Περιγραφή
18650 Rechargeable Li-ion Battery 3.7V 66600mAh Ultra High Capacity, 2000 Cycles Long Lifespan, Flat Top Design, for Flashlights/Power Tools
🔋 Core Product Parameters
Model: 18650 Li-ion Battery (Flat Top Design)
Rated Voltage: 3.7V (Charge Voltage 4.2V)
Rated Capacity: 66600mAh (Ultra High Capacity)
Dimensions: 18mm×65mm (Standard 18650 Size)
Cycle Life: ≥2000 cycles (Capacity Retention ≥80%)
Operating Temperature: 0°C to 50°C
⭐ Core Advantages of Li-ion Batteries
✔ Compact and Lightweight – High energy density, excellent portability
✔ No Memory Effect – Charge anytime without full discharge
✔ Eco-Friendly and Safe – RoHS compliant, pollution-free
✔ Low Self-Discharge – <3% monthly self-discharge, long storage life
⚡ Usage Precautions
① Charging Requirements: Use dedicated 4.2V Li-ion battery charger
② Discharge Protection: Protected by PCB against over-discharge (≥2.5V)
③ Prohibited Actions: Do not disassemble, short-circuit, or incinerate
④ Temperature Management: Operate within 0-50°C, avoid high temperatures
⑤ Storage Advice: Store in cool, dry place away from metal objects
🏭 Compatible Devices
• High-power flashlights, headlamps, searchlights
• Power tools (electric drills, saws, angle grinders)
• Emergency power supplies, energy storage devices
• Electronic DIY projects, experimental equipment













