PLASTIC BATTERY BOX WITH SOLAR PANEL TOP - KIT-SMBB11During daylight hours, the SunMate Battery Box(SMBB) converts the suns energy into DC electricity. The electricity is then directed to the battery to offset self discharge. SMBB enclosures maintain a constant float charge from the built in solar module. This both eliminates the need for manual charging and helps to prolong the life of the battery. All SMBB models will operate in hot and cold climates and include a blocking diode to prevent reverse