The Tegpro Diversion Battery Charger displays voltage and current while charging your Lead Acid Battery. The unit will allow the battery to charge up to 14.4 V DC and will accept up to 30 V DC. It will boost the charge starting at 8 VDC and also offers reverse polarity protection to prevent the battery from backfeeding the Thermoelectric Generator when the stove is not in use. This unit will prevent the Thermoelectric Generator from becoming overloaded which can cause the cooling fans to stop spinning and overheat the device.