Features: LCD display, brief key operation, very convenient. PWM charge mode can improve system efficiency and prolong the life span of the battery. Automatic indentification system voltage level, automatic temperature compensation. Adjustable charge-discharge control parameters, settable operating modes of loads. Over-load/short-circuit protection, battery reverse-discharge/reverse connection protection. Battery low voltage disconnection(LVD). Accumulated function of charge and discharge ampere hours. Suitable for street and pathway lighting, parking area, bus station, etc.