Polynaion sodium ion pouch cells for energy storage system
Main Feature of CSiT sodium ion battery pouch:
● Super long cycle life. This pouch type sodium ion battery cell is with at least 6000 times cycle life, suitable for energy storage system to provide long lifespan.
● High safety. The electrode material of sodium-ion batteries has excellent thermal stability, which prevents the battery from catching fire or exploding when facing extreme tests such as overcharging, over-discharging, short circuiting, and puncture. Its thermal runaway temperature is much higher than that of lithium batteries.
● Wide working temperature range. Sodium-ion batteries have excellent wide temperature characteristics and can work normally in extreme environments of -40°C to 80°C while maintaining a high capacity retention rate. Under low temperature conditions, such as -40°C, the capacity retention rate of sodium-ion batteries is 75%.
● Customized. Pouch type of sodium ion battery is easy to customize, we can change the size and capacity according to your request.

Technical Datasheet
Cell Model | CSC-G0C1356-HP37 |
Nominal Voltage | 2.85V |
Nominal Capacity | 37Ah |
Dimension | 356*121*15.5mm |
Inner Resistance | ≤1mΩ |
Weight | Appx.1.1kgs |
Cyle Life | ≥6000 times |
Standard Charge Current | 0.2C(7.4A) |
Standard Discharge Current | 0.2C(7.4A) |
Max Con. Discharge Current | 5C(185A) |
Pulse Discharge Rate | 15C(555A) |
Shape | Soft pouch |
Charge Voltage | 3.95±0.05V |
Dischage Cut-off Voltage | 1.50±0.05V |
Working Voltage Range | 1.50~3.25V |
Charge Method | CC/CV |
-20℃ Capacity retention | ≥90% |
-40℃ Capacity retention | ≥70% |
Charge Temperature | -10~45°C |
Discharge Temperature | -40~60°C |
Storage Temperature | Less than 6 months:-10~30°C; Less than 1 month:-10~40°C |
Product Details
The size details of CSiT 37Ah pouch na-ion cells is as below:

Application
Sodium ion pouch cells can be used for energy storage systems including residential ESS, C&I ESS, AGV, low speed car, e-bike, etc.
