Features: Use a single-chip microcomputer control to achieve the intelligent, strong adaptability, reliable function. PWM charge mode can improve system efficiency and prolong the life span of the battery. 12/24V DC (auto work). With LED indicator to show the current battery state. Use exposed wiring terminal, which makes the wiring more convenient. Short-circuit/over-load/under-voltage/over-charge/over-discharge/reverse polarity protection, automatic control and so on. Accurate temperature compensation function. Suitable for street and pathway lighting, parking area, bus station, etc.