The EVE 46950: A Powerhouse Cylindrical Cell for Next-Generation Applications

• Model:​​ EVE 46950 Specifically 2x G13 INR4695P and 2x G16 INR4695E
• ​Nominal Voltage:​​ 3.7V
• ​Rated Capacity:​​ 31.9Ah (at 0.5C discharge)
• ​Gravimetric Energy Density:​​ 212 Wh/kg
• ​Chemistry:​​ Lithium Nickel Manganese Cobalt Oxide (NMC)
• ​Dimensions:​​ 46mm in diameter x 95mm in height
• ​Approximate Weight:​​ 555 grams
• ​Standard Charge:​​ 0.5C constant current to 4.2V; then constant voltage until current drops to 0.05C
• ​Fast Charge Capability:​​ Capable of charging at 1C
• ​Continuous Discharge Rate:​​ 3C (capable of delivering ~95A continuously)
• ​Cycle Life:​​ Typically 1,000+ cycles (to 80% of original capacity, under standard conditions)
  

The Significance of the 46950 Form Factor​
The "46950" designation is more than just a model number; it represents a strategic move towards standardizing a larger, more powerful cylindrical cell. Compared to the ubiquitous 18650 (18mm x 65mm) and the popular 21700 (21mm x 70mm) cells, the 46950's substantial size provides a significant leap in capacity per cell.

This larger format offers distinct advantages for battery pack designers:

• Reduced Part Count:​​ Fewer cells are needed to achieve the same total pack voltage and capacity, simplifying the Battery Management System (BMS) and structural components.
• ​Increased Pack Efficiency:​​ With fewer welds and connections, overall pack resistance can be lower, potentially improving efficiency and thermal management.
• ​Structural Rigidity:​​ The cell's robust cylindrical casing can contribute to the structural integrity of the battery pack—a critical factor in electric vehicle (EV) design.

​Performance and Chemistry: The NMC Advantage​
The EVE 46950 utilizes an NMC chemistry, which strikes an excellent balance between energy density, power output, and cycle life. This makes it a versatile choice for a wide range of applications. With a high nominal capacity of 31.9Ah and a respectable continuous discharge rate of 3C, this cell can provide both sustained energy delivery and high bursts of power when needed. Its high energy density (around 212 Wh/kg) is a key metric, enabling the design of lighter and more compact energy storage systems without compromising on runtime or power.

​Target Applications​
The combination of high energy, robust power output, and a scalable form factor makes the EVE 46950 ideal for several high-demand sectors:

• ​Electric Vehicles (EVs):​​ Particularly electric cars, trucks, and buses, where high energy density and power are paramount for range and acceleration.
• ​Commercial & Industrial Energy Storage Systems (ESS):​​ For large-scale solar and wind energy storage, grid stabilization, and backup power systems.
• ​Material Handling Equipment:​​ Electric forklifts, pallet jacks, and automated guided vehicles (AGVs) that require reliable, long-lasting power.
• ​Marine and RV Applications:​​ Powering electric boat propulsion systems and providing house battery power for recreational vehicles.

The EVE 46950 3.7V 31.9Ah NMC cylindrical cell is a significant product that embodies the current trends in lithium-ion battery technology. By offering a high-capacity, large-format solution with balanced performance characteristics, it provides engineers and designers with a powerful building block for the next generation of electric transportation and stationary storage solutions. As the industry continues to consolidate around this and similar form factors, the EVE 46950 Specifically 2x G13 INR4695P and 2x G16 INR4695E is poised to be a key enabler of a more electrified and sustainable future.

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