aL01
January 1, 2026, 1:23pm
1
Hey Guys, getting a Klarus XT21X Pro and some new Batts-
I’ve narrowed the field to these four…any suggestions to which one?
Molicel P45B 21700 4500mAh 45A Battery
Molicel P42A 21700 4200mAh 45A Battery
Samsung 50S 21700 5000mAh 25A Battery
Samsung 40T 21700 4000mAh 35A Battery
Samsung 45T 21700 4500mAh 50A Battery
Thanks!
zoulas
(zoulas)
January 1, 2026, 2:17pm
2
IMHO, that light wont make use of 45 amps. Better get the longer run time. I would probably go with Samsung 50S. I have that light, its excellent.
aL01
January 1, 2026, 3:22pm
3
The Klarus is in the mail…
Can it handle ‘Flat-Top’ Batteries?
Thanks-
peg_matite
(peg matite)
January 1, 2026, 10:53pm
4
I have one. Great light. Flat top work. Go for capacity. I bought a couple 50E’s.
aL01
January 1, 2026, 11:42pm
5
I bought #2 Samsung 50S 21700 5000mAh 25A Batteries-
Thanks!
ZEUS-FL
(Nelvick)
January 20, 2026, 1:17pm
7
The best cell you can get for high performance 21700 cells + high capacity is a TENPOWER 50XG or Ampace JP50P1.
Both cells are tabless cells and are the ones that run the coolest under load.
The TENPOWER 50XG is rated for 90A CC with Temp Cut
Powering the Next Generation of Electric Motorcycles Engineered for elite performance, the TENPOWER INR21700-50XG cell delivers extraordinary power density and reliability for high-performance EVs, especially electric motorcycles. This is the...
Price: USD 7.15
The Ampace JP50P1 is rated for 50A CC + Temp Cut.
Here you can see some testing I have done with few cells, including Samsung 50S that is a VERY BAD cell for high current applications.
Independent 50A constant current discharge testing for multiple 21700 lithium-ion cells. Interactive plots: voltage, power, temperature, and capacity.