Smart Battery Sense is a wireless battery voltage and temperature sensor for Victron MPPT Solar Chargers. With voltage and temperature sense in place, batteries will be better charged; improving charging-efficiency and prolonging battery life. Improves battery charging By measuring voltage at the battery bank terminals, errors arising from voltage-loss due to cable resistance are avoided - guaranteeing the correct charge-voltage. For lead batteries, battery temperature data is used to adjust the charge-voltages: cold batteries require an increased charge-voltage, whereas hot batteries require a decreased charge-voltage. For lithium batteries temperature data is used to disable charging when they are too cold: charging lithium batteries near or below freezing causes permanent damage to the cells. Look no wires The connection between Smart Battery Sense and one or more Solar Charger(s) is wireless: It uses VE.Smart Network - a wireless technology based on Bluetooth Smart. Information t