Samsung 50S (2) · 21700 · 5000mAh · 25A High-Drain Rechargeable Li-ion Battery
$12.63
- Model: Samsung INR21700-50S (Version 0.2)
- Also known as: 50S(2) / 50S2
- Size: 21700 (Ø 21.25 × 70.62 mm max)
- Nominal Capacity: 5,000 mAh
- Minimum Capacity: 4,800 mAh
- Nominal Voltage: 3.6 V
- Max Continuous Discharge (CDR): 25 A
- Temperature-limited rating: 45 A (with 80 °C cut-off in pack)
- Nominal Impedance: ≤ 14 mΩ (AC, 1 kHz, initial)
- Top Style: Flat Top
- Protected: No (unprotected cell)
- Rechargeable: Yes
In stock
Bulk Discount Pricing
| Quantity | Price |
|---|---|
| 1 - 9 | $12.63 |
| 10 - 49 | $11.37 |
| 50 - 99 | $10.74 |
| 100 - 299 | $10.10 |
| 300+ | $9.47 |
Description
Samsung 50S(2) (INR21700-50S v0.2) · 5,000 mAh · 25 A Unprotected Cell
The Samsung INR21700-50S (Version 0.2, often listed as 50S(2)) is a high-power, high-capacity 21700 cell.
It delivers a nominal 5,000 mAh (minimum 4,800 mAh) with a 25 A continuous discharge rating, and a 45 A temperature-limited capability when the pack enforces an 80 °C cut-off.
A low initial AC impedance (≤ 14 mΩ) helps reduce voltage sag under load.
This is an unprotected flat-top cell intended for use within battery packs or devices that provide appropriate protection (BMS/PCB).
🔋 5,000 mAh nominal capacity
⚡ 25 A continuous discharge
🔥 45 A with pack temp cut-off (80 °C)
🧊 ≤ 14 mΩ nominal impedance (AC, 1 kHz)
Specifications
| Model | INR21700-50S (Version 0.2) |
| Also known as | 50S(2) / 50S2 |
| Format / Size | 21700 — Diameter max 21.25 mm, Height max 70.62 mm |
| Top Style | Flat Top |
| Protected | No (unprotected cell) |
| Rechargeable | Yes |
| Nominal Capacity | 5,000 mAh (min. 4,800 mAh) |
| Nominal Voltage | 3.6 V |
| Max Continuous Discharge | 25 A (surface temperature basis) |
| Temp-limited Rating | 45 A (requires pack 80 °C cut-off, re-enable < 50 °C) |
| Charge Method / Voltage | CCCV — Standard 2.5 A to 4.20 V (250 mA cut-off) · Rated 6 A to 4.20 V (100 mA cut-off) |
| Discharge Cut-off Voltage | 2.5 V (end of discharge) |
| Operating Temperature | Charge 0–60 °C · Discharge −20–80 °C (surface) |
| Nominal Impedance | ≤ 14 mΩ (AC, 1 kHz, after rated charge) |
| Weight | 72.0 g max |
Suitable Replacements / Comparables
- Samsung 40T — 4,000 mAh · 35 A (power-biased)
- Molicel P42A — 4,200 mAh · 45 A (high-drain alternative)
- Molicel P45B — 4,500 mAh · 45 A (power + capacity)
- LG M50LT — 4,900 mAh · ~7 A CDR (capacity-biased)
Download Samsung 50S (v0.2) Datasheet (PDF)
Key specifications taken from Samsung SDI documentation (v0.2).
Key specifications taken from Samsung SDI documentation (v0.2).
IMPORTANT SAFETY NOTICE: This is an unprotected lithium-ion cell.
Use only within a protected battery pack or a device with appropriate protection electronics (BMS/PCB).
Do not use as a standalone cell. Follow safe handling and charging procedures.
Use only within a protected battery pack or a device with appropriate protection electronics (BMS/PCB).
Do not use as a standalone cell. Follow safe handling and charging procedures.
Additional information
| Weight | 0.065 kg |
|---|---|
| Brand | |
| Battery Style | |
| Nominal Voltage | |
| Rechargeable | |
| Protected | |
| Cell Output (A) | 25A |
| Battery Size | |
| Battery Chemistry | NMC |
| Battery Capacity mAh | 5000 |
3 reviews for Samsung 50S (2) · 21700 · 5000mAh · 25A High-Drain Rechargeable Li-ion Battery
Only logged in customers who have purchased this product may leave a review.
Craig Watson –
Finally, a 5000mAh cell with a 25A discharge! Initial testing shows these as something else, can wait to finish my build with them. Excellent technical support!
mps –
Under 80-90w users should consider this battery, can’t beat the 5000mAh. Service was excellent on here.
Sam Turner –
Got a bunch of these to use in my AtomRC Dolphin. 4S1P pack will get an hour flight time. A 2S pack in my Nano Goblin can go 70 mins! Can probably go longer but I only run the packs down to about 3.3v per cell just in case I need some power to abort a landing or whatever. Great cells, very happy with them.