Polymer Li-Ion Cell: 3.7V 21Ah (1055275-2C, 77.7Wh, 42A rate) - UL Listed / UN Approved (DGR)

Capacity:  

• Peak: 21000mAh (21Ah) (77wh)
  
• Nominal:   18000mAh  (18Ah) (67wh)
• Internal Resistance:  14 m-ohm

• Energy density: 164 wh/kg (base on nominal capacity)
  

   Please click here to download the Data Sheet.

  UN Certification of Transport of Goods

• You may choose Our smart Li-Ion battery charger to recharge this battery pending on voltage of your pack
• If you DIY by yourself, you MUST install Our PCB or your own PCB with the following feature:
  • 4.2V/cell over-charge protection
  • 2.5V/cell over-discharge protection
  • Max current over-drain protection
  • Short circuit protection.  
• Batteryspace.com won't liable for any mis-use due to any other brand of PCB applied  
• 
  
• The polymer battery is excellent for Notebook, DVD, Bike Light, Camera and Flash-Light power banks
• If you don't know how to make Li-Ion pack, please don't DIY, click here to choose a pre-wired Li-Ion pack module from 3.7V-37V
• Other battery module made by different capacity cell can be found here
• Need UL listed Polymer Li-Ion cells? Please click here to order.

• Li-Ion Batteries may explode if charged or discharged improperly.
• The end user must have the technical knowledge necessary to charge and discharge Li-Ion batteries before making Li-Ion Battery Packs
• You must use a protection IC  ( PCB) to keep the battery and its pack from over charging and over discharging.
• Please read more safety warning about Li-ion battery (lick to link)