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Porter Cable 20V MAX Power Tools Battery Interface

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Porter Cable 20V MAX Battery Pin-Out

The photo below shows the pin-out on the battery:

The pin on the right is the positive terminal. The pin on the left is the negative terminal. It's unknown what the two middle pins are for.

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Porter Cable 20V MAX Charger Pin-Out

The photo below shows the pins on the Porter Cable 20V MAX charger:

The charger interfaces to all four pins on the battery. But like the battery, it doesn't provide any clues to what the middle pins do. The pin on the left is the positive terminal. The pin on the right is the negative terminal.

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Porter Cable 20V MAX Power Tool Pin-Out

The photo below shows the pins on the Porter Cable 20V MAX Cordless LED Flashlight PCC700B:

You can see from the photo above, the flashlight uses three out of four pins.

In order to figure out how the tool operates with the battery, we insulated the middle pin with a piece of paper. We discovered that the flashlight still worked without the middle pin.

But it's quite possible that other Porter Cable power tools utilizes the middle pin. So we measured the resistance of that pin to the negative terminal and found the resistance is 10000 ohms, or 10 kilo-ohms.

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Compatibility with Black+Decker 20V MAX

After watching the following video, we learned that Black+Decker 20V MAX and Porter Cable 20V MAX are compatible electronically, although not physically.

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