Home Batteries 18650 Battery UltraFire UF18-3400 USB Rechargeable 3400mAh 3.7v Protected 18650 Li-ion Batteries (2-Pieces)

UltraFire UF18-3400 USB Rechargeable 3400mAh 3.7v Protected 18650 Li-ion Batteries (2-Pieces)

SKU:8374 BRAND:UltraFire
USD $28.99
Flashlight, just is UltraFire. Global sales of leading brands, good torch, good service!Why UltraFir ... More
3 reviews
United States
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  • Type : US18-3400

    Capacity : 3400mAh

    Voltage : 3.7V

    Weight : 49g/1pcs

    Size : 69*18*18mm

Flashlight, just is UltraFire. Global sales of leading brands, good torch, good service!

Why UltraFire UF-3400 USB Rechargeable 3400mAh 18650 battery worth to buy? 

1)Long Run-Time: 3400mAh Actual capacity Premium Energy Efficient High-Output, 100% capacity 18650 can make your flashlight work over 8 hours. 

2)Durable: Batteries rechargeable up to 500 times! 

3)Built-in PTC: Using an innovational positive protection circuit and its positions on the positive of battery which is different from traditional circuit protecting board placement, that acts as a circuit breaker to shut down the battery if it gets too hot

4)Triple Overheat Protection: automatically protects against overcharge, over discharge and short-circuiting. 

5)External safety features: equipped at both ends with a nickle-plated S.S protector ensuring high impact resistance, good electrical conductivity and oxidation resistance; tough plastic circuit board protector; coated with durable metallic film to guard against abrasion. 

Please Notice: Since protected board was compatible with USB-Micro charging, the length (69mm) is longer than conventional 18650 battery. Please take carefully consideration before using on other devices.

WARRANTY: Rechargeable batteries are warranted for one year from the date of purchase.

Packing list:

2PCS*USB 3400mah Battery

2PCS*USB Cable

3 reviews
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What others are saying
  • Today i receive my order from you. Everything is just great and thank you for the gift you added to my order. It was a werry nice little lamp that one gone be in my pocket every day. Your product are high quality. I have my old lamps for over 7 year untill i lost it.

    -------- G Bergkvist

  • I have been very impressed by the quality of your products. I will be happy to keep receiving your donations for as long as possible, and acknowledging your kindness on communications like the one below.

    -------- Carlos Landaburu

  • Your flashlights are just amazing! Brightest light I have ever seen in my life and beautiful quality construction. I just placed another order for my family, will buy more for friends and family. Please please keep providing this world your wonderful products.

    -------- Mac Tran

  • Super high beam. Small enough to put in purse or deep pocket but with very strong beam. Long lasting batteries. My grandson loved it so much, he wanted another one to have one in car and one in house!

    -------- NDR

  • The flashlight is very bright compared to ones I've bought in stores and for half the price. I love that it's rechargeable and comes with different cords depending on your charging preferences.

    -------- Countryboy333

  • Excellent light,batteries,charger. I'm buying this same 502b for 4 yrs, giving old F-lights to friends & family, excellent for self defense, carry it on my belt loop all the time.

    -------- Enzo

  • So far, this thing is BRIGHT. I'm talking, able-to-see-it-on-a-sunny-day bright. It was also a pleasant surprise to see that it came with a spare battery. I'm taking it camping this weekend, so if I have any problems with it, I will update.

    -------- Mike "The Hurricane" Simpson