Features: Safe and Reliable Operation: battery charger with several safe protections to ensure safe using, it has over voltage protection, over temperature protection, overcharge protection, short circuit protection, reverse connection protection, overcurrent protection, and low current protection. 3 Charge Stages: constant current charging, constant voltage charging, and float charging, which are suitable for most battery types including calcium, gel and AGM, wet batteries. Low Noise & Heat Dissipation: silent designed cooling fan works with aluminum radiator, which greatly prolonged the life of the charger. Intelligent Digital Display: clear LCD screen real-time display temperature, current, voltage and battery capacity. Humanization Charging Mode: with summer and winter mode, this fully automatic battery charger is able to detect the temperature and switch to the appropriate charging voltage automatically. Reliable Quality: pure copper transformer has strong power and stable output to charge up battery quickly. And the ABS material is flame retardant, insulation resistance, and high temperature resistant. Specifications: Plug Type: EU / US (Optional) Material: ABS+copper+aluminum Input Voltage: AC100-220V, 50/60Hz, Max.75W Output Voltage: DC13.8-15.5V, Max.6A Battery Range: 4-100Ah Item Size: 150 * 90 * 65mm / 5.91 * 3.54 * 2.56in Item Weight: 412g / 14.53oz Package Weight: 455g / 16.05oz Package Size: 22 * 12 * 7cm / 8.66 * 4.72 * 2.76in Package List: 1 * Pulse Repair Charger Note: Can not be used to charge the lithium battery.