7.4V 2600mAh lithium-ion battery is a common and useful battery pack, especially in electronics and hobbyist applications.
| Parameter | Details |
|---|---|
| Voltage | 7.4V nominal (2S = 2 3.7V cells) |
| Max Voltage | 8.4V when fully charged (4.2V 2) |
| Min Safe Voltage | ~6.0V (3.0V per cell) |
| Capacity | 2600mAh = 2.6Ah = 2.6A for 1 hour |
| Energy | ~19.24 Wh (7.4V 2.6Ah) |
| Chemistry | Lithium-Ion (usually 18650 cells) |
RC cars, drones, and helicopters
Airsoft guns
Arduino/Raspberry Pi portable projects
Small robots
DIY electronics
Wireless cameras, LED lights
Most 7.4V 2600mAh Li-ion packs are built from 2x 18650 cells in series (2S1P). Example dimensions:
Size: ~70 38 20 mm (varies by casing and brand)
Weight: ~100120g
Connector: JST, DC plug, or XT60 depending on use
Use a Li-ion charger designed for 2S (7.4V) batteries.
Charge to 8.4V max (dont exceed).
Discharge safely avoid going below 6.0V (or 3.0V per cell).
NEVER short-circuit, puncture, or expose to fire or water.
For best safety, get a pack with a built-in BMS (Battery Management System).





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