ULTRA POWER 14.6V 4A LiFePO4 Battery Charger — ETL Listed Smart Fanless Unit with 5-LED Status

The ULTRAPOWER 14.6V 4A LiFePO4 Battery Charger is a compact smart charger that safely charges and revives 12.8V (4-cell) LiFePO4 batteries with a four-stage automatic routine and multi-protection features.

This charger is designed to be a reliable everyday power accessory for vehicles and equipment that use 12.8V LiFePO4 deep-cycle batteries: cars, motorcycles, golf trolleys, UAVs, fishing boats and other recreational or utility applications. It supports 100–240VAC input, delivers a regulated 14.6V output at up to 4A, and includes ETL safety certification plus a user-friendly LED status sequence to show charging progress. The unit is fanless for quiet outdoor use and comes with multiple connector options to suit different battery setups.

How does this charger protect my LiFePO4 battery?

The ULTRAPOWER charger uses an integrated management system that applies a controlled four-stage charge to help prevent damage from over- or under-charging. It recognizes battery condition, wakes deeply discharged cells, and automatically stops charging when complete.

• Pre-charge/activation mode to safely revive low-voltage batteries
• Bulk fast charge to restore capacity efficiently
• Constant voltage stage to avoid overcharging at the end of the cycle
• Automatic cut-off to protect battery health and prevent float overcharge

What safety features are built into this model?

The charger includes multiple hardware protections and is ETL listed, offering peace of mind for regular use. Its fanless design reduces moving parts and increases reliability outdoors and in damp environments where splash resistance is beneficial.

• Over-current and over-voltage protection to prevent electrical faults
• Short-circuit and reverse-polarity safeguards for safe connection
• Over-temperature protection to shut down if internal temps rise
• Automatic detection of battery status including BMS-protected packs

Which connectors and indicators make it easy to use?

The charger ships with a choice of three terminal attachments and a SAE quick-disconnect, enabling rapid hookup to a variety of battery setups without extra adapters. A five-LED array gives an instant visual of power and charge percentage so you can monitor progress at a glance.

• Includes 5525 barrel jack, alligator clips, and 6mm ring terminal adapters
• SAE quick-disconnect connector for fast on/off connection
• 5 LEDs show power-on and 25–100% charging stages
• Pocket-sized housing for easy storage and travel

Can this charger restore older or BMS-protected batteries?

Yes — the smart pulsed pre-charge and multi-stage algorithm can reactivate batteries that are deeply discharged or managed by a BMS, provided the battery is physically healthy and within recoverable voltage range. It will attempt to wake the pack and then proceed with regulated charging.

• Pulsing pre-charge to bring very low-voltage cells back online
• Compatible with BMS-equipped LiFePO4 packs that accept an external charge
• Automatically transitions to full charging once safe voltage is reached
• Designed to extend useful lifespan through controlled charging profiles

Who is this for: The ULTRAPOWER 14.6V 4A LiFePO4 charger is a practical choice for owners of 12.8V LiFePO4 battery systems who need a portable, safe and intelligent charger. It's well-suited to boating and fishing enthusiasts, golf cart owners, motorcyclists, UAV operators and anyone maintaining deep-cycle house batteries on small vehicles or off-grid gear. Choose this unit if you want ETL-listed safety, multi-connector convenience, and a fanless, travel-ready design that supports battery longevity and easy monitoring.