12V/24V Smart Car Battery Charger 0–15A – LCD Trickle Charger & Maintainer

The ROADWEST 12V/24V Smart Car Battery Charger is a heavy-duty 0–15A charger and maintainer designed for all common 12V and 24V lead-acid batteries. It works with AGM, GEL, Wet/Flooded, EFB, Calcium, MF and Deep Cycle batteries, making it ideal for cars, trucks, SUVs, RVs, boats, motorcycles and more.

With its intelligent control system, the charger automatically detects 12V or 24V battery voltage, so there is no need to manually switch modes. You can choose between Slow and Fast charge rates and two charging modes: Auto Off Mode for normal charging and Maintain Mode for long-term battery care.

In Auto Off Mode, the charger delivers a strong 0–15A charging current and automatically stops when the battery is full, helping prevent overcharging. In Maintain Mode, it works as an automatic battery maintainer, using pulse current to keep the battery topped up and help restore performance on older, sulfated or deeply discharged batteries once they have reached full charge.

The built-in Repair Mode uses high/low frequency pulse technology to help recover old, idle or stratified lead-acid batteries (above 3V). If a standard charge cycle fails, activating Repair Mode may bring weak batteries back to a usable state and extend their service life. (Please note this cannot revive severely damaged or completely dead batteries.)

For cold climates, the charger includes a dedicated Winter Mode that optimizes the charging curve in low temperatures, ensuring a complete charge even in freezing conditions and helping extend overall battery life. A large LCD display clearly shows charging percentage, current and voltage so you can monitor the process at a glance.

To protect both you and your equipment, the charger provides comprehensive safety protection, including overcurrent protection, overheat protection, reverse-polarity protection, short-circuit protection and spark-free contact. The result is a safer and more efficient charge for your vehicle batteries.

• Wide Compatibility: 12V/24V smart charger for lead-acid batteries only (AGM, GEL, Wet/Flooded, EFB, Calcium, MF, Deep Cycle); not suitable for lithium or LiFePO4 batteries.
• Automatic Voltage Detection: Automatically detects 12V or 24V systems to reduce setup errors.
• 2 Charge Rates & 2 Modes: Selectable Slow/Fast charge; Auto Off Mode for normal charging, Maintain Mode for long-term battery maintenance.
• Advanced Repair Mode: Pulse technology helps recover old, idle or sulfated lead-acid batteries (above 3V) and extend service life.
• Winter Mode: Optimized charging profile for cold conditions to ensure a full charge in low temperatures.
• LCD Status Display: Large screen shows charging percentage, voltage and current in real time.
• Full Safety Protection: Overcurrent, overheat, reverse polarity, short-circuit and spark-free protection.
• Heavy-Duty Design: Robust construction and high output current suitable for cars, trucks, boats, RVs and motorcycles.