For battery cells, review the product description for real-world current recommendations, testing notes, and application guidance. Manufacturer maximum ratings should be treated as limits, not the best target for long-term pack health.
Description
Samsung 50S Battery Cell
High Output Current Cell Power Cell 45A max current basisBuilt for high-current packs where voltage sag, heat, and current sharing matter.
Quick Cell Guide
Power level:
High Output Current Cell
High Output Current Cell
Runtime level:
5000 mAh / 3.6V
5000 mAh / 3.6V
Best use:
Built for high-current packs where voltage sag, heat, and current sharing matter.
Built for high-current packs where voltage sag, heat, and current sharing matter.
Important:
Design with current headroom. Do not build at the edge of the datasheet rating without checking heat, BMS limits, and current sharing.
Design with current headroom. Do not build at the edge of the datasheet rating without checking heat, BMS limits, and current sharing.
Tested by BatteryRealData
BatteryRealData link will be added when public tests are available.
Specifications
| Brand | Samsung |
| Model | INR21700-50S |
| Size / Format | 21700 cylindrical cell |
| Chemistry | Li-ion |
| Rated Capacity | 5000 mAh |
| Nominal Voltage | 3.6V |
| Maximum Charge Voltage | 4.2V |
| Discharge Cutoff Voltage | 2.5V |
| Maximum Charge Current | 10A Max (2C) |
| Maximum Discharge Current | 45A Max (80°C cutoff); 25A no-temp |
| Internal Resistance | ≤14mΩ |
| Weight | 72g |
| Dimensions | Diameter max 21.25mm; height max 70.62mm, with tube |
| Cycle Life | ≥2940mAh after 250 cycles at 25A discharge to 2.5V; ≥2940mAh after 100 cycles at 45A discharge to 2.5V with 80°C cutoff |
Safety Warning
Use only in properly designed battery packs with correct BMS protection, insulation, fusing, current sharing, and thermal management. These are unprotected lithium-ion cells for experienced builders.
Manufacturer maximum ratings are limits, not automatic DIY500AMP recommendations for long-term pack design.
Orders ship from Florida when inventory is available. Lithium-ion cells require proper handling, protected packs, correct chargers, and safe storage. Do not solder directly to battery terminals.
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