Samsung SDI high-capacity 18650 cell
The Samsung INR18650-35E is a proven 3,500mAh-class lithium-ion cell for battery packs that prioritize energy capacity and dependable moderate-current performance. Order loose cells in volume, or let United Lithium Solutions turn them into a project-ready solution.
The 35E balances high energy density with a practical continuous-current rating, making it a strong choice when range and runtime matter more than extreme peak power.
A 3,500mAh-class 18650 format helps maximize watt-hours in space-conscious battery designs.
Built by Samsung SDI for professionally engineered lithium-ion battery systems.
ULS can supply the cell and support the tabs, insulation, wiring, connectors and complete pack build.
See the Samsung 35E and Samsung 50S tested by United Lithium Solutions for a practical look at the tradeoff between range-focused capacity and higher-power performance.
Test results shown are from the demonstrated samples and conditions. Actual performance varies with pack design, load, temperature, age and test method.
Need more than a carton of cells? Tell us your voltage, capacity, current, dimensions and connector requirements. Our Las Vegas team can help turn the 35E into a production-ready battery solution.
Tab patterns and interconnect options for your pack layout.
Connector, lead and harness support based on your application.
Positive-terminal rings and electrical insulation components.
18650 pack design and assembly for qualified projects.
Protection and BMS options matched to the intended pack design.
Volume support for builders, dealers, repair centers and OEM programs.
Core values below are based on Samsung SDI INR18650-35E product specifications. Confirm the model, revision and lot documentation for commercial qualification.
| Cell format | 18650 cylindrical lithium-ion cell |
|---|---|
| Capacity class | 3,500mAh class |
| Standard discharge capacity | 3,350mAh minimum under manufacturer test conditions |
| Nominal voltage | 3.60V |
| Charge voltage | 4.20V |
| Standard charge current | 1.70A |
| Maximum charge current | 2.00A, not for cycle-life testing |
| Maximum continuous discharge | 8.00A |
| Maximum discharge, not continuous | 13.00A; manufacturer does not define this as a continuous rating |
| Discharge cut-off voltage | 2.65V for the referenced standard 35E specification |
| Maximum dimensions | 18.55mm diameter x 65.25mm height |
| Maximum cell weight | 50g |
| Terminal / protection | Flat top / unprotected |
The 13A value is not a continuous-current rating and should not be treated as one. Cell specifications can vary by approved revision and manufacturing lot. The battery pack designer is responsible for appropriate protection, thermal management, spacing, fusing and BMS settings.
Request the applicable document set for the exact Samsung 35E model and lot being quoted. Public download links can be added after the files are approved and marked as ULS reference copies.
This is an unprotected industrial cell, not a finished consumer battery.
Use only in a properly engineered battery pack with a compatible BMS or protection circuit, adequate insulation, current protection and thermal management. Never carry or store loose cells where metal objects can short the terminals. Do not use a cell with a damaged wrap, dent, leak, corrosion or abnormal heat. Do not exceed manufacturer ratings.
Send your quantity, voltage, capacity, maximum continuous current, dimensions and connector requirements. United Lithium Solutions will review the project and recommend the right supply or build option.
