Test/review of Vapcell NCR21700 4800mAh (Purple)

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HKJ's picture
Last seen: 5 days 23 hours ago
Joined: 05/24/2011 - 12:23
Posts: 7402
Location: Copenhagen, Denmark
Test/review of Vapcell NCR21700 4800mAh (Purple)

Vapcell NCR21700 4800mAh (Purple)
Official specifications:

  • Model: vapcell INR21700
  • Size: 21.0*70.0mm
  • Nominal voltage: 3.6V
  • End-of-charge voltage: 4.20V
  • End-of-discharge Voltage: 2.50v
  • Typical Capacity: 4800mAh (0.2C discharge)
  • Min capacity: 4700mAh (0.2C discharge)
  • Weight: Max:69g
  • Internal resistance: Max:14mOhm
  • Standard Charge: 1500mA,CCCV 100mA cut-off
  • Charging Time: 5 hours (standard charge)
  • Quick Charge Current: 4000mA
  • Max Continuous Discharge Current: 20000mA
  • Operating Temperature: Charging: 0°C ~ 45°C, Discharging: -20°C ~ 75°C, Storage Temperature: -5°C ~ 35°C
  • Storage Humidity:
  • Appearance: Without scratch, distorion, contamination and leakage
  • Standard environmental condition: Temperature: 23±5°C, Humidity: 45-75%RH, Atmospheric Pressure: 86-106KPA

A very high capacity cell in the new 21700 format.
DSC_2046 DSC_2047 DSC_2048
DSC_2050 DSC_2051
The discharge curves tracks nicely and the battery has lots of capacity, but it is not a high current cell.
At 15A I have to stop the discharge early due to temperature
At 30A it gets hot fairly fast.
This battery has very good capacity, but is best used at 10A or lower for continuous usage.
Notes and links
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
Compare to 18650 and other batteries

My website with reviews of many chargers and batteries (More than 1000): https://lygte-info.dk/

Last seen: 1 month 7 hours ago
Joined: 09/30/2016 - 12:44
Posts: 1515
Location: Ho Chi Minh City, Vietnam

It has nearly same capacity of decent 26650, amazing

Forgot my pen

Barkuti's picture
Last seen: 6 days 7 hours ago
Joined: 02/19/2014 - 14:46
Posts: 5480
Location: Alhama de Murcia, Spain

Samsung 48G based. Overspecced cell.

This cell simply cannot be rated “48” at any discharge rate. Silly

Decent 26650, mrheosuper? To me a decent 26650 is the PLB 5000mAh (LiitoKala 26650-50A and the newer rewrap Lii-50A). 

This is for everyone, not just for the aforementioned. Now go hit the “rude” button, you @#$%!  Thanks! Smile

If we were to define capacity from a ≈1C standpoint, this cell's down to 2.8V rating is 4500mAh. It's power delivery ability is not even half of that of a 50A. Yes, it is smaller and lighter but, at what price?

I can buy two 50A cells for the price of this @#$%. No need to say @#$% else.

It is funny to see how quality chinese manufacturers are being more honest than Samsung, Panasonic/Sanyo and Sony.

Open your eyes, lads and lasses. 


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