porter cable battery charger issues

Old 04-11-18, 09:07 PM
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porter cable battery charger issues

I bought a porter cable power tool set exactly a year ago.

The last few days I noticed the batteries die after 5 minutes of use. Which was odd because I had just taken one of the batteries off the charger, which was saying it was fully charged.

I put the battery on the charger and immediately the charger is saying its "fully charged". The weird thing is, both batteries are saying fully charged when I put them on the charger but they are dead when I try using them.

There's no way....so I pulled the battery off the charger. Put it back on the drill and it immediately died. I put it BACK on the charger. The charger is saying its fully charged.

I've used them from time to time in the last year. But I haven't used them that much
Old 04-11-18, 10:16 PM
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Welcome to the forums.

Since it's a relatively new tool..... it probably uses a PWM (pulse width modulated)/switching charging circuit. Instead of charging at a steady low voltage..... they pulse high voltage DC to the battery. These types of chargers are basically non repairable for a DIY'er.

You could post the model of the charger for further comment.
Old 04-12-18, 04:07 AM
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I don't know if it's related to your problem but the batteries for my 19.2 volt craftsman tools occasionally don't want to charge [dead battery shows the green light on the charger] I found that if I wiggle the battery or remove and put it back on the charger I can finally get the red light to come on and it will charge. Sometimes it takes a good bit of fiddling with it to make it start charging.
Old 04-12-18, 06:12 AM
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Is your tool still under warranty. If so that would be my first step.

Which battery technology does your tool use? There is a chance it might still be NiCad or NiMh though it's probably Lithium. What type you have will determine how fussy it is about charging.

Do you have a volt meter. Can you check the voltage of your battery pack?

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