TLife 18650B 2200mAh (Green)

Button top and flat top unprotected TLife 2200mAh cells.

TLife 18650B BT 2200mAh (Green)



Official specifications:

• Model: 18650B
• Battery Type: Lithium-ion
• Rechargeable: Yes
• Protected: Yes
• Positive terminal style: Button-top
• Nominal voltage: 3.7V
• Discharge end voltage: 2.75V
• Charging voltage: 4.20 +/- 0.03 V
• Standard charging current: 1.625 A
• Nominal capacity: 2200mAh
• Rated capacity (minimum): 2100mAh
• Dimensions: (2.65 x 0.72)" / (6.73 x 1.84)cm (L x Dia.)
• Color: Green

This is a low capacity, low current cell. Tmart has this cell in four configurations, this is the unprotected button top.











The cell can deliver up to 5A before it looses capacity. The curves here looks good when staying below 5A, but as can be seen with the flat top version there is some variation between cells.



There is no problem with temperature at 5A















TLife 18650B FT 2200mAh (Green)



Official specifications:

• Model: 18650B
• Battery Type: Lithium-ion
• Rechargeable: Yes
• Protected: Yes
• Positive terminal style: Flattop
• Nominal voltage: 3.7V
• Discharge end voltage: 2.75V
• Charging voltage: 4.20 +/- 0.03 V
• Standard charging current: 1.625 A
• Nominal capacity: 2200mAh
• Rated capacity (minimum): 2100mAh
• Dimensions: (2.57 x 0.72)" / (6.54 x 1.84)cm (L x Dia.)
• Color: Green

This is a low capacity, low current cell. Tmart has this cell in four configurations, this is the unprotected flat top.











These two cells do not match neary as fine as above. The current handling is the same.



No temperature problem here.















Conclusion

These batteries do not win on capacity or high current, but they can easily drive a normal single cell flashlight.
I would have liked a bit better matching between the cells, but when used one at a time it is not a problem.



Notes and links

The batteries was supplied by TMart.com for a review.

How is the test done and how to read the charts
How is a protected LiIon battery constructed
More about button top and flat top batteries
Compare to 18650 and other batteries