Clean the small inner pins on both the battery and the charger.
Example pinout (illustrative only) Because Hart does not publish a single universal pin diagram, the following is an illustrative example of a 5-pin pack connector layout seen in similar consumer packs (LEFT = pin 1, RIGHT = pin 5 in a row). Do not assume this matches your specific Hart pack.
The Hart 20V battery pinout diagram consists of several pins, each with a specific function. The following is a breakdown of the pinout diagram: hart 20v battery pinout diagram better
When looking directly at the interface slots of a standard Hart 20V battery pack (with the locking clip facing upwards), you will find multiple distinct terminal connections. While different amp-hour (Ah) capacities exist—such as 1.5Ah, 2.0Ah, or 4.0Ah packs—they all utilize a standardized slot blueprint: Terminal Slot Label / Designation Primary Technical Function B+ (Positive)
: Reads 20V to the Positive terminal and 0V to the Negative terminal under standard meter testing conditions. 4. C (Control) Terminal Clean the small inner pins on both the
: This pin connects to a 10k-ohm internal thermistor used for temperature monitoring. If the pack is too hot or cold, the charger or tool will shut down for safety.
Hold the parallel connection for to introduce a surface charge. The Hart 20V battery pinout diagram consists of
The main power output terminal, typically providing ~20V relative to the negative terminal when fully charged.