DX » Community » Reviews » UltraFire Protected 18650 3.7V 2400mAh Lithium Batteries (2-Pack Grey)
4.8
  • 5 star 18 ( 82% )
  • 4 star 3 ( 14% )
  • 3 star 0 ( 0% )
  • 2 star 0 ( 0% )
  • 1 star 1 ( 5% )
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  • posted byPavouk106 on 01/03/2014

    * Good price * Protective PCB works (cut-off voltage is 3V, after reaching this point, battery goes "0V" until revived (recharged) * Comes with plastic box which could be used as holder after some modifications (got D cell holder, put out springs and contacts from it and put them in this plastic box - I will probably attach image here) * I ... Read more

    0 0
  • posted byneyluz on 12/19/2013

    Good product, the overall finish of the product is more than o.k. I love the color (grey). The capacity of the battery's is o.k. but don't expect it to be 2400mAh, it's more like 2000 mAh if I have to believe others. I will discharge them with a amax charger, and upload a pic to give you guys and girls a better view of the total capacity. I use the ... Read more

    0 0
  • posted byChicT on 11/11/2013

    - They are protected from overcharging and over-discharging; - Relatively cheap price; - Not reliable, I used them in my flashlight; - Price would be very good IF they were reliable. I used them in my flashlight for almost a year, then one suddenly started smelling weird, and didn't charge either. I used a digital charger, not some cheap junk. Don't ... Read more

    0 0
  • posted byilyakamb on 02/17/2013

    Very long lasting. They fit my flashlights very well. Protection card at bottom of cell works very well keeps from over charging and low voltage from ruining the cell. Great product well constructed. None i know of Seems to last as long as the sku 20392 red and black batterys at about $1.25 USD per cell less cost.I have had no problems with any of them ... Read more

    1 1
  • posted byperror3 on 01/02/2013

    Protected which make me feel better. After all, lithium batteries can burn and something can go wrong when charging. Good price/performance. Yes, there are batteries with much higher stated capacity but those will cost more and with two batteries you can always have one charged as a backup. None that I have noticed. I use mine for a flashlight and get ... Read more

    0 0
  • posted byCaptKirk on 09/21/2012

    Great price for TWO, Rechargeable, 18650 size 3.7v Lithium, UltraFire quality, Good actual mAh rating, Protected from under and over charging, One charge has lasted from the day I got them till now in a high brightness flashlight (FandyFire F102 Cree XM-L T6 600LM #128101) Great fit (even protected these do not seem "too long to fit" like others Come ... Read more

    0 0
  • posted byraymode on 05/18/2012

    so far no recharging issues, they holds charge for a long period, no degradation in performance after approximately 15 drain/charge cycles the ones that i received were manufactured slightly longer than standard size, they required a significant amount of force to put them into the charger. these are all circumstantial personal observations no actual ... Read more

    0 0
  • posted byspeedy9 on 02/15/2012

    Good capacity Almost no self discharge Protection circuit works as expected. No that I could think of. They are a bit longer than standard 18650s due to protection circuit. It might be a problem in some application when battery sockets are tight. I didn't measure the real capacity so can't say if it's real 2400mAh. But accus performance is good enough ... Read more

    0 0
  • posted byPumaLBust on 12/15/2011

    -build quality is good -built-in circuit to prevent overcharge -near 2400mAh The foil that holds together the battery and the circuit can be damaged at the edges. This haven't casued any problems yet, the battery is still in one piece, so it's seeming to be an aestethic problem only Good choice to power led flashlights or any DIY project that requires ... Read more

    0 0
  • posted bythunder1313 on 11/24/2011

    Very long lasting. They fit my flashlights very well. Protection card at bottom of cell works very well keeps from over charging and low voltage from ruining the cell. Great product well constructed. None so far, they are just great, work very well. Best ones for the money that I have found so far. Seems to last as long as the sku 20392 red and black ... Read more

    0 0

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