Hart 20v Battery | Pinout Diagram [hot]

Never attempt to bypass the TH (Thermistor) pin, as it is the primary safety measure against battery combustion during rapid charging. Hart 20v Battery Pinout Wiring Diagram

If T1 to T5 reads 0V, the battery’s internal protection (BMS) has shut off due to over-discharge or short circuit. A Hart charger can reset it. Hart 20v Battery Pinout Diagram

Many hobbyists use these batteries to power electronics because they are affordable and easy to swap. Never attempt to bypass the TH (Thermistor) pin,

Do not force a Hart battery into another brand’s tool or charger. Physical fit may be close, but electrical differences will damage the BMS or cause a fire. Hart 20v Battery Pinout Diagram

If your battery requires the thermistor circuit to activate: