11.1V 2600mAh 3 Cell 18650 Lithium Ion Battery Pack - Long Run

In this review of the 11.1V 2600mAh 3 Cell 18650 Lithium Ion Battery Pack, the bottom line is simple: it is a practical, higher-capacity replacement battery for DIY electronics, camera accessories, and small devices that need an 11V to 12V power source. The reviewer found the pack best suited to projects that require robust energy density and built-in protection circuitry, and appreciated the heavy duty wiring and included connectors. If you need a compact pack with protection against overcharge and overdischarge, this pack delivers reliable performance for its price class.

Key Features

• High capacity: The 2600mAh rating provides more usable run time than many bargain packs, making it useful for moderate power draws.
• Integrated protection IC: Built-in circuitry prevents over charge and over discharge, which helps preserve cell health and extends service life.
• 3 x 18650 cell format: Familiar cylindrical cells provide straightforward replacement and predictable voltage behavior for 11.1V systems.
• 2 pin connector and spare: Comes with a pre-tipped female 2POS.100 connector and a loose male connector so users can match device wiring or fit their own connector.
• Heavy duty wiring: The included 18 gauge cable is durable for frequent connections and lowers voltage drop in short runs.
• Compact size: The pack dimensions and modest weight make it easy to integrate into small housings or handheld equipment.

Who It's For

This battery pack is aimed at hobbyists, camera accessory users, and electronics projects that require a compact 11.1V source with higher capacity than typical lightweight packs. The included protection IC and solid wiring make it a sensible choice for people who want a balance of run time and safety without building a custom pack from loose cells.

People who need extremely long runtimes for heavy loads, certified industrial batteries, or hot-swap professional camera solutions may want to look elsewhere. Also, if consistent factory charge state on arrival is critical, note reviewers reported occasional dead-on-arrival units and should test on receipt.

Pros & Cons

Pros

• Higher capacity 2600mAh cells give longer run time than many generic packs.
• Protection IC reduces risk of overcharge and overdischarge, helping battery longevity.
• Includes both pre-wired female connector and a loose male connector for flexible installation.
• Sturdy 18 gauge wiring supports reliable connections and modest current draws.

Cons

• Some customers reported limited battery life or units arriving with no charge, so testing on arrival is advisable.
• Not intended for sustained very high current draw beyond the specified maxs; users should confirm compatibility with their device's peak load.

Specifications

Chemistry	Lithium Ion (Li-Ion)
Capacity	2600 mAh
Nominal Voltage	11.1V
Energy	28.86 Wh
Cell Format	3 x 18650 cylindrical cells
Connector	Female 2POS.100 W/RAMP/RIB plus loose 2 pin male
Dimensions	69mm x 57mm x 18mm (2.72in x 2.2in x 0.71in)

Our Verdict

The 11.1V 2600mAh 3 Cell 18650 pack is a good value for hobbyists and small-device users who need a compact, protected 11V battery with better-than-average capacity. It offers practical safety features and durable wiring at a reasonable price, though buyers should verify charge on arrival and match the pack to their device's peak current needs.

Frequently Asked Questions

Can this pack be charged with a standard 12V Li-ion charger?
Use a charger that supports 3-cell Li-ion packs with a 12.6V charge cutoff and follow the specified charge current limits for safety.

What connector types are included?
The pack ships with a pre-tipped female 2POS.100 connector and a loose 2 pin male connector; the connector on the pack can also be removed to fit a custom plug.

Is the pack protected against overdischarge?
Yes, an installed IC chip prevents over charge and over discharge to help protect cell integrity and prolong life.