Battery Cells
8 premium cells. Handpicked from 40+ evaluated. Every cell earns its place.
Why Only 8 Cells?
40+
Cells Evaluated
8
Selected Models
100%
Performance Verified
The lithium battery market is flooded with options — and most of them are average. We evaluate 40+ models from top manufacturers. Only 8 make the cut. Each cell we offer has been selected for proven performance, consistent quality, and real-world reliability. Not marketing claims. Not lowest price. Just cells that work.
Our Selection Criteria
Performance
Real tested capacity, cycle life, and discharge performance — not datasheet claims.
Reliability
Consistent quality across production batches. Traceable to production line.
Certification
UN38.3, MSDS, IEC62133, UL, CE. Full compliance documentation ready for your market.
Availability
Stable supply chain. No single-batch scarcity. We commit to consistent delivery.
Selected Cell Cards
Compare the procurement fields buyers usually need before requesting samples or pack matching.
INR18650 High-Drain 2000
- Chemistry: Li-ion INR
- Voltage: 3.6V nominal
- Capacity: 2000mAh
- Discharge: High-rate up to 15C
- Certifications: UN38.3 / IEC62133 / UL / CE
- Applications: Power tool, robotics, high pulse load
INR18650 Balanced 2600
- Chemistry: Li-ion INR
- Voltage: 3.6V nominal
- Capacity: 2600mAh
- Discharge: Standard to mid-rate
- Certifications: UN38.3 / IEC62133 / UL / CE
- Applications: E-bike, instrument pack, portable devices
INR18650 Energy 3000
- Chemistry: Li-ion INR
- Voltage: 3.6V nominal
- Capacity: 3000mAh
- Discharge: Standard 3C-5C options
- Certifications: UN38.3 / IEC62133 / UL / CE
- Applications: Medical, consumer electronics, backup power
INR18650 Max Energy 3350
- Chemistry: Li-ion INR
- Voltage: 3.6V nominal
- Capacity: 3350mAh
- Discharge: Standard 3C
- Certifications: UN38.3 / IEC62133 / UL / CE
- Applications: Medical, IoT, low-drain long runtime
INR21700 High-Power 3000
- Chemistry: Li-ion INR
- Voltage: 3.6V nominal
- Capacity: 3000mAh
- Discharge: High-rate up to 10C
- Certifications: UN38.3 / IEC62133 / UL / CE
- Applications: AGV, robotics, high-power tools
INR21700 Balanced 4000
- Chemistry: Li-ion INR
- Voltage: 3.6V nominal
- Capacity: 4000mAh
- Discharge: Mid-rate 5C
- Certifications: UN38.3 / IEC62133 / UL / CE
- Applications: Light EV, e-bike, portable power
INR21700 Energy 4500
- Chemistry: Li-ion INR
- Voltage: 3.6V nominal
- Capacity: 4500mAh
- Discharge: Standard to mid-rate
- Certifications: UN38.3 / IEC62133 / UL / CE
- Applications: ESS module, portable station, AGV runtime pack
INR21700 Max Energy 5000
- Chemistry: Li-ion INR
- Voltage: 3.6V nominal
- Capacity: 5000mAh
- Discharge: Standard 3C
- Certifications: UN38.3 / IEC62133 / UL / CE
- Applications: ESS, e-bike range pack, portable power
18650 vs 21700 Selection Guide
| Buyer question | Use 18650 when… | Use 21700 when… |
|---|---|---|
| Pack space | The enclosure is narrow or already designed around 18mm cells. | The pack can accept 21mm cells and fewer parallel groups. |
| Runtime target | Runtime is moderate and pack geometry needs flexible tuning. | Higher Wh per cell reduces cell count and assembly complexity. |
| Power target | High-rate 10C-15C 18650 cells fit tool and pulse-load packs. | 7C-10C 21700 cells fit AGV, robotics, and light EV drive loads. |
| Typical shortlist | 2000mAh 15C, 2500mAh 10C, 2600-3350mAh energy cells. | 3000mAh 10C, 4000mAh 7C, 5000mAh energy cells. |
Need Help Selecting a Cell?
Our engineers can help you match the right cell to your application.
Selection Rationale: Why These 8 Cells
Every cell in our catalog has a specific reason for being here. We don’t add cells to look comprehensive. We add cells because they solve real application problems — and because their manufacturers have demonstrated consistent quality and reliable supply. Here’s what we look for.
Applications at a Glance
Our 8 cells cover the full spectrum of common lithium battery applications.
18650 Series
From 2000mAh high-drain (15C) to 3350mAh high-energy (3C). Covers power tools, e-bikes, medical devices, and consumer electronics. Four selected models covering the core performance range.
21700 Series
Higher energy density in a larger format. From 3000mAh high-power (10C) to 5000mAh high-capacity (3C). Ideal for energy storage, portable power stations, AGVs, and light EVs.