Key Features
- 6500mAh High Capacity: More energy per cell means longer runtimes and fewer cells needed to hit your pack targets — a genuine advantage in weight-sensitive builds.
- High-Output Performance: 26A continuous discharge gives the M65A real-world power capability that goes well beyond what most high-energy cells can sustain.
- Exceptional Energy Density: At 322 Wh/kg gravimetric and 943 Wh/L volumetric energy density, this is one of the most energy-dense 21700 cells you can put in a pack.
- Low Impedance Design: AC impedance under 14.5mΩ keeps voltage sag controlled and heat generation minimal, even under sustained discharge conditions.
- Professional Integration Cell: Unprotected flat-top format means your BMS is in charge — exactly how a serious pack build should work.
Overview
If your build lives and dies by energy density, the Molicel INR-21700-M65A deserves a hard look. With a typical capacity of 6500mAh and gravimetric energy density of 322 Wh/kg, it pushes the boundaries of what a cylindrical 21700 cell can store in a 74.5g package. The 943 Wh/L volumetric density means you're packing serious energy into every cubic centimetre of your pack. What makes the M65A more than just a high-capacity cell is its ability to back that energy up with a 26A continuous discharge rating — strong performance for a cell in this class. A wide discharge temperature range of -30°C to 60°C adds real-world versatility for applications that operate across changing environmental conditions. As with any unprotected lithium-ion cell, the M65A is designed for use within a professionally engineered battery pack incorporating a suitable BMS and thermal management system. Manufactured by E-One Moli Energy, Molicel's INR-21700-M65A is a cell built to perform where energy density matters most.
Applications / Uses
- Electric vehicles and e-mobility platforms where maximizing range per kilogram is a core design goal
- Custom and professional battery pack builds prioritizing energy density and per-cell capacity
- High-capacity power tool and heavy-duty equipment packs requiring extended runtime between charges
- Robotics and UAV systems that benefit from the M65A's strong capacity-to-weight ratio
- Portable energy storage and backup power applications needing maximum runtime in a compact form factor
Specifications
| Brand: | Molicel |
| Model: | INR-21700-M65A |
| Battery Type: | 21700 Lithium-Ion (INR) |
| Typical Capacity: | 6500mAh (23.4Wh) |
| Minimum Capacity: | 6400mAh (23.0Wh) |
| Nominal Voltage: | 3.6V |
| Full Charge Voltage: | 4.2V |
| Discharge Cutoff Voltage: | 2.5V |
| Max Continuous Discharge: | 26A (90°C surface cut-off) |
| Standard Charge Current: | 6.5A |
| Standard Charge Time: | 1.75 hours |
| AC Impedance (30% SOC): | ≤14.5mΩ |
| DC Impedance (50% SOC): | ≤25mΩ |
| Gravimetric Energy Density: | 322 Wh/kg |
| Volumetric Energy Density: | 943 Wh/L |
| Charge Temperature: | 0°C to 60°C |
| Discharge Temperature: | -30°C to 60°C |
| Shape: | Cylindrical |
| Can Material: | Steel |
| Battery Top: | Flat Top |
| Protected: | No |
| Diameter: | 21.70mm (Max) |
| Height: | 71.00mm (Max) |
| Weight: | 74.5g (Max) |