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LiFePO4 Smart Charger - 3.65V 500mA for AA 14500 & AAA 10440 Li-Fe Batteries

Professional smart charger specifically designed for LiFePO4 (Lithium Iron Phosphate) AA 14500 and AAA 10440 batteries. Features intelligent charging with 3.65V output, 250mA-500mA charging current, LED status indicators, and automatic stop function. Supports charging 1 or 2 Li-Fe cells simultaneously. Universal input voltage (100-240V AC) with four plug types (US, EU, UK, AU) for worldwide use. Safe, reliable, and perfect for LiFePO4 rechargeable batteries.

Key Features

LiFePO4 Specific: 3.65V charging voltage for Li-Fe batteries
Dual Slot Design: Charge 1 or 2 batteries simultaneously
Smart Charging: 250mA-500mA intelligent current control
LED Indicators: Red (charging) / Green (fully charged)
Auto-Stop Function: Prevents overcharging
Universal Input: AC 100-240V for worldwide use
Four Plug Types: US, EU, UK, AU
Compact & Lightweight: Only 100g, easy to carry

Package Contents

1× LiFePO4 Smart Charger (plug type as selected)

Technical Specifications

Input Voltage	AC 100-240V 50/60Hz
Output Voltage	DC 3.65V (for LiFePO4)
Charging Current	250mA-500mA (intelligent)
Number of Slots	2 (charge 1 or 2 batteries)
Compatible Batteries	LiFePO4 AA 14500, AAA 10440
Battery Chemistry	LiFePO4 (Li-Fe) ONLY
LED Indicators	Red (charging) / Green (fully charged)
Auto-Stop	Yes - prevents overcharging
Weight	~100g
Protection Features	Overcharge, Overcurrent, Short Circuit
Certification	CE, RoHS compliant
Condition	Brand New

Plug Type Options

Plug Type	Input Voltage	Regions
US Plug	AC 100-240V	United States, Canada, Mexico, Japan
EU Plug	AC 100-240V	Europe (except UK), Asia, Middle East
UK Plug	AC 100-240V	United Kingdom, Ireland, Hong Kong, Singapore
AU Plug	AC 100-240V	Australia, New Zealand, China, Argentina

Compatible LiFePO4 Batteries

AA 14500: LiFePO4 AA size (14mm × 50mm) rechargeable batteries
AAA 10440: LiFePO4 AAA size (10mm × 44mm) rechargeable batteries
Voltage: 3.2V nominal (3.65V max charge)
Note: Do NOT use with Li-ion (3.7V) or NiMH batteries

LED Indicator Status

LED Color	Status	Action
Red Light	Charging in progress	Wait for charging to complete
Green Light	Fully charged	Remove battery, charging complete
No Light	No battery or no power	Insert battery or check power

Step-by-Step Charging Instructions

✅ Follow These Steps for Safe Charging

Step 1: Verify Battery Type

CRITICAL: Only use LiFePO4 (Li-Fe) 3.2V batteries
Compatible: AA 14500 or AAA 10440 LiFePO4 batteries
Do NOT use Li-ion 3.7V batteries (will overcharge)
Do NOT use NiMH or NiCd batteries

Step 2: Connect Power

Plug the charger into AC power outlet (100-240V)
Ensure the plug type matches your region
Charger is ready when powered

Step 3: Insert Batteries

Insert 1 or 2 LiFePO4 batteries into the slots
Ensure correct polarity (+ and - markings)
Batteries should fit snugly in the slots
Red LED should illuminate, indicating charging has started

Step 4: Monitor Charging

Red LED indicates charging in progress
Typical charging time: 2-4 hours depending on battery capacity
Do not disturb batteries during charging
Charger may be slightly warm (normal)

Step 5: Charging Complete

Green LED indicates fully charged
Charger automatically stops charging (auto-stop function)
Safe to leave batteries in charger
For optimal battery life, remove within a few hours

Step 6: Remove Batteries

Remove fully charged batteries from charger
Store batteries in cool, dry place
Unplug charger when not in use

Important Safety Guidelines

⚠️ CRITICAL SAFETY WARNINGS

Before Charging:

❌ NEVER charge Li-ion 3.7V batteries with this charger
❌ Do NOT use with NiMH or NiCd batteries
❌ Only use LiFePO4 (Li-Fe) 3.2V batteries
❌ Do not charge damaged, swollen, or leaking batteries
✅ Verify batteries are LiFePO4 AA 14500 or AAA 10440
✅ Check battery polarity before inserting

During Charging:

❌ Never leave charging batteries completely unattended
❌ Do not charge near flammable materials
❌ Do not cover the charger or block ventilation
✅ Charge in well-ventilated area at room temperature
✅ Place on stable, non-flammable surface
✅ Keep away from children and pets

Battery Care Tips:

Charge LiFePO4 batteries before they are completely depleted
Store at 40-60% charge for long-term storage
Charge at least once every 3 months during storage
Do not store batteries in charger for extended periods

Why Choose LiFePO4 Batteries?

LiFePO4 vs Li-ion Comparison:

Safety: LiFePO4 is the safest lithium chemistry
Lifespan: 2000+ cycles vs 500-800 for Li-ion
Stability: Excellent thermal stability, no thermal runaway
Voltage: 3.2V nominal (vs 3.7V for Li-ion)
Requires specific charger: This 3.65V charger is designed for LiFePO4

Why This Charger?

1. LiFePO4 Specific:

3.65V charging voltage perfect for LiFePO4
Will not work with Li-ion batteries (different voltage)
Optimized for Li-Fe battery chemistry

2. Smart Charging:

Intelligent 250mA-500mA current control
Auto-stop prevents overcharging
LED indicators show charging status

3. Dual Slot Convenience:

Charge 1 or 2 batteries simultaneously
Independent charging circuits
Saves time

4. Universal Compatibility:

100-240V input works worldwide
Four plug types available
Perfect for travel

5. Compact & Portable:

Only 100g - lightweight
Compact design
Easy to carry

Safety Certifications

This charger meets international safety standards including CE and RoHS compliance, ensuring safe and reliable charging for your LiFePO4 batteries.

Warranty & Support

We stand behind the quality of our products. If you experience any issues with the charger, please contact us for support. Always use only LiFePO4 batteries and follow all safety guidelines.