Describe: Once the battery reaches 100% charge, the product automatically switch its 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, namely reverse polarity protection, short circuit protection, overheat protection function, voltage regulation technology and voltage detection function. This product is made of metal and electronic component materials for durability. Suitable for 12V 24V (6Ah-200Ah) motorcycles, cars, minivans, agricultural equipment, dry batteries, water batteries, lead-acid maintenance-free batteries, start-stop, 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, Power cord length: 80 cm Plug Type:US Plug,it applies