The GH 18650 6800 mAh 3.7 V is a type of lithium-ion rechargeable battery that uses the 18650 form factor (meaning it is roughly 18 mm in diameter and 65 mm in length).
Here’s a quick breakdown:
1. Type & Voltage
Chemistry: Lithium-ion (Li-ion)
Nominal Voltage: 3.7 V (fully charged ~4.2 V, fully discharged ~3.0 V)
Rechargeable: Yes
2. Capacity
Claimed Capacity: 6800 mAh
Realistic Capacity: In many cases, these “6800 mAh” 18650 cells from generic brands often have much lower true capacity (usually 2000–3000 mAh). The printed number can be misleading, so testing with a battery analyzer is recommended.
3. Applications
Used in:
Flashlights
DIY electronics projects
Power banks
RC toys and robotics
Backup power for IoT devices
4. Charging
Charger Type: Li-ion charger with CC/CV (constant current/constant voltage) profile
Charging Voltage: 4.2 V max
Charging Current: Recommended ≤0.5–1 C (so for a true 2500 mAh cell, around 1.25–2.5 A)
5. Safety Notes
Never overcharge (>4.2 V) or over-discharge (<2.5–3.0 V)
Avoid short-circuiting
Use with proper battery management systems (BMS) if in packs
Store in cool, dry place