Test/review of UltraFire TR18650 5000mAh (Blue) 2018

Batteries and Chargers Rechargeable Batteries
1

UltraFire TR18650 5000mAh (Blue) 2018







Official specifications:

  • No memory effect, recharge up to 1000 cycles

  • 100% brand new 18650 rechargeable batteries

  • 100% quality Japanese battery cells

  • 100% Q.C. of every battery

  • Capacity: 5000mAh

  • Voltage: 3.7 V

  • Chemistry: Li-ion



With the above specifications this must be good batteries? Or maybe not!









The wrapper is, as usual, wrong, there is not PCB in these batteries.



The batteries can deliver about 2A and has a capacity of 1100mA


















Conclusion

I have tested this battery a few years ago and it has not improved with time, it is slightly worse.

It is a bad battery, with wrong specifications. It is cheaper to buy good batteries!



Notes and links

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
2

As expected, thanks :+1:

3

:slight_smile:

4

I guess, the motto of their sales department is: there’s a sucker born every minute.
Thank you Henrik, for your efforts in preventing that I (we) might be the next one.

5

Ouch, that internal resistance! :weary:

6

What was that about “Anything with FIRE in the name??.”
BLF Coupon prices etc give access to decent battery’s at good prices.
WHY would you even bother with the Chinese ones?.

I’m quite pleased with my SOSHINE actually. 26650/14500 and 10400?(AAA)
Better than expected.
But the NCR Panasonic 18650 and Samsung Q30’s do me fine. they NOT exxy on coupons. and do all the torches I use.
It’s hard to get decent battery’s here without paying full Aust pricing. Expensive.