About Payment 
 Shipping & Cost
 Battery SDS
 Battery Terminology
 Battery Knowledge
Privacy Policy
 Export restrictions


Shopper Award
Security Verified Seal

Li-Ion 21700 Battery: 10.95V 4000mAh (43.8Wh, 7A rate, 3E/E)

Your Price: $98.00
In Stock

Product ID # 11501
Part Number:

*Important Shipping Regulation This pack is for testing (prototype) only. It has not been UN38.3 tested yet.  Read more...
  • Li-Ion 10.95V 4000mAh battery pack is build by 3pcs LC-21700, 3S
  • Wrapped by black thin PVC inside
Voltage Nominal Voltage: 10.95V
Charge Cut off Voltage: 12.6V
Discharge Cut off Voltage: 8.25V
Capacity Nominal: 4000 mAh; Minimum: 3900mAh
  • 1x 7A polyswitch
  • 1x PCB(7A)installed with the battery pack and protects the battery from
    • Over charge, Over discharge, Over current. Short circuits
Terminal Options 6" 22AWG open wire
Charge Current Standard: 2000mA; Max: ≤2000mA
Discharge Current ≤7Amp limit by PCB
Dimensions (LxD)

215 x 25mm  (8.5" x 1" )

Weight 7.8oz (220g)
Operation Temperature
(Cell Surface Temperature)
  • Charge: 0°C (32°F) ~  45 °C (113°F)
  • Discharge: - 20°C (-4°F) ~ 60 °C (140°F)
Storage Temperature
  • 1 month: -20°C (32°F) ~ 60°C (140°F)
  • 3 month: -20°C (32°F) ~ 45°C (113°F)
  • 1 year: -20°C (32°F) ~ 20'°C (68°F)
Related Products

You can use our smart charger to charge this battery, setting at output 12.6V, ≤2000mA

  • Li-Ion battery may explode if misused. We are not responsible for any damages or losses caused by misuse (including but not limited to: over charge, over discharge, any changes to this battery pack, disassemble battery pack).
  • Always charge battery with attention.  Battery pack shall be put in a fireproof place to avoid any accidents.
  • Please check battery polarity before connecting to device.
  • For safety warning please see the link here
  • California residents: Warning: Cancer and Reproductive Harm - See Prop 65 Warning

Product Reviews

(0 Ratings, 0 Reviews)
What to consider when designing Lithium Batteries?
Bluetooth Technology for Lithium-ion/LiFePO4 Batteries
UN 38.3 Safety Test

We own a national standard UN38.3 testing lab. We can provide UN38.3 test service to our customer.

If you want to set up your own lab, we also provide UN38.3 & IEC62133 equipments and onsite training. Email us for the quote and lead time.
Lithium Battery Shipping Regulation
Recommendations on How to get ≤30% Rated Capacity for Shipping
Thermal Abuse Test for IEC62133
Mailing Lists