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
Amprius SA112 21700 Cell – 6500mAh – High-Energy Lithium-Ion Battery - Check availability
Continuous discharge: 2A
The Amprius SA112 is a SiCore high-energy 21700 cylindrical lithium-ion cell rated at 6500mAh and 22.5Wh, built for applications that prioritize runtime, energy density, and pack-level efficiency.
Amprius lists the SA112 at 315Wh/kg and 860Wh/L, while the formal specification gives 3.46V nominal voltage, 4.20V charging voltage, and 2.0C (13A) maximum continuous discharge.
The SA112 specification also defines 0.5C standard CC/CV charging, 0.7C maximum charge current, and a cycle-life requirement of greater than 80% of first-cycle capacity at the 700th cycle under the stated test profile.
Specifications:
| Model | Amprius SA112 |
| Size | 21700 |
| Typical Capacity | 6500mAh |
| Minimum Capacity | 6350mAh |
| Nominal Energy | 22.5Wh |
| Nominal Voltage | 3.46V |
| Charging Voltage | 4.20V |
| Over Voltage Threshold | 4.23V |
| End of Discharge Voltage | 2.50V |
| Under Voltage Threshold | 2.20V |
| Standard Charge Method | 0.5C (3250mA) CC/CV to 4.20V, 0.02C (130mA) charge termination |
| Typical Charge Current | 0.5C (3250mA) |
| Maximum Charge Current | 0.7C (4550mA) |
| Max Charge Current vs Temperature | No charge below 0°C; 0.1C (600mA) at 0–5°C; 0.5C (3250mA) at 5–15°C; 0.7C (4550mA) at 15–60°C; no charge above 60°C |
| Standard Discharge Method | 1.0C (6500mA) continuous to 2.50V |
| Typical Discharge Current | 1.0C (6500mA) |
| Maximum Continuous Discharge | 2.0C (13000mA) |
| Chemistry | Lithium-ion |
| Rechargeable | Yes |
| ACIR | ≤18mΩ fresh cell, 1kHz @ 30% SOC |
| Approx. Weight | 72g ±2g |
| Dimensions | 21.50mm diameter × 70.75mm length |
| Gravimetric Energy Density | 315Wh/kg |
| Volumetric Energy Density | 860Wh/L |
| Operating Temperature | Charge: 0°C to 45°C / Discharge: -20°C to 60°C |
| Max Cell Skin Temperature | Charge: 60°C / Discharge: 70°C |
| Storage Condition | -20°C to 25°C for 12 months; -20°C to 45°C for 3 months; -20°C to 60°C for 1 month |
| Shipping OCV | 3.40V to 3.50V fresh cell @ 30% SoC max |
| Cycle Life | >80% of first-cycle capacity at the 700th cycle under the stated 0.5C charge / 1.15C discharge test profile |
| Special Note | Cell contains a CID (Current Interruption Device) |
| Datasheet | Datasheet |
Applications:
- ✅ Long-Range E-Bikes
- ✅ Energy Storage Modules
- ✅ Portable Power Stations
- ✅ Solar Backup Battery Packs
- ✅ Endurance-Focused Custom Builds
High-Energy 21700 Silicon-Anode Performance
⚠️ Safety Warning for Lithium-Ion Battery Usage
This is a rechargeable lithium-ion cell and must be handled using appropriate charging controls, pack protection, and thermal management. Overcharging, short-circuiting, crushing, puncture, overheating, or physical damage can cause fire, burns, or serious injury.
Observe the published limits for 4.20V maximum charge voltage, 2.50V normal discharge cut-off, and the stated charge/discharge temperature ranges. Stop using the cell if the wrapper, can, or terminals are damaged.
Important Usage Guidelines:
- Use Only with a Compatible Li-Ion Charger / BMS
- Do Not Exceed 4.20V Charging Voltage
- Do Not Discharge Below 2.50V in Normal Use
- Observe Charge and Discharge Temperature Limits
- Spot Weld Only – Do Not Solder Directly
- Do Not Use if the Cell Wrap or Can Is Damaged
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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