Intercom battery

The utility model relates to a high intercom battery of security, including the casing and battery core and PCB board in installing herein the casing respectively, be equipped with in proper order theinterface that charges, overvoltage protection observation circuit, charging circuit that the electricity connects on the PCB board, cross current short circuit protection circuit and battery chargeprotection circuit, outside the grafting of the interface that charges was held and is stretched out the casing, the positive pole of battery core was connected in battery charge protection circuit'sinput, and the negative pole of battery core is connected in battery charge protection circuit's output, charging circuit has temperature test input end, and this temperature test input end is connected with battery temperature measurement circuit, charging circuit has state indicated output end, and this state indicated output end is connected with battery charging indication circuit. The utilitymodel discloses an intercom