power queen 12V 10A LiFePO4 Battery Charger — 14.6V CC/CV Fast Charge, Pre-Charge for BMS

Power Queen 12V 10A LiFePO4 Battery Charger is a purpose-built 14.6V CC/CV charger that fast-charges 12.8V LiFePO4 batteries safely with built-in protections and a Pre-Charge mode for BMS activation.

This compact, aluminum-alloy charger delivers a steady 10A constant current and a controlled 14.6V constant-voltage top-up designed specifically for LiFePO4 chemistry. It uses a two-stage CC/CV charging profile and a Pre-Charge routine so even deeply discharged packs and Battery Management Systems (BMS) that read near 0V can be awakened and charged. With a built-in cooling fan and multiple safety circuits, it balances charging speed, battery compatibility, and device longevity.

How fast will it charge my 12.8V LiFePO4 battery?

At 10 amps of charging current, the Power Queen charger significantly reduces time-to-full compared with low-amp chargers. For example, a 50Ah LiFePO4 battery can reach full charge in roughly five hours under normal conditions, depending on battery age and temperature.

• 10A constant-current stage for rapid bulk charging
• 14.6V constant-voltage stage to top off safely
• Typical 50Ah charge time: ~5 hours
• Pre-Charge option helps revive deeply discharged batteries

Will it work with my battery’s BMS and low-voltage packs?

The charger includes a Pre-Charge feature specifically to engage BMS units and allow current to flow into batteries that report very low voltages. This makes it more reliable for packs that have protective disconnects compared with generic lead-acid chargers.

• Pre-Charge wakes BMS-protected cells reading near 0V
• Correct LiFePO4 voltage profile (14.6V max) avoids overcharging
• Safe for 12.8V (nominal) LiFePO4 battery systems
• Not intended for lead-acid charging profiles

What protections and build features keep charging safe?

Safety is handled through multiple layers: thermal cutouts, short-circuit shutdown, reverse-polarity protection, and over-voltage limits. The enclosure is aluminum alloy with oxidation treatment and an internal cooling fan to maintain stable operating temperatures during long charge cycles.

• Over-temperature protection to prevent overheating
• Short-circuit and reverse-polarity safeguards
• Aluminum housing and active fan for effective heat dissipation
• LED indicators for charge status and error notifications

How do I install and use the charger safely?

Installation is straightforward: connect the provided heavy-gauge cables to the battery terminals with correct polarity, plug the charger into AC power, and monitor the LED indicators while charging. Place the charger in a well-ventilated area and avoid sealed compartments to allow the fan to cool the unit.

• Use supplied battery cables and secure terminal connections
• Confirm correct polarity before applying AC power
• Run the charger in open air for optimal cooling
• Observe LEDs for charging progress and fault alerts

Who is this for?

The Power Queen 12V 10A LiFePO4 charger is aimed at owners of 12.8V LiFePO4 battery systems who want faster, chemistry-appropriate charging: RV and marine users, off-grid and solar enthusiasts, smaller EV or mobility battery owners, and anyone upgrading from slow, multi-chemistry chargers. It’s ideal for battery packs 20Ah and larger that require a 14.6V LiFePO4 charge profile and built-in safety features for reliable daily use.