Samsung INR21700-50S 5000mAh - 35A Battery
The Samsung INR21700-50S is a high-performance 21700 form factor lithium-ion battery that combines a large nominal capacity of 5000mAh with a high continuous discharge current of 35A. Thanks to its larger physical dimensions compared to standard 18650 cells (21.25 mm diameter, 70.62 mm length), this cell provides increased energy density and longer operating time in powerful devices — drones, power tools, and other high-power-consumption gadgets.
Key electrical parameters: nominal capacity 5000mAh (minimum capacity 4800mAh), nominal voltage 3.6 V, full charge voltage 4.2 V, and full discharge voltage 2.5 V. The maximum continuous discharge current is 35A, and the peak discharge current can reach 45A when heated to 80°C. The maximum charging current is 6A. The battery does not have a built-in protection board (unprotected), so when used in assemblies or battery packs, external protection solutions or a BMS must be provided.
| Specifications | Description |
|---|---|
| Manufacturer | Samsung |
| Cell type | Lithium-ion, INR |
| Size | 21700 |
| Nominal capacity | 5000mAh |
| Minimum capacity | 4800mAh |
| Unprotected | Yes (no built-in protection board) |
| Nominal voltage | 3.6 V |
| Full charge voltage | 4.2 V |
| Full discharge voltage | 2.5 V |
| Maximum continuous discharge current | 35A; peak discharge current: 45A (when heated to 80°C) |
| Maximum charging current | 6A |
| Internal resistance | Batteries for drones. Manufacturer: Samsung. Cell type: INR, size 21700. Weight of one battery — 72 g; dimensions: diameter 21.25 mm, length 70.62 mm. |
This cell is important for applications requiring high capacity and stable current output. The weight of one battery is about 72 g, which must be considered when planning drone payload capacity and flight time. The 21700 form factor offers an advantage in energy density and better heat dissipation than 18650.
Operating recommendations: use reliable chargers with current control (do not exceed 6A during charging), install external protection or a BMS in battery packs, avoid prolonged peak loads without cooling, and monitor temperature during intensive use. Due to the lack of a built-in protection board, this cell is suitable for battery pack assembly by experienced users and in professional builds.
- Compatibility: drones, quadcopters, power tools, and portable devices with high power consumption.
- Advantages: large capacity 5000mAh, high continuous discharge current 35A, renowned manufacturer Samsung.
- Feature: 21700 size provides higher energy density compared to 18650.
By choosing the Samsung INR21700-50S 5000mAh - 35A, you get a modern cell with high characteristics for intensive applications, but remember the need for protection when assembling battery packs.
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