The battery reaches 100% charge, the product will automatically switch output voltage to a safe storage or float level, so there is no need to worry about damage from overcharging. It has multiple protections and functions, including reverse polarity protection, short circuit protection, overheat protection, voltage regulation technology, and voltage detection function. This product is made of metal and electronic materials for durability. Suitable for 12V and 24V (6Ah-200Ah) motorcycles, minivans, agricultural equipment, dry batteries, water batteries, lead-acid maintenance-free batteries, start-stop, and gel batteries (not suitable for lithium batteries). Product Name: High Frequency Pulse Repair Charger Material: Metal Color: As shown Model: 400A Power: 220W Input Voltage: 120V-250V wide voltage Output Voltage: 12V / 24V Output Current: 7-8A Frequency: 50-60Hz Features: Good insulation, high efficiency, durable Power Cord Length: 80 cm Plug Type: US Plug (compatible with Canada, Mexico, Thailand, the Philippines, Taiwan, etc.) Package Contents: 1 x Battery Charger 1 x English Manual Note: Light reflection and different displays may cause the color of the item to appear slightly different from the actual product. Measurement error allowance is +/- 1-3 cm. Only the items listed above are included in the package; other products are not included.