DeWalt 18v battery charger question

Why the timer, I am not familiar with the De Walt, but on my Milwaukee charger, the charger shut off when
the battery is charged, and you can let the batter set there until you are ready to use in a couple of hours, or
a couple of weeks? I think the Dewalt is the same, but a quick call to their service dept should answer the
question.

-- As ever, Gus-the 74 yr young apprentice carpenter

Check this out but I believe the Dewalt chargers have a “top off” feature that keeps them fully charged. Leave the power on and let the charger function as designed. On the Dewalt this is not supposed to harm the battery but should make it last even longer. Dewalt designs their batteries to have a 5 year life.

What is the purpose of the time?
After two hours, when it turns out it shuts off power to your charger. Did I get this right?
The question that I have is, how do you know that the battery is fully charged after two hours?
The charger should be smart enough to know the battery is fully charge and basically shuts off.

Grandpa is right, but is you shut power off that would like leaving it on your tool and not using it. It should hold power for a week or so.

Though you didn’t necessary follow manufacturer’s instructions verbatim (who actually does), your batteries should fail. Sound like a Manufacturer defect to me. Is it possible that your batteries are from the same batch?

So you build a box to house your charger, ???? Is it possible for the charger shut off because of high temperature? Your box must provide the charger and battery to dissipate heat.

-- I'll be a woodworker when I grow up. HHHOPKS