A smart fast digital battery charger. Battery Current . 30AThis Car Battery Charger have 10-second car engine start function and temperature control fan, when MCU detect the charger’s temperature more than 45 degrees will open the fan until below to 35 degrees.Can choose charging current, 30A.Also have auto stop when full recharge function.Three-phase constant current,constant voltage,floating(trickle)quick charge.10-second car engine start function.High efficient power transfer technology.Compact and lightweight design.All kinds of working state digital display.Intelligent digital battery repair and active function.Various power circuit protection.Alumium magnesium shell,plane drawbench and metal anodic oxidation tecnology.Temperature control fan.LED display.Input voltage12v  3000w Efficiency Durable metal housing provides advanced protection from drops and bumps. Integrated cooling fan helps reduce heat and prevents shortages. [Protections].1.Overload protection .2.Input over voltage protection. 3.Over-temperature protection . Input voltage 12v. Output voltage 230 Ratedpower 3000w.Efficiency >85%.Durable metal housing provides advanced protection from drops and bumps. Integrated cooling fan helps reduce heat and prevents shortages. [Protections].1.Overload protection .2.Input over voltage protection. 3.Over-temperature protection 1.High conversion efficiency, smart soft start function. 2. Multiple safe protection . 3. Input and output are completely independent. 4. Smart, light, and portable, designed for home use. 5. Universal socket, suitable for all kinds of plugs. 6. High-precision voltage stability technology.