Technical Specifications:

• Chemistry: Li-pol

• Nominal Voltage: 3.7V

• Nominal Capacity: 155mAh

• Nominal Energy: 2.22Wh

• Max Charge Voltage: 4.2V

• Discharge cut off voltage: 2.8V

• Discharging temperature: -20~60℃

• Dimension: about 5 × 21× 28 mm *4pcs

• Weight: about 20g 

This 3.7V Li-polymer battery pack adopts a 1S4P parallel configuration with standard 402025 cells, delivering a total capacity of 620mAh (155mAh per cell) and rated power of 2.22Wh. Designed with a segmented, flexible form factor, it perfectly fits compact devices with irregular internal spaces, turning "dead corners" into usable power storage.

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About US:

Shenzhen BAKTH Technology Co., Ltd. was established in 2002. For 21 years, it has been dedicated to battery pack assembly and PCM/BMS design and production. It has a 5,000-square-meter self-owned factory equipped with automated production lines and SMT assembly lines.

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• Certificates:
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• FAQ:
• 1. What kind of certificate your battery pack owned?
  Re: ISO9001, ISO14001, UL, BIS, KC, USTC, CE, CB, our battery pack have reliable quality assurance.
  
  2. Do you have MOQ?
  Re: No limitation, we will check the best price for you based on your order quantity. We warmly welcome sample order to test our quality before bulk order.
  
  3. What’s the warranty? How can we guarantee quality?
  Re: Normally will be 12 months, for some special products can be further negotiated accordingly. A complete production process to ensure the quality before shipment.
   
• 4. What’s the lead time?
  Re: Standard products: sample order will be 3~4 weeks based on the battery cell in stock, 5~8 weeks for bulk order according to different models and quantity.
  
  5. Can we have our own Logo on the battery pack? Can you accept customized battery?
  Re: Yes, of course. BAKTH Technology has professional R&D team which could provide you the most suitable solution according to your requirements. Customized battery requirements are warmly welcomed!