Feature: 1. Adopt switching power supply structure, possess wide input voltage range, small size, light weight and high efficiency 2. Two-stage charging method (first constant current and then constant voltage) for automatic charging 3. Can be fully charged according to the charging characteristics of the battery to prevent the battery from overcharging and maximize the battery life 4. Built-in current protection circuit, which can effectively protect the charger in the case of over current, short circuit, reverse connection, etc. 5. The power indicator and charging indicator will flash quickly as an alarm signal Specification: Item Type: Automatic Battery Float Charger Material: Iron Input Voltage: 30-250VAC Output: 24VDC Output Current: 0.5A Working Temperature: -30℃ to +55℃Size: Approx. 98 x 143 x 52mm / 3.9 x 5.6 x 2in. Package List: 1 x Automatic Battery Float Charger Note: Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.