Why I like XTAR batteries...

Now that I have the Opus BT-C3100 charger, I can see how my long time reliable and unreliable cells are doing.

I have a set of XTAR 2600mah 18650’s from the special many years back. They’ve been workhorses in my bike lights with countless hours on them.

As a matched set of 4, I got readings from 2100mah to 2250mah using the 1amp test cycle.

Although that is technically end-of-life, I can see them serving well putting out many more lumens before I retire them.

too bad you have no reference from new to compare to.
sounds like they are at least decent.

These are still my only 18650’s, never let me down so far.