Test/review of PKCell ICR10440 350mAh (Blue)

[size=+3]PKCell ICR10440 350mAh (Blue)[/size]



Official specifications:

• Brand: PKCELL
• Model Number:10440 3.7V Lithium Li-ion Rechargeable Battery
• Type: Li-Ion
• Nominal Voltage: 3.7V
• Size: 10440
• Nominal Capacity: 350mah
• Model: icr10440 350
• Dimension: 10.2mm*44.02mm
• Nominal capacity: 350mAh(NOT HIGH DRAIN)
• Nominal voltage: 3.7V
• Shape: cylinder
• Color: blue
• Top: Flat top
• Usage: e-cigarette
• Weight: 15g

AAA sized LiIon cells, how good is this brand?










Up to 0.5A the cell works fine, at 1A it has lost some capacity (Sorry, only curve for one cell) and it cannot do anything at 2A



















[size=+3]Conclusion[/size]

The performance of this cell is not very impressive, but that is the same for most 10440 cell. The capacity is always around 300mAh and some can deliver more current than other, this one here is not a high current cell!



[size=+3]Notes and links[/size]

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
Comparison to other LiIon batteries

Love the details and empirical data. Would someone help me understand the first graph though? Am I correct that it indicates this battery puts out about 0.1Ah during the time it takes to drop from 4.2v to just over 3.7v with a 0.1A load? And that it drops from 3.3v to 2.8v very quickly, during the time it takes to put out only a very few Ah of current (10mAh or so)?

Therefore, realistically you get about 300mAh as the voltage drops from 4.2v to 3.3v, and then it's time to recharge.

Thanks in advance for confirmation or correction on this.

Hello HumanJHawkins,

Welcome to CPF.

I believe you are reading the graph correctly. This cell is labeled at 350 mAh but seems to give a little over 300 mAh.

Tom