Do you have to discharge the 18650 batts. before recharging?
89437
These are fakes. There is no such thing as a 4000 mAh 18650 battery. The company is fake, too. It spams five-star reviews for its own products. You can tell by looking at their "other reviews".
89438
No i hvnt needed to i got them and charged them and when i can tell they start to drop off volts i charge them but they work ok last about 4 or more hrs before i notice voltage drop. My mod says they still are half charged but i notice the drop around 60% so i just charge them. They are good for back up so they work ok for me. I use my sony and efest batteries for when iam going out and i bring one of these just incase. But i also vape alot and at 20 or more watts so if u hv a mod thats only 15watts they would prob work verry well. I dont use them in my dna30 because they are button top and hard to get out of device. If u hv any more Q just ask. No i hvnt needed to i got them and charged them and when i can tell they start to drop off volts i charge them but they work ok last about 4 or more hrs before i notice voltage drop. My mod says they still are half charged but i notice the drop around 60% so i just charge them. They are good for back up so they work ok for me. I use my sony and efest batteries for when iam going out and i bring one of these just incase. But i also vape alot and at 20 or more watts so if u hv a mod thats only 15watts they would prob work verry well. I dont use them in my dna30 because they are button top and... » Read More No i hvnt needed to i got them and charged them and when i can tell they start to drop off volts i charge them but they work ok last about 4 or more hrs before i notice voltage drop. My mod says they still are half charged but i notice the drop around 60% so i just charge them. They are good for back up so they work ok for me. I use my sony and efest batteries for when iam going out and i bring one of these just incase. But i also vape alot and at 20 or more watts so if u hv a mod thats only 15watts they would prob work verry well. I dont use them in my dna30 because they are button top and hard to get out of device. If u hv any more Q just ask. « Show Less
719381
Well........I'm not sure what "unprotected" batteries are in YOUR case, but I have 4 different 18650 batteries and they ALL charge up and the charger LED DOES turn green after the batteries have a full charge. Now this is for ME and the batteries that I have. One of the batteries I have is an Ultrafire BRC 18650 3.7V li-ion 3800mAh , and another one is an Ultrafire BRC 18650 3.7V li-ion 4000mAh. The other two are in flashlights that I have at another house so I can't answer what the brand is for those. But as I said.......the charger unit DOES turn green with these batteries in there.
1661061
No dude you need the 18650 batteries. The regular aa batteries are too small. The 18650 batteries are fatter and more powerful. The good thing is that it only requires only one 18650 batteries and they are rechargeable. My suggestion would be to buy a pair with the wall charger, and Carry the second battery as a backup or replacement.
1224298
Yes...you remove the battery and recharge it in the charger. I've had mine sitting on the nightstand for about two months now and it still appears to be charged so unless you use it a lot, you shouldn't have to charge it very often. This is a great flashlight...I need to buy another one for the car.
2240400
They're not necessary, no. The former is really recommended for any Lithium Ion battery for maximum battery lifespan, but it's not required and it won't hurt you to avoid it. Having read about this before, it appears that this is mostly for devices you aren't using constantly. Keeping a device at full charge for long periods is the real no-no. Short charges are bad for a battery, but we're talking roughly 5-10%. Discharging down to &gt;2% may not only not help, but in itself be bad for the battery (especially due to heat and the size of the battery). There has been talk about a memory effect, but only in the last eight months. Li Ion batteries have managed a 20 year history without significant noticeable effects of 'memory,' so take such arguments with a grain of salt.
1984645
These are facile batteries and charging is difficult to pin down. The first time I charged them it was maybe about and hour, but they were not completely drained either.They should not be over charged are over used in my experience. They get really warm in the torches and will at this point discharge rather fast. I try and watch them when charging because I really don't trust them, when the Green light comes on I take them off the charger quickly, hope this helps.. PS: this is the first time I have had all eight being in perfect working order since I started using them.
1889603
No just use it until the lights go out then recharge, it's an ion battery, so it's best to drain it then charge to full.Love mine it have saved me a ton of headaches.
1378756
I would say no. Neither battery I have had ever discharged when plugged in.
719379
I've used these batteries for over a year and they've never gotten hot when left in the charger for extended periods. On my charger, the light turns green. I also charge AA and AAA batteries and they do seem to get very hot, so, in short, I believe the 18650s are safe, but that's just my opinion based on my experiences.
1267051
I purchased 3.7V 18650 3000mah Rechargeable Batterys. They seem to work well. I've used them for about a year so far.
410804
No, they are not the same battery. The 18650 is a rechargeable lithium ion battery. The cost is reasonable and, having used about 8 of this type battery, I can vouch for their longevity and utility.
2140773
No. An 18650 is a rechargeable battery that takes the place of two CR123A batteries
1232189
I purchased this and am very happy. And no, you have to use these rechargeable batteries.4pcs 18650 4000 mAh 3.7V Li-ion Rechargeable Battery + 1pcs charger
1239117
Yes. Battery needs to be in the lamp/flash light housing before you plugin the charging cable. Charging socket is a part of housing so battery muct be inserted into the battery holding slot in the housing.
2244648
No, you should remove batteries when they are fully charged. The unit has built-in protection to prevent overcharging but why put it to the test continually? The risk of fire far exceeds the benefit of having a fully charged battery.
1964422
Negative.. the batteries are 18650 rechargeable batteries there like twice the size of a double A. Should come with battery and charger. And lot more convenient being you won't have to keep buying batteries.
707191
I am sorry, but I do not know the answer to this question. I normally put them on the charger and put other batteries in the unit the batteries were removed from. I put the discharged batteries in my charger, two or four at a time, plug it in and go about my activities. When they are charged the charger light turns off and I remove the charged batteries when I notice they are charged. Usually it will be the next morning or in the evening. It is not uncommon for batteries to be in the charger for eight to 12 hours. Tom Kerr