Hart 20v Battery Pinout Diagram ((top))

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The Hart 20v battery features a 5-pin connector that provides a secure and reliable connection to the power tool or charger. The pinout diagram of the Hart 20v battery is as follows:

Conclusion

Understanding the Pinout

Terminal Functions (Pinout)

| Terminal | Common Label | Function | Wire Color (Internal) | | :--- | :--- | :--- | :--- | | T1 | 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 | Hart 20v Battery Pinout Diagram

(Note: On some compact 2Ah packs, Pin 4 may not be present or may be physically blocked, leaving only 4 visible contacts. However, the outermost large contacts are almost always Positive and Negative.)

How to Identify Your Hart Battery’s Pinout Without a Diagram

If you have a multimeter and a Hart battery of unknown revision: A very specific topic

The answer lies in understanding the Hart 20V battery pinout diagram.