Two more 16340 arrived the other day ..
Graph shows the results for 5 ( 0.5A ) discharge cycles : ( 0.5A discharge to 3v termination )
I also did a current discharge test after the discharge testing :
Efest 16340 : 1.79Amp
Olight 16340 : 1.53Amp ( Battery Dia - 16.3mm , Length - 34.2mm )
Keepower 16340 : 1.67A ( Battery Dia - 16.4mm , Length 35.7mm )
Conclusion:
The Olight comes closest to factory capacity claims ( 650mAh ) returning 613mAh in one test , while the Keepower with a 700mAh capacity claim falls rather far short with a 579mAh best test . Even though the Keepower battery discharges at a higher current , I like the Olight better . The Olight is smaller , has better capacity and should fit inside a lot more flashlights . Both batteries appear to be decent quality , so check out the results and make up your own mind .