I put 3 of these in my ultrafire flashlight and nothing happened. I got them charging now. How can I tell when they're finished charging?
447236
Mine came with almost a full charge on them (~4.1V). I topped them off overnite two at a time - used one for a day in a Fenix PD35. It's been >2 weeks since I charged them and they all read 4.16V - I can't tell which one I used! The charger supplied is minimal - expect over two days to fully recharge a depleted cell with it. The Nitecore I2 or I4 is a better charger. You need a $3 Harbor Freight CenTech Digital Multimeter to check them.
367191
Hi ,I'm not the owner of SureFire Flashlight so i can't tell you why . I used them with OLIGHT flashlight and works fine .
634187
Is it charged? If so the bulb may have to be replaced! Mine did. As a result of the way they are shipped the bulbs get ruined! But all and all this is a great flashlight! Call Amazon and tell them it's not working and they are very good on replacing them. I had to do that with mine and the 2nd one was fine.
573775
pretty simple... charge via the microUSB port. Use your device USB cord to charge your device. When your device is attached, press the small button on the side of the battery to activate charging. Your device will signal that it's being charged. To check the photive battery status without a device attached, just push and release the same button. For the flashlight function, push and hold the button to turn on the light and the same to turn off. Hope this helps.
1348226
Mine have always worked. Make sure the outlet you're plugging into has the correct voltage and that the indicator light is solid. I thought mine wasn't charging once but the outlet (GFCI) had tripped! Sorry I'm not more help.
1445523
Howdy, Check the spring I wrote about in the review. When I had mine I was walking along and light quit working. When I took out the batteries and looked into the flashlight the spring that was soldered to the LED circuit board had the solder break and the spring was just laying there. I had to resolder the spring to the board. Has been working fine ever since. I hope this helps. I guess we should all just send them back and then maybe the manufacture would fix the soldering problem they have.
719380
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. 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... » Read More 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. « Show Less
1310682
Try holding down the button on bottom left for a second or two. It should light up and show how much of a charge it has. Push it again and the flashlight will come on. Again and it turns off. But if memory serves me, you should just be able to plug your connection in without "turning it on". Now I found after a short while that my charging connector became loose and if I didn't place it just so, it wouldn't charge up. I've had mine for some months and it still works great when charging from the wall. Never figured out how to do it with the solar part. Hope this helps.
1561824
My unscientific way on checking battery life was to just turn it on and let in shine. There is no high/low switch, just slide the barrel back and forth to make the magnifying lens intensify the light beam. With this in mind, I had my flashlight turn on for more than 10 hours and the was still useable light coming out. Hope this helps. Oh by the way, it had a full battery charge at the beginning. I am using the ultra fire BRC18650 3000mAh 3.7 volt li-ion battery that came with my flashlight kit with the included charger. Other people have done a more through test on these batteries. Like I said above, my study is more anecdotal not scientific.
85883
i have charged mine several times with no proplem. perhaps you want to check to make sure it was off when charged otherwise i know your bulb will take a hit. try turning on the side light and leave it on, even though it might not light up, it will discharge the overcharge if that is the problem good luck.
2120629
When it's flashing, is it still in the base charging unit or outside of it? While in the charging unit, it should reach a point where the lights become solid (no flashing). After use, the bottom lights will flash indicating the brush is not fully charged. If it is still flashing while in the charging unit after a solid 24 hours, you may have a faulty unit.
436263
Your charger is not for this battery. This battery is about 3 inches long and larger in diameter compared with your AA/AAA batteries. The battery is a LI-Ion 3.7 v, not like your 1.5v batteries. Get you a charger for the Ultrafire battery.......it's designed for it and low cost. My charger can charge one or two batteries at a time....no problem. Worked great with the Ultrafire 1000 lumens light.
393819
I do - they don't continue to charge as when the light goes off it stops charging - to start the charging again you have to unplug for a few minutes and then replug it in. I do this as I have solor outdoor lights (both AA & AAA) so I leave a few of each in the charger and only remove a couple at a time as needed.
498477
The light supose to come on red. When its charging and when its fully charged it turns green. But the ones that i got didnt turn on at all
32343
After you plugged the attachment did you reboot the phone before trying to charge? are you judging it is not working because the lighting symbol is not showing up? that happens on my first gen MotoX... i use a third party app (Curve fish battery widget) to indicate that charging is happening.
1556053
Well, this is something everyone agrees on. When you attach your device a number of the four LEDs will light up and start blinking, depending on how discharged your device is. You are fully charged when all four are lit up and steady. It really is something I've found very handy.
2165467
I don't have a red dot on mine. There is a rubber switch on the left side and all you have to do is push it. If they are not charged, they will not come on. When you plug it in to charge, a light should come on on the top to tell you they are charging. They should also come on while plugged in. Let me know how you do. chuckie0204@hotmail.com