power queen 12V 20A LiFePO4 Battery Charger — 14.6V Smart CC/CV, Pre‑Charge & Active Cooling

Power Queen 12V 20A LiFePO4 Battery Charger is a dedicated 14.6V smart charger that fast-charges 12.8V LiFePO4 batteries with a 2-stage CC/CV algorithm and built-in safety protections.

This charger is engineered specifically for LiFePO4 battery chemistry, offering a 20A constant-current output and a 14.6V constant-voltage finish to recharge 12V (12.8V nominal) lithium iron phosphate packs quickly and safely. Its pre-charge capability can wake batteries down to 0V and its aluminum housing plus active cooling help maintain reliable operation during extended charging. The unit accepts 100–240V AC input, making it suitable for home, workshop, or mobile setups worldwide.

How does this charger safely recharge deeply discharged LiFePO4 batteries?

The Power Queen charger implements a tailored two-stage CC/CV profile and a pre-charge routine that gradually applies current to batteries at very low voltages. Multiple protections monitor temperature, polarity, short circuits, and output voltage to reduce the risk of damage from improper connection or environmental stress.

• Pre-charge mode enables recovery of batteries reading down to 0V.
• CC/CV algorithm: 20A constant current, then 14.6V constant voltage finish.
• Built-in protections: over-temperature, short-circuit, reverse polarity, over-voltage.
• Cooling fan and aluminum alloy body for stable heat dissipation.

How fast will it recharge my LiFePO4 battery compared to small trickle chargers?

At 20A output the charger dramatically shortens recharge time versus low-amp multi-chemistry chargers. For example, a 100Ah LiFePO4 battery can reach full charge in roughly five hours under ideal conditions, compared with many low-current chargers that take multiple days.

• 20A constant current reduces bulk-charge time significantly.
• Approximately 5 hours to fill a 12V 100Ah LiFePO4 battery from low state of charge.
• Far faster than typical 3A chargers, which need many tens of hours.
• Smart CV stage prevents overcharging and topping-off inefficiencies.

What installation and operational features should I expect?

The charger is plug-and-play for AC supply, paired to batteries via output leads, and includes LED status indicators showing charging phases. Its compact aluminum housing resists corrosion, and the internal cooling fan keeps temperatures down during sustained use.

• Rated input: 100–240V AC, 50–60Hz for global compatibility.
• LED indicators display charging stage and status at a glance.
• Durable anodized aluminum case with active fan cooling.
• Output leads and connectors designed for secure battery attachment and polarity protection.

Will this charger work with my 12V LiFePO4 system and help prolong battery life?

Yes — because it follows LiFePO4-specific charging parameters (14.6V CV limit and appropriate current), it reduces stress that can shorten battery life compared with improper charging profiles. The safety features and controlled thermal management further support long-term, reliable cycling when used as recommended.

• Specifically tuned for 12.8V LiFePO4 chemistry, not generic lead-acid profiles.
• Protections reduce risk of charging faults that accelerate wear.
• Controlled CV termination avoids overvoltage stress.
• Pre-charge capability helps recover and stabilize low-voltage cells safely.

Who this is for: Installers, van-lifers, RV owners, boat owners, small off-grid system users, and anyone who maintains 12.8V LiFePO4 battery banks and needs a reliable, faster-charging, chemistry-specific solution. It suits users who require global AC compatibility, clear charging status, and built-in safety features to protect both charger and battery during routine and recovery charging.