Guanlan 24V LiFePO4 Battery Charger 30A (29.2V) IP67 Waterproof Smart 3‑Stage

Guanlan 24V (29.2V) 30A LiFePO4 battery charger is a weatherproof, high‑current AC‑DC charger that restores and fast‑charges 24V lithium Iron phosphate batteries with three connection options and built‑in safety protections.

This compact, IP67-rated charger combines a powerful 30A output with an intelligent three‑stage charge algorithm to refill 24V (25.6V nominal) LiFePO4 battery banks quickly and safely. Designed for boats, RVs, campers, solar systems and off‑grid battery banks, it includes temperature compensation, a low‑voltage wake function for BMS‑tripped cells, and multiple connector types so you can hook up to Anderson ports, M8 posts or use alligator clamps.

How fast will this charger recharge a 24V LiFePO4 bank?

The Guanlan charger delivers up to 30 amps and uses pre‑charge, constant‑current and constant‑voltage stages to restore capacity efficiently. Typical charging time varies with battery size and state of charge, but it's substantially faster than lower‑amp chargers.

• 30A max output — full charge of a 150Ah 24V LiFePO4 battery in roughly 5 hours from low state.
• Three‑stage smart charging reduces current as voltage approaches setpoint to avoid overcharging.
• Auto shutoff when charging completes to avoid trickle‑overcharge stress on LiFePO4 cells.

Can it revive deeply discharged batteries or units tripped by a BMS?

Yes — the charger features a low‑voltage activation mode that can bring a BMS‑cut battery back into normal operating range. This wake function helps recover packs left at very low voltages, letting the battery accept regular charging again.

• "0V" wake capability to restore batteries cut off by protection circuits.
• Pre‑charge stage softens initial current for deeply discharged packs.
• Automatic transition to CC/CV once safe voltage is reestablished.

What protections and reliability features are included?

The unit incorporates multiple safeguards and thermal management to protect both charger and battery. If an abnormal condition is detected it stops charging, and the housing and cooling system are built for rugged environments.

• Overvoltage, overcurrent, short circuit, reverse‑polarity and overtemperature protections.
• Timing charge and overcharge prevention with automatic cutoff at full charge.
• Aluminum alloy casing, forced‑air cooling fan and vortex vents for efficient heat dissipation.
• IP67 ingress rating for dust and temporary water immersion protection in marine and outdoor use.

How do I connect it to my vehicle, boat or battery bank?

Guanlan provides three connector options to suit common setups: an SB-50 Anderson plug, M8 ring/bolt terminals and alligator clips. That flexibility makes it simple to install permanently or use as a portable charging solution.

• SB‑50 Anderson for direct connection to compatible ports on vehicles and vessels.
• M8 terminals for secure, bolt‑on battery connection that can remain in place.
• Alligator clips for temporary or emergency hook‑ups on exposed posts.

Who this charger is for: installers and owners of 24V LiFePO4 systems who need a dependable, fast charger for mobile and stationary applications — RVers, boaters, off‑grid homeowners, fleet operators and anyone using trolling motors or on‑board energy storage. It’s aimed at users who want rapid recharge, robust safety features and multiple hookup options in a dust‑ and water‑resistant package. If you require a high‑current LiFePO4 charger with temperature compensation and a BMS‑wake function for regular or rescue charging, this Guanlan model fits those needs.