18650 Or 16340 Rechargeable Lithium Battery

I have multiples of these and have charged both 18650 and 16340/123 of multiple brands and it does a good job.

Nitecore 18650 Li-Ion Rechargeable Battery is a great source of stored energy. Being rechargeable makes this battery cost effective. This Nitecore Li-Ion battery has demonstrated its dependability in a flashlight over a period of seven hours of intermittent use. Great product!

I have multiples (5) of these which I have purchased over the past 4 or so years. They charge 123/16340 and 18650 Li (I have not used them for LiFePo cells such as the SureFire 123 batteries however) and IMR 123 batteries nicely. I have used these chargers with Fenix (16340), Olight (IMR 16340) and Surfire (18650) batteries and they have worked well. The display is very helpful for getting a sense of where the batteries are in the charging cycle. This charger does not, to my knowledge recondition batteries. Also, there may be calibration differences among charger or even in one charger itself -- individual charger may read cells' voltages differently including reading them differently in the charger's own left and right channels. This has not been any sort of a problem, as far as I can tell, with the cells I have been charging. Another small niggle is that the input cable fits a bit loosely into the charger.

I have bought three of these -- they have worked nicely charging 16340 (mainly Plight and Fenix) and 18650 (Olight, Fenix, and Surefire) cells including IMR 16340 cells. The display is nice bright and early to read. On the lastest one I purchased, the channel s differ on their estimation of the charge level of cells and when the cells are fully charged, but the difference is minor.

Rechargeable lithium-ion battery used for Olympus camera works well everytime.

The Nikon EN-EL 18d Rechargeable Lithium-Ion Battery is a super battery with an incredibly long life and easy to recharge. Highly recommend!

I use this battery as a back-up to my Nikon battery EN-EL4a rechargeable Lithium-ion Battery Pack. I always use my original Nikon battery but if I am out in the field and my Nikon battery goes down after many shots, I then switch to the the Watson EN-EL4A Lithium-Ion Battery Pack as my back-up until I can re-charge the Nikon battery again at home. I find it's more economical using it that way since there is such a big price difference between the Nikon Battery and the Watson Battery. However the Watson battery is a very good battery and reliable in every way.

Eartec Rechargeable 3.7V Lithium-Ion Battery for UltraLITE & HUB Systems

The Sony NP-FZ100 Rechargeable Lithium-Ion Battery (2280mAh) delivers as promised as an OEM battery.

Coast’s lithium battery ZX450 all batteries that Coast supply are excellent. Reason I say this is because rechargeable lithium batteries sometimes have issues like premature failure. Things like not taking a charge, memory issues, and short run times to name a few. I do handle lion cells as recommended which is important for long life. Coast batteries and my lithium cellular batteries are the only batteries that work as promised regarding rechargeable lithium cells. I expect an a dramatic improvement with rechargeable lithium batteries of all sizes any time.