[Shop-talk] Resurecting a totaly dead battery ?

[Jack Brooks]

Yes  a battery tender or battery minder would be you best bet.  Leave it on there for at least a week.  You may need to boost it with a charger if it won't get started for to lie voltage, but that is your best bet for saving the battery

I use a BatteryMinder, likely the same basic circuitry as the tender,.  I have brought back some really weak batteries, some that would barely crank the engine over by leaving them on that "pulse" cycle for a week or more and now they work great even in the cold winter months.  What they claim it does, is break down the sulfate growth between cells, which is what eventually kills the battery.

I usually put every battery in the garage on it for a day or two a year as a precaution.  The dying batteries are still running strong.

Jack

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