While I'm asking! What's *the best* brand of 18650 battery to get. High on my list: no discharge over time, holds a charge well, etc.
310350
I own UltraFire and Tenergy Brand of 18650@3000ma. I have 5 set of them. I only had 1 bad one that won't hold a charge in storage. The rest seem fine I measure the voltage on them to check. After a fresh charge it measure 4-4.3 volts. Then it drop to 3.8,4.1 for over about 2 month. I think like everything a little luck is involve. I read the other peoples reviews and 4-2 stars to me if the price is right I'll take a chance. So far it a good deal Beside they are all made in CHINA no matter which brand. The Trustfire charger works fine too. Voltage on batteries checked before this reply...
310351
The best brand I have used is AW which is unfortunately not sold on Amazon. I did notice the Panasonic & Eagletac were highly rated.
359235
I'm not sure what the best are. The batteries provided were one use of course. I've got ultrafire 18650 rechargeable right now.
1725814
Wow, mine didn't do that, hey are you having any battery problems? This drill is better than my old Milwaukee if can believe it? Never and I mean never bogs down, but I bought 3 spare batteries, only one holds a charge. Thought I would try the newer lithium what do y'all think?
1966847
I used the Tenergy 18650 battery and charger combo. So far I have used the light once to scan my backyard and the output of the was fantastic.The fit of the batteries were no issue at all. I have the spare one charged and stored for over 3 months, took it out and the voltage drop was negligible.I will test the battery again in a few weeks a see what voltage drop I have.As far as the light goes, it was a good buy and I highly recommend the Tenergy battery charger combo to get started.
359236
What capacity 18650 battery are you running? I'm using a 3400mAh 18650 and it lasts days for me of itermittent use on level 3-4.
17941
I have found that the 18650 3000mAH batteries work very well with it. You can get the inexpensive charger andd use them over and over again or charge up an extra set for when the ones in the flashlight drain down. The specific brand I use is UltraFire batteries.
1112243
It's been my experience that most high end flashlights (with power management circuitry) fail to live up to the manufacturer's claims. They're general guidelines at best. Granted, I've never actually put the flashlights up against a clock, but I think the Klarus is as good as any. Honestly, I think the brand of battery is a more significant factor. I typically use Duracell, Panasonic, and Surefire. I've had noticeably poor performance from cheap batteries.
1513741
Li-ion rechargeable 18650, i personally use 5000mAh batteries the higher the mAh rating the konger burn time you will get on a charge. Since I utilize this flashlight exclusively for scuba diving mostly at night the length of burn time is important to me. There are several packages of these batteries on amazon is you search for "18650 battery" . I hope my somewhat longwinded answer helps you. As a side note the light wirjs great to depths of 130' mine has roughly 50 dives to that deth. Make sure that you utilize silicone grease on the o-rings befire submerging the light.
645470
I use Nitecore Intellicharger i4. It great for the 18650 and 26650. But 26650 take all most all day to charge do to there Large Capasity. But I think they made a new version with a lcd screen on it.
2033335
Any rechargeable AA will work. The ones with the higher mAh ratings will likely hold a charge longer. I've used different brands without noticing much difference. I would just avoid the cheapest, unknown brands.
974344
The batteries are known as 18650 and are amazing and rechargeable. Usually located in the "customers also bought these items" section. It's a great light. Durable/tough, bright and is available in 5 Mode, which I would recommend. Also, definitely prefer this over the 502b, which is just not as rugged, but would be lead to believe it is newer and better as it is a higher number. Not sure but off topic.Great light 18650 are the batteries it needs or you could use VERY expensive 2 x cr123 non chargeable batteries. WASTE OF MONEY. GO WITH A PAIR OF 18650 AND A CHARGER for about 10 bucks! Hope it helps. The batteries are known as 18650 and are amazing and rechargeable. Usually located in the "customers also bought these items" section. It's a great light. Durable/tough, bright and is available in 5 Mode, which I would recommend. Also, definitely prefer this over the 502b, which is just not as rugged, but would be lead to believe it is newer and better as it is a higher number. Not sure but off topic.Great light 18650 are the batteries it needs or you could use VERY expensive 2 x cr123 non chargeable batteries. WASTE OF MONEY. GO WITH A PAIR OF 18650 AND A... » Read More The batteries are known as 18650 and are amazing and rechargeable. Usually located in the "customers also bought these items" section. It's a great light. Durable/tough, bright and is available in 5 Mode, which I would recommend. Also, definitely prefer this over the 502b, which is just not as rugged, but would be lead to believe it is newer and better as it is a higher number. Not sure but off topic.Great light 18650 are the batteries it needs or you could use VERY expensive 2 x cr123 non chargeable batteries. WASTE OF MONEY. GO WITH A PAIR OF 18650 AND A CHARGER for about 10 bucks! Hope it helps. « Show Less
1490669
The Nitecore charger is actually a great charger, it just sounds like you got a unit that was bad. As far batteries, the research I've done suggests that a lot of them are actually the same - just branded with whatever company is selling them. I'm not sure if they sell on Amazon, but I have had excellent service with a place called Orbtronic. The Orbtronic batteries work very well and I've never had a problem with them not charging fully. I also have a couple of EagleTac branded batteries for my EagleTac flashlight. I honestly can not tell a difference.
461356
Patrick the best battery that I have found to use is the Orbtronic 18650 3100mAh all others I have tried have failed after a couple recharges, I have recharged these batteries 14 times and they still charge up to 4.2 V and maintain brightness down to about 2.7 v. I use the light everyday and I swap batteries about once a week. Hope this helps
1114542
The flashlight uses a 18650 lithium ion rechargeable battery. There are many brands, but the PanSonic and Tenergy brands are the only consistently good ones out there that accurately represent the capacity of the battery. If you buy those brands, you only need one battery, as the flashlight takes only one. If you buy other brands, buy at least 2, as one is likely to go bad or have a short life. Make sure to buy "protected cell" battery's, and don't forget to buy a battery charger as well. I have bought cheap chargers, and had no problems. All in all you shod expect to pay around 15-20 bucks for a decent battery and a charger. The flashlight uses a 18650 lithium ion rechargeable battery. There are many brands, but the PanSonic and Tenergy brands are the only consistently good ones out there that accurately represent the capacity of the battery. If you buy those brands, you only need one battery, as the flashlight takes only one. If you buy other brands, buy at least 2, as one is likely to go bad or have a short life. Make sure to buy "protected cell" battery's, and don't forget to buy a battery charger as well. I have bought cheap chargers, and had no problems. All in all you shod expect to pay around... » Read More The flashlight uses a 18650 lithium ion rechargeable battery. There are many brands, but the PanSonic and Tenergy brands are the only consistently good ones out there that accurately represent the capacity of the battery. If you buy those brands, you only need one battery, as the flashlight takes only one. If you buy other brands, buy at least 2, as one is likely to go bad or have a short life. Make sure to buy "protected cell" battery's, and don't forget to buy a battery charger as well. I have bought cheap chargers, and had no problems. All in all you shod expect to pay around 15-20 bucks for a decent battery and a charger. « Show Less
1995489
With this type of battery, the key is to discharge it before recharging. I've got well over 400 "burn hours" of my lamp now and it still holds a charge perfectly. When it's fully charged, I unplug it and burn it for a while, then let it sit until the charge is almost exhausted.
1153209
The ultrafire 18650 are very undependable but if they are to work then what you have to do is charge them and when they run most of the way out put them on a charger right away never let them sit with out a charge if you are going to use this type of cell then you should upgrade to a better well known brand they don't last I had 15 of them now I have two the rest just don't take a charge anymore
1596771
There is a performance gain by using the 18650 battery. I tried both battery options and found the 18650 to work the best. I have a couple other flashlights that uses the 18650's. I purchased a 12pk of the 6000mAh batteries and that is my recommendation. That last for ever. I hope this helps.