Both Lithiumax battery models have superior LiFePO4 cells and a BMS (battery management system). But the RESTART9 (& RESTART7) comes with additional BMS-functionalities.
1) RESTART function
Our Lithiumax RESTART models have an internal "battery-main-switch", triggered when the voltage drops below 11.5 volts. With that additional function, the battery disconnects itself from all energy depleting sources of the car and "waits" for its restart. To restart the battery, just press the button on top. You will hear a firm click and your battery is ready to crank your engine. Even with 11.5 volts, LiFePO4 batteries have enough power to start almost every engine.
2) Battery-Safety function:
The battery-safety function comes into place when you continue to deplete your battery after the 11.5 volt hard-cut. For example, you just restarted your battery but don't start the engine and leaving the car in the garage for another 2 months. In this case your car will slowly but consistently deplete your battery down to 8 volts. At 8 volts the battery hard-cut is triggered again and disconnects itself. Now you must charge the battery with a suitable charger (We advice to use our Lithiumax 10A Fast Charger).
- 850 Cranking Amps for 10 seconds, 55Ah PbEq,
- No Restart function
- No Battery-Safety function at 8volts
- Recommended for Race- & Track-Use
- Use with an external battery-main switch
- 900 Cranking Amps for 10 seconds, 68Ah PbEq
- Restart function @11.5v
- Battery-Safety function @8v
- Recommended for Daily- & Street-Use