power queen 24V 20A LiFePO4 Battery Charger — 0V Activation, Fast CC/CV Charging (100–240V)

Power Queen 24V 20A LiFePO4 Battery Charger is a smart, purpose-built charger that restores 24V LiFePO4 battery packs quickly and safely with 0V activation and multi-layer protection.

This compact, fully automatic charger is made specifically for 24V LiFePO4 (25.6V nominal, 29.2V charge) battery systems and uses a two-stage CC/CV profile to bring batteries to full capacity without user intervention. It accepts wide input voltages (100–240V), delivers roughly 19–21A output current, and includes an exclusive pre-charge/0V activation mode so batteries protected by a BMS can be reawakened without manual resets. The unit’s LEDs provide clear charging feedback while internal safeguards protect against reverse polarity, short circuits, over-voltage and overheating.

How quickly will it recharge my 24V LiFePO4 battery?

Because this charger supplies up to 20A to a 24V pack, it charges a typical 100Ah 24V LiFePO4 battery in about five hours under normal conditions. That halves the time compared with charging two 12V batteries separately with a 20A 12V charger.

• Output current: ~19–21A for consistent fast charging.
• Typical full charge: ~5 hours for a 24V 100Ah pack.
• Wide input: 100–240V for international use.

What safety features protect my battery and equipment?

The charger integrates multiple protections in its circuitry to reduce risk during charging and extend service life. It monitors temperature, prevents output over-voltage and short circuits, and guards against reverse polarity to avoid damage to the battery or charger.

• Over-temperature shutdown to prevent overheating.
• Short-circuit and over-voltage protection for safe operation.
• Reverse-polarity detection to stop incorrect connections.

Can it revive a deeply discharged or BMS-protected LiFePO4 battery?

Yes — the charger includes a pre-charge/0V activation function designed to safely wake batteries that the battery management system has locked down. Simply connect via the Anderson connector and the charger will attempt to gently raise the pack to a safe voltage before normal charging begins.

• Pre-charge mode targets 0V/BMS-protected packs.
• Automatic transition to full CC/CV charging once safe.
• No manual BMS reset typically required.

How easy is it to use and monitor charging progress?

Operation is straightforward: attach the included Anderson connector to the battery, plug the charger into mains, and the unit starts charging automatically. The front LED indicators deliver immediate status and diagnostic information so you can see when charging is in progress, complete, or if a fault is detected.

• Quick-connect Anderson plug for secure battery connection.
• LED status lights show charging, full-charge, and fault states.
• Plug-and-play setup — no complicated programming needed.

Who is this for? The Power Queen 24V 20A LiFePO4 Charger suits owners of 24V LiFePO4 battery systems who need faster turnaround and safe automatic charging: RV and marine owners with 24V packs, off-grid solar users, fleet technicians, and anyone replacing slow dual-12V charging workflows. It’s also helpful for technicians who encounter BMS-locked or deeply discharged packs, offering a reliable way to reactivate and fully charge batteries without repeated manual intervention.