Samsung INR21700-50S 5000mAh 45A 21700 Li-Ion Cell
SKU SAMSUNG-INR21700-50S
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Product details
The Samsung INR21700-50S is a high-drain 21700 lithium-ion cell that pairs 5000mAh capacity with a 45 A discharge rating, suited to building long-range FPV, fixed-wing and UAV packs where endurance matters more than burst power. It is a flat-top, unprotected cell intended for spot-welded pack building.
Key features
- 5000mAh at 3.6 V nominal, 18 Wh per cell
- Continuous discharge of 25 A with no temperature cut-off, or 45 A when the cell is allowed to reach an 80°C cut-off
- Charges to 4.2 V; discharge cut-off 2.5 V
- Flat-top terminal and no protection circuit, ready for nickel-strip spot welding
Specifications
- Model: INR21700-50S
- Format: 21700 cylindrical
- Chemistry: Li-ion
- Nominal capacity: 5000mAh
- Nominal voltage: 3.6 V
- Charge voltage: 4.2 V
- Discharge cut-off: 2.5 V
- Continuous discharge: 25 A (no temperature cut-off) / 45 A (80°C cut-off)
- Dimensions: approx. 20.45 x 70.55 mm
- Weight: approx. 72 g
Pack sizing: six of these in 6S1P give 21.6 V nominal and 5000mAh (108 Wh), and 6S2P doubles that to 10000mAh. For sustained loads, plan around the 25 A figure rather than 45 A, and never solder directly to the cell; spot-weld nickel strip or use a cell holder.
| Cell Count | 1S |
|---|---|
| Chemistry | Li-ion |
| Capacity | 5000 mAh |
| C-Rating | 9 C |
| Cell Format | 21700 |
| Made in India | No |
| Brand | Samsung |
| Weight | 72 g |
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