Hart 20v Battery Pinout Diagram

Disclaimer: This information is for educational purposes. Modifying batteries voids warranties and carries a risk of fire or injury. Consult a professional for repairs.

: if a battery sits too long and its voltage drops too low, the charger might reject it as "dead". Using a pair of jumper wires and a healthy 20V battery, Max connected Positive to Positive Negative to Negative for just ten seconds. Hart 20v Battery Pinout Diagram

| Terminal | Common Label | Function | Wire Color (Internal) | | :--- | :--- | :--- | :--- | | | B+ | Battery Positive (+20V) | Red | | T2 | BS1 | Battery Status 1 (Thermistor) | White or Yellow | | T3 | ID | Battery Identification (Resistor to B-) | Blue or Green | | T4 | BS2 | Battery Status 2 (often unused or second temp sensor) | Black or Brown | | T5 | B- | Battery Negative (Ground) | Black | Disclaimer: This information is for educational purposes

When looking at the (the side that slides into the tool), you will see a series of metal contact pads or slots. While the outer plastic shroud has a specific shape to prevent reverse insertion, the electrical contacts are standardized for the Hart 20V ecosystem. : if a battery sits too long and