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Polymer Li-Ion Battery: 3.7V 40Ah (40A rate, 148Wh) in Plastic Enclosure (12.0)

Your Price: $249.99
In Stock

Product ID # 4130
Part Number:

Lead Time: 5 Business Days

Quantity Discounts

5 to 20$242.49
21 to 50$237.49
51 to 100$232.49
101 or more$224.99


*Important Shipping Regulation This pack is for testing (prototype) only. It has not been UN38.3 tested yet.  Read more...
  • 3.7V 40 Ah pack is made by 10 pcs3.7V 4Ah Polymer Li-Ion cells in parallel connection
  • The battery pack is placed in 10-22 Plastic Enclosure 
  • Two heavy duty binding post are installed in outside box (Red positive )
Voltage 3.7v (working)   4.2 V ( peak)  
Capacity 40 Ah   (148 wh)  
Cycle life >300 
  • Ten  PCB (6.0A limited)installed with battery pack and protects the battery from
    • Over-charge (> 4.2V)
    • Over-discharge ( <2.75V)
    • Over -drain ( > 60 Amp)
    • Short circuits
  • Ten 4.2Amp polyswitch installed in side pack to limit discharging current
  • Charge/ Discharge terminal: Copper Barrel Lug terminal attached via Binding Post
    • Barrel Lug terminal size (LxWxH): 0.6" (14mm) x 0.3" (8.0mm) x 0.04" (1.0mm)
    • Binding Post size (DxL): 0.8" (19mm) x 1.2" (30 mm)
      • Red Binding Post = Positive
      • Black Binding Post = Negative
    • Must use proper AWG wire gauge to match the max discharge current (7.2A), Please click here for American Wire Gauge table and AWG Electrical Current Load Limits table. You may consider to DIY with our wire below.

Max. Discharging Rate 40A Limited by polyswitch
Max Charging rate 10A
Battery's Dimension (LxWxH)
  • 200mm (7.9") x 150mm (5.9") x 75mm (3.0")   
Weight 3.0 lbs 0.6Oz (1380 g)
Smart Tips
  • Please note this battery is for R&D use only and NOT for individual customers. We are not responsible for any damages or losses caused by misuse
  • Please never discharge the battery pack beyond its Max. rating
  • Must read before place an order. 
  • For safety warning please see the link here
  • California residents: Warning: Cancer and Reproductive Harm - See Prop 65 Warnings 
  • Limited Warranty: Repair or exchange only within 30 days.


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