Warm Shoe Insoles Battery 3v 5200mAh (AC211)

The AC11NC-3V5200 is 3.7v 5200mAh version of AC211 li ion rechargeable battery pack. Application: heated boot liners, heated insoles cycling, rechargeable battery heater, heated inner soles, electric heated insoles.  The AC211NC 3.7v li ion battery pack is perfect for pushbutton control heated glove like ThermoGloves Rechargeable Heated Gloves. Our AC211DM lightweight but powerful battery would power the ThermoGloves heated gloves warm enough to keep hands toasty on their own. The carbon fiber bundles spreads even heat through each finger and thumb without impacting dexterity, for longger time outdoor use an extra pair of battery would be great. 

Battery Case ID: AC211NC-3V5200
Cell inside: 2pcs li ion 18650 cell 
Capacity: 3.7v 5200mAh
Input:  4.2v 2.5A max
Output: 4.2v~3V 2.5A max, Constant DC.
Dimension: 41.5*73.5*21.5mm 
Input/Ouput Terminal: 3.5*1.35mm coax type, 
Weight: 118g 
Function Code: NC

The AC11NC-3V5200 is made of DLG/HYB/BAK/LS or Samsung/LG 2600mAh 18650 battery. DLG/HYB/BAK/LISHEN are all recognized as China's leading lithium battery companies whos products include cylindrical Li-ion batteries, high rate RC Li-polymer batteries, and energy storage and dynamic LiFePo4 batteries. We use DLG/HYB/BAK/LISHEN cell as a better price option then other global leading brands like Samsung/LG/Panasonic/Sony/Sanyo while it doesnot reduce quality in some applications/cells types. 
Cell options:
Sanyo UR18650FM 2500/2600mAh 
Sanyo UR18650ZY 2450/2550mAh
Samsung ICR18650-26JM 2600mAh  
Samsung ICR18650-26FM 2600mAh  
Samsung ICR18650-26HM 2600mAh  
Molicel ICR18650M 2800mAh  
LG ICR18650B4/B4L 2600mAh
DLG N18650A 2600mAh
HYB ICR18650NQ 2600mAh 
LISHEN LR18650SK 2600mAh 
BAK C18650CC 2600mAh 
BAK H18650CH 2600mAh 

The AC211 battery is designed for electric heated socks, electric heated insole, electric heated glove insole application.  It has small size 41.5*73.5*21.5mm, a 3.5*1.35mm coax type socket connector through extension cable, other connector type can be made same way.
The AC211 battery has no LED light, no button. It is installed protection pcb only. Plug in and the battery will produce output without other operation. It's a very basic battery with best price. 
Typical Capacity Option: 
7.4v 2200mAh/2600mAh/3200mAh/3400mAh
3.7v 4400mAh/5200mAh/6400mAh/6800mAh