Renogy 24V 10A LiFePO4 Portable AC Battery Charger

The Renogy 24V 10A AC-to-DC LFP Portable Battery Charger is an AC-powered charger built exclusively for 24V lithium iron phosphate (LiFePO4) battery systems in RVs, boats, motorbikes, and camper-vans. Accepting 100–240 VAC at 50/60 Hz, it works with AC power grids worldwide and delivers up to 10A at 28.8 VDC output. A built-in lithium battery activation function can wake a battery that has entered BMS protection mode due to low voltage or low temperature.

Three-Stage Charging Protects Battery Health

The charger sequences through three stages automatically. In the constant-current stage, the charger delivers up to 10A (indicated by a solid red light) to bring the battery up quickly. In the constant-voltage stage, current tapers to 1A as the battery nears full capacity, preventing overcharge damage. In the trickle stage, current drops below 1A and the indicator turns green, confirming a full charge. The charger detects battery voltage continuously and switches stages without user input, reaching efficiency of 91% at 110 VAC and 93% at 230 VAC.

BMS Wake-Up Recovers a Battery Stuck in Protection Mode

When a LiFePO4 battery encounters low temperature or low voltage, its BMS can lock out charging entirely. That leaves the battery appearing dead and unresponsive. The Renogy 24V 10A charger includes a lithium battery activation function that applies a controlled charge to exit that protection state and restore normal charging. The indicator light also signals incorrect charging conditions, providing a visible alert before a problem can escalate.

Fanless Passive Cooling Removes Placement Constraints

The charger's patented plastic profile shell dissipates heat passively, with no internal fan. The fanless design produces zero operating noise and removes the need to orient the unit for airflow clearance, so it can be placed or mounted in tight compartments at any angle. Connecting the charger takes three steps: negative output lead to battery negative terminal, positive output lead to battery positive terminal, then the AC adapter cable to the charger's AC port.

Features

• Three-stage CC/CV/trickle charging: automatically switches between high-current, constant-voltage, and trickle stages based on detected battery voltage
• Lithium battery activation: wakes a 24V LiFePO4 battery that has entered BMS protection due to low voltage or low temperature
• Six built-in protections: short-circuit, over-current, over-temperature, over-voltage, under-voltage, and reverse polarity
• Wide AC input range: 100–240 VAC, 50/60 Hz, compatible with AC power grids worldwide
• Two output cable types included: alligator clips (recommended for short-term use) and ring terminals (recommended for long-term use), both 14AWG
• Fanless passive cooling: patented plastic profile shell dissipates heat without a fan, enabling silent operation at any mounting angle

Specifications

What's in the Box

• 1x 10A AC-to-DC LFP Portable Battery Charger
• 1x AC Charger Power Adapter Cable (1200 mm, 18AWG)
• 1x Ring Terminal Cable (600 ± 60 mm, 14AWG)
• 1x Alligator Clips Cable (600 ± 60 mm, 14AWG)
• 1x Blade Fuse (15A)
• 1x User Manual

Who This Is For and Isn't

This charger suits overlanders, van builders, boaters, and RV owners running a 24V LiFePO4 house battery, whether a native 24V pack or two 12V LiFePO4 batteries wired in series. The battery being charged must support a maximum charging current of at least 10A.

This charger does not support AGM, gel, flooded lead-acid, or any non-lithium battery chemistry. It is designed for 24V systems only and will not charge 12V or 48V batteries. The IP20 enclosure rating means the charger must be used in a dry, enclosed space and is not weatherproof.

Common Questions

What battery types does this charger support?

The Renogy 24V 10A AC-to-DC charger is designed exclusively for 24V lithium iron phosphate (LiFePO4) batteries. That includes a single native 24V LiFePO4 pack and two 12V LiFePO4 batteries wired in series to form a 24V system. It is not compatible with AGM, gel, flooded, or other lead-acid chemistries.

Can this charger wake a battery that has triggered BMS protection?

Yes. When a LiFePO4 battery's BMS locks out charging due to low voltage or low temperature, the Renogy 24V 10A charger's built-in activation function applies a controlled charge to exit protection mode and restore normal charging operation.

What battery capacity does this charger support?

The Renogy 24V 10A charger outputs a maximum of 10A, so the battery being charged must have a maximum charging current rating of at least 10A. No upper capacity limit is stated beyond that current requirement.

What cables and accessories are included, and what does each do?

The Renogy 24V 10A charger ships with an alligator clips cable (14AWG, recommended for short-term connections), a ring terminal cable (14AWG, recommended for long-term or permanent connections), an AC power adapter cable (18AWG), and a 15A blade fuse. The blade fuse provides additional reverse-polarity protection: if the output leads are accidentally reversed, the fuse blows rather than the charger body.

How do the indicator lights show what the charger is doing?

During the high-current (CC) stage, the Renogy 24V 10A charger's indicator light is solid red, showing active charging at up to 10A. The light remains solid red through the constant voltage (CV) stage as current tapers to 1A. When the charger enters the trickle stage and current drops below 1A, the indicator turns green, signaling the battery is fully charged.