Vapcell INR18650 2900mAh K29 (Purple) 2021

[HKJ]

[size=+3]Vapcell INR18650 2900mAh K29 (Purple) 2021[/size]

Official specifications:

• Model: K29
• Size: 18.3*65.2mm
• Typical Capacity: 2900mAh (0.2C discharge)
• Min capacity: 2800mAh (0.2C discharge)
• Nominal voltage: 3.60V
• Max Continuous Discharge Current: 20A
• Max Discharge Current: 35A
• End-of-charge voltage: 4.20V
• End-of-discharge Voltage: 2.5V
• Weight: 48g ( Appr)
• Internal resistance: 14mOhm ( Appr) AC 1kHz
• Standard Charge: 1500mA ,CCCV 100mA cut-off
• Quick Charge Current: 4000mA

A 18650 cell with decent capacity and current.

The two cells match nicely and can deliver the rated 20A current.

[size=+3]Conclusion[/size]

The cells looks good and can deliver a good amount of current for the capacity.



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

The batteries was supplied by Vapcell for 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
Graphical comparison to 18650 and other batteries
Table with all tested LiIon batteries

 

[knucklegary]

Great cells appears they deliver!

Did Vapcell supply case just for the review, or do all their cells come with zipper hard cases?

Thanks for the review! 🧑‍🎄

 

[skid00skid00]

HKJ,

In general, how do you decide the charge amperage. I spent a few hours trying to find mfr documentation on all my batteries (from 10440 to 26650), and some charge currents surprised me. A high-discharge 10440 had a higher charge current than a low-discharge 14500!

And, as always, thanks for another great review. I love the details.

 

[skid00skid00]

HKJ,

In general, how do you decide the charge amperage. I spent a few hours trying to find mfr documentation on all my batteries (from 10440 to 26650), and some charge currents surprised me. A high-discharge 10440 had a higher charge current than a low-discharge 14500!

And, as always, thanks for another great review. I love the details.

 

[HKJ]

Did Vapcell supply case just for the review, or do all their cells come with zipper hard cases?

They supply the cases for review, but I do not know if they are included with the normal orders.

 

[HKJ]

HKJ,

In general, how do you decide the charge amperage. I spent a few hours trying to find mfr documentation on all my batteries (from 10440 to 26650), and some charge currents surprised me. A high-discharge 10440 had a higher charge current than a low-discharge 14500!

And, as always, thanks for another great review. I love the details.

When testing I use 1A for all most cell, 1400/16340 and smaller is 0.5A.
As a general guideline you can use something between 0.5C and 1C, high current cells can usually be charged much faster that that.