TrustFire Protected 18650 Lithium Battery (2500mAh 2-Pack Blue)

Pros: Cheap, Work well, Protected

Cons: Don't think these work properly with item sku.936

Other: I charged these with a charger from DX. The charger is supposed to trickle charge and the light is supposed to change green. After 6 hours the charger didn't turn green so I checked the voltage of the batteries and they were sitting right at 4.2v. They weren't warm and didn't explode.

Pros: + button-top cell !!! (no need for magnets or solder blobs everywhere ;) ) + relatively high capacity + protected + "cheap"

Cons: - slightly longer and wider than unprotected cells, as most protected cells. length: 68 mm, max. diameter 18.4 mm

Other: I am thinking of getting at least another pair ....

Pros: Unbeatable price. I run them in my Deerelight and they last loooong time.

Cons: Can't find any.

Other: That's the price i paid for 1 x CR123 Energizer primaries in Canada.

Pros: Both arrived charged to 3.9v. After charging on a WF-139 (sku.1251) that usually stop at 4.2v, they were ready at 4.175v and 4.165v. A much better level than 4.3v on some protected cells on a faulty charger.

Cons: Nothing so far.

Other: A great protected 18650 cell with termination that really protect the cell.

Pros: Good quality. Well build. Last very long. Good protection. Stops exactly at 4.2 volt.

Cons: A bit thicker than the grey Ultrafire's protected batt.

Other: Best price and quality Li-ion 18650

Pros: Good price for a LiIon cell with protection circuit. I accidentaly tried the short circuit protection by measuring current instead of voltage over the cell, so i know that works...

Cons: The protection circuit and wiring makes the cell slightly longer and wider than an actual 18650.

Other: Great cells, great price.

Pros: Wery best 18650 batteries for that price! Capacity is at least 2200mAh (have no equipment to quality test it) i got a 3,5h with 700mA constant on Seoul emitter using 19-mode driver board, until protection kicks in!

Cons: For high drain circuits as high power incan lights, choose unprotected or else protected bats, because of comparatively
low protection knee.

Other: If you need cheap good quality protected 18650 batts for led projets - buy theese!

Pros: Excellent batteries for the price. I use them with the WF-400 Cree Q2 (sku 6937) and it's perfect.

Cons: none

Other: Very good batteries. No problem !

Pros: - Great for flashlights that can use 18650 cells. - It's better than using (2) CR123A's

Cons: Comes in a 2 pack which means I now need to buy another flashlight for the extra battery I now have! :-)

Other: How can you go wrong at this price?

Pros: These batteries have performed well for me so far, they work fine in the wf-500 xenon light which is rare for protected batteries. Another positive is the built in nipples on the positive end of the battery, no magnets needed.

Cons: none

Other: Good value