Test/review of Keeppower INR20700 3500mAh NH2035 (Black) 2019

Batteries and Chargers Rechargeable Batteries
1

Keeppower INR20700 3500mAh NH2035 (Black) 2019







Official specifications:

  • Capacity min.: 3475mAh

  • Capacity typ.: 3620mAh

  • Nominal voltage: 3.70V

  • Charge voltage: 4.20+/-0.05V

  • Standard discharge cut-off voltage: 2.50V

  • Standard charge current: 2450mA

  • Charge termination current: 100mA

  • Standard discharge current: 5100mA

  • Max. continuous discharge current: 30A



This is a high current 20700 cell from Keeppower with moderate capacity.










The two cells tracks nicely, capacity drops slowly with increasing load. I stopped the 30A test because the batteries got hot.






















Conclusion

These moderate capacity 20700 cells is good cells for high current.



Notes and links

The battery was supplied by Keeppower 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
2

Thanks HKJ! I appreciate your work.

3

Thanks for this review HKJ!
Do you have any clue where these batteries can be bought?

4

No, I get a box directly from Keeppower. With batteries I buy you can see in the info box where I bought them.

My best advise is to do a google search and see if something turns up.

5

Thanks for the reply HKJ!
I did a search and keeppower site was the only place got results from! Maybe I need to contact them. Normally AliExpress stores have Keeppower batteries, but not this one.

That’s why I asked!

I was comparing this cell with others 20700 and this seems the best suited for high drain flashlights!
I want to put one of these in the flashlight I modded for the OL Contest this year, to get some more power than the one I get with the Sony VTC6 and also some more runtime!

Thanks for your reply and your test :+1:

6

maybe it’s a Sanyo NCR2070C, same capacity, same current rating, Nkon sells it.

Edit : all ratings are identical.

7

Thanks! That seems to be the same one :wink:
Unfortunately…buyig from nkon.nl I would be paying more for shipping than for the cells. Unless I need some more stuff from there, it doesn’t compensate getting 2 of these batteries from there.
Still, it was a nice find so thanks for the information :+1: