Optimate Tecmate 4 Quad Program 12V Battery Charger
(OptiMate 4 Quad Program tests before & after charging and can recover a ‘dead-flat’ lead-acid & lithium (LiFePO4) battery from as low as 0.5 Volts. BMW CAN-bus compatible: 5V - 14.4V. 3). 12.8V Low Volt Recovery: 0.5V - 14.4V. 4).