The 3.7V 2600mAh 18650 Lithium Rechargeable Cell from EASTAR® uses the ICR18650 designation ICR identifying cobalt-based lithium-ion chemistry, which prioritises high energy density over the INR nickel-manganese chemistry used in high-discharge cells. At 2600mAh, this is the highest capacity cell in the 18650 range, storing 9.62Wh per cell in the same 18 x 65 mm cylindrical package as the 1200mAh and 2000mAh variants. That extra capacity translates directly into longer runtime at the same current draw without increasing the battery pack size or weight.
The rechargeable lithium batteries suits moderate continuous current applications where runtime matters more than peak discharge rate. Power banks, portable instruments, LED torches, and low-to-medium current robot draw within the ICR cell’s comfortable continuous discharge range. At 200mA continuous draw, a single 2600mAh rechargeable lithium battery runs for approximately 13 hours per charge around 30% longer than a 2000mAh cell and more than double a 1200mAh cell at the same load.
The 2600mAh lithium cell battery charges to 4.2V at full charge using any standard single-cell Li-Ion charger.Building multi-cell series packs with ICR18650 cells requires balance charging each cell must reach exactly 4.2V at the same time, and without balancing, capacity differences between cells cause one cell to overcharge before the others reach full. The 18650 battery 2600mAh suits high-capacity single-cell and multi-cell packs for portable instruments and robot chassis. This cell is working on high-capacity Li-Ion power and battery pack projects. Available on StemVolt.
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Features:
- ICR18650 chemistry optimises energy density for maximum capacity per cell
- 2600mAh per cell gives 30% more runtime than 2000mAh cells at identical loads
- 9.62Wh energy storage per fully charged cell in standard 18650 format body
- 18 x 65 mm dimensions fit all standard 18650 holders and pack configurations
- Cell with consistent capacity labelling across same-batch cells
Technical Specifications:
| Specification | Details |
|---|---|
| Product Type | Lithium-Ion Rechargeable Cell |
| Brand | EASTAR® |
| Form Factor | ICR18650 |
| Nominal Voltage | 3.7V DC |
| Battery Capacity | 2600mAh |
| Dimensions | 18 × 65mm |
| Battery Composition | Lithium-Ion (ICR) |
| Reusability | Rechargeable |
 Applications:
- 3.7V 2600mAh 18650 lithium rechargeable cell makes high-capacity DIY power bank enclosure
- 18650 li ion battery powers portable Raspberry Pi field instrument with extended session runtime
- Rechargeable lithium batteries makes 3S 11.1V high-capacity pack for robot chassis motor
- 2600mAh rechargeable battery powers high-brightness LED torch for extended outdoor operation
- Battery suits matched multi-cell 2S or 3S series pack construction
Package Includes:
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1 x 3.7V 2600mAh 18650 Lithium Rechargeable Cell














Ranganathan Swamy –
Express delivery service from robotics kit store.
Sawant Garg –
Best purchase for projects
Avtar Singh –
Perfect condition on arrival
Digvijay Rathore –
2600mAh 18650 lithium ion cell delivered reliable backup and excellent performance for drone projects.
Amrik Dhillon –
Secure packaging, technical support, and fast delivery made this li ion battery a dependable choice.