12V 24V Car Battery Charger & Engine Starter, 0-30A Automatic Battery Maintainer, 130 Cranking Amps

Additional Details from the Manufacturer

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More features

• 5-in-1 Device: Battery Charger, Engine Starter, Battery Maintainer, Battery Repair, Desulfator. Whether you need daily charging, long-term maintenance, performance testing, or restoring aging batteries, one device meets all your needs, saving you the trouble and expense of purchasing multiple devices.
• Efficient, Energy-Saving, Fast Charging: The battery charger automatically recognizes battery voltage (12V: 8A/15A/30A, 24V: 4A/7.5A/15A). The maximum charging current is 30A, capable of fully charging a battery in a short time to meet your different needs. It not only saves energy but also saves you a lot of waiting time.
• Engine Start Mode & Winter Mode: The Engine Start Mode delivers 130A current, activating the car battery and starting the vehicle within 3 seconds. Winter Mode adds 0.2V above the original charging voltage, better activating the battery in low-temperature environments for a more complete charge. However, for severely discharged batteries with a voltage below 1 volt, this product cannot charge or jump start — this is an intelligent safety limitation designed to protect both the device and the user.
• Fully Automatic Smart Charging: Simply press the start button, and the charger begins charging immediately — no 30-second wait like other products. Built-in anti-overcharge auto shut-off and voltage-drop restart function. Automatically stops charging when the battery is full; with clamps connected, resumes charging when voltage drops, enabling maintenance charging. Helps restore and extend the life of sulfated, stratified, or deeply discharged batteries.
• 7-Stage Smart Charging Process: Battery Detection → Pulse Repair Desulfation → High-Current Charging → Trickle Charging → Re-Detection → Float Maintenance → Absorption Charging. The entire process requires no manual intervention. This scientific charging logic not only restores damaged batteries and extends their service life but also prevents irreversible damage caused by overcharging or over-discharging.
• Fully Automatic Smart Charging: Simply press the start button, and the charger begins charging immediately — no 30-second wait like other products. When the battery reaches 100% charge, the device automatically switches to trickle charge mode, allowing long-term connection without damaging the battery.
• Safety Protection – This 12/24 volt battery charger features a built-in multi-protection system, including reverse polarity protection, short circuit protection, overcharge protection, over-temperature protection, over-voltage protection, and over-current protection. It is also equipped with a dedicated reverse connection protection device that prevents user misconnection and automatically detects faulty batteries. The upgraded cooling system includes a high-power built-in fan, and the clamp plastic withstands temperatures up to 120°C, ensuring stable and reliable operation even during prolonged high-current use.