when the over-the-top tartop batteries disappeared.

The equalization Must be current controlled. 5 amps per 100 amps amp hour capacity or 5%.


MEX, you have mentioned using the 100w bulb to control amperage many times, but how are you actually measuring the amperage.

* This post was edited 09/30/19 08:06am by joshuajim *


RVing since 1995.

joshuajim

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Posted: 10/01/19 10:45am Link  |  Quote  |  Print  |  Notify Moderator

Final report - I put the batteries back in and turned off the disconnect. After 3 days they are still at 12.7. All is well.

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