The State of Charge (SoC) indicator provides a quick glance of the batteries state of charge. The sleep function disables the battery’s discharge current, turning off any connected load. It also minimizes any unintended draining of the battery and enables maximum storage duration. To enable the sleep function, push the SoC test button for >three (3) seconds. This will turn off the battery discharging, shown via an illuminated power-down animation on the SoC test indicator. To wake up the battery, push the SoC test button for >three (3) seconds. This will re-enable the discharging current, shown via an illuminated power-up animation on the SoC test indicator. NOTE: Bosch Lithium Dual Purpose and Deep Cycle Batteries are shipped in “Sleep” Mode to prevent unintended discharge of the battery. While the Bosch LB24DP Dual Purpose Battery series will still accept charging current in Sleep Mode, this is not the case for the Bosch LB24DC Deep Cycle Battery series.