1、Equipped with a stainless steel shell, which is High quality, anti-rust, impact-resistant and inflaming retarding. 2、Compatible with 12V and 24V ordinary battery and lithium battery. 3、Real-time digital display of current, voltage, battery percentage and charging status. 4、400W high power enables fast charging. 5、Intelligent pulse repair allows for longer battery life. 6、Automatic mode and manual mode meets different needs, one-button operation, easy to use. 7、Able to identify battery voltage, auto-adjust current, and auto-shut off. 8、Four stage charging protects battery: adaptive charging, constant voltage charging, floating charge, weak current supplement. 9、Six protections including short circuit conservation, reverse connection conservation, over current conservation, over heat conservation, low voltage conservation, and over voltage conservation. This intelligent battery charger is widely compatible with all kinds of 12V / 24V and 6Ah-400Ah battery, including Lead-acid battery, water battery, maintenance-free battery, dry battery, GEL battery, OPZV，VRLA battery, Solar battery, and 12.6V lithium battery, etc. Features: Equipped with a stainless steel shell, which is High quality, anti-rust, impact-resistant and inflaming retarding. Compatible with 12V and 24V ordinary battery and lithium battery. Real-time digital display of current, voltage, battery percentage and charging status. 400W high power enables fast charging. Intelligent pulse repair allows for longer battery life. Automatic mode and manual mode meets different needs, one-button operation, easy to use. Able to identify battery voltage, auto-adjust current, and auto-shut off. Four stage charging protects battery: adaptive charging, constant voltage charging, floating charge, weak current supplement. Six protections including short circuit conservation, reverse connection conservation, over current conservation, over heat conservation, low voltage conservation, and over voltage conservation. Note: 1. The charger is suitable only for charging compatible battery of 12V and 24V. 2. Not applicable to lithium battery lithium battery. 3. Please do not block cooling fan or use the charger while cooling fan is stopped. 4. Please prevent the charger from rain or water to avoid damage. Specifications: Model: MF-3S Material: Stainless Steel Plug: US Plug / EU Plug / UK Plug / AU Plug (Optional) Color: Bronze Peak Power: 400W Input voltage: 110V - 250V Output voltage: 12V,24V Peak Current: 12V-20A    24V-15A Charging Cable Length: 120cm Work Temperature: -30℃ ~ +35℃ Item Size: 21 * 16 * 8.7cm / 8.26 * 6.29 * 3.42in Item Weight: 950g / 33.51oz Package Weight: 1240g / 43.73oz Package Size: 27.5 * 19.5 * 10cm / 10.82 * 7.67 * 3.93in Packing List: 1 * Charger 1 * User Manual(English) 1 * Charger 1 * User Manual(English)