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UltraFire

3.7V Li-ion Rechargeable Battery

3.7V Li-ion Rechargeable Battery

Regular price $12.55
Regular price Sale price $12.55
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The 3.7V Li-ion Rechargeable Battery is a Heavy Duty capacity 18650 battery for high drain devices. With tremendous capacity and value, the Ultrafire 4000mAh 18650 is a high-powered li-ion battery that is perfect for demanding electronics such as tactical LED flashlights. These batteries feature 3.7 Volts of power and a top-of-the-line 4000mAh capacity that will keep high drain electronics running longer than competing power sources. Combined with reliable manufacturing quality and bulk value pricing, the Ultrafire 18650 is one of the best deals when it comes to li-ion power.

PCB PROTECTED

Each Ultrafire 18650 is outfitted with a uniquely designed PCB (printed circuit board) that functions as the brain of the battery, regulating output and intake of electrical charge. Thanks to the circuit board the battery is always safe to use and charge, as it will cut off the battery if the voltage drops below 2.5V or exceeds 4.25V. You can rest assured that your battery will perform perfectly every time since it’s PCB protected!

SPECIFICATIONS

Battery Terminal Type: Button Top

Capacity: 4000mAh

Composition: Lithium-Ion

Nominal Voltage: 3.7V

Cut-off Voltage: 2.5B

Internal Impedance: ≤ 180 Milli-Ohms

Cycle Performance: 90% of initial capacity at 400 cycles

Type: 18650 Li-ion Rechargeable Battery

Charge Cycles: 500

Color: RED

Dimensions: 66.0 mm x 18.0 mm

Weight: 26.5g

Battery Shelf Life: 3 Years

Brand: UitraFire

Compatible with: Battery appliances such as Emergency Lighting, Flashlights, Portable Devices, Power Tools.

    FEATURES

    • 18650 Lithium ion Cylindrical Rechargeable Battery
    • Internal PCB protection prevents under-voltage (2.5V) or over-voltage (4.25V)
    • Higher energy density than competing rechargeable batteries
    • International Electrotechnical Commission (IEC) standard tested to ensure capacity, quality, and lifespan
    • Great for LED flashlights and high drain devices
    • Environmentally friendly
    • 100% Brand New

    CONTENTS

    UltraFire 18650 4000mAh 3.7V Li-ion Rechargeable Single Battery

    Based on 30 reviews
    80%
    (24)
    17%
    (5)
    3%
    (1)
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    Electric

    Stunned at how well designed this is. Get one and enjoy the zap yourself.

    Small but effective deterrent

    This product is small in size, hefty in weight and has a built in safety switch, which must be turned on before depressing the “fire” button. The crackling, electrical sound and lights it emits when the “fire” button is depressed is intimidating so no, I definitely won’t test it on myself. In short, I like it and will carry it with me for those unexpected events”.

    Loud, actually rechargeable, and discreet

    I have carried several different brands of stun guns and this one is my favorite so far. Other brands are great at first but either won’t hold a charge or won’t recharge even though they are supposed to. No problem at all with the pain pen. Luckily I have never had to actually use it on an assailant so I can’t speak to the effectiveness of the shock intensity, it’s impressive volume has been enough. I also really like that I can carry it subtly in my pocket so I can easily keep it hidden.

    They don’t require batteries!!! 😃

    Thankfully, I have not used them on any one or thing!

    Works great.

    I feel safer , it will be great for close encounters.

    Stealthy help

    It clips to my pocket while I ride my bike. It’s not going to down a rhino or anything but it has quite the sting. A little thing for a little piece of mind.

    Worth It!!!

    Okay, first, I would like to say that this pen is great to have as part of my EDC. I bought it back in 2020 during the riots when I was updating my EDC. My primary weapon is my 2nd Amendment, followed by my Fox knife, and I wanted to add a tazer to the mix with the rest of my EDC. Then this pen came up on my search bar. The pen still works to this day and I had it for 4 years! I did have to use it once when I got attacked when someone tried to rob me at knife point. My mind told me to reach for my primary then I remembered I had my pen so I took it out. The robber came at me and tried to stab me but I was quicker and I used the pen straight into his face. That ended that fight and he screamed, dropped his knife, and ran away. I highly recommend this pen for both your EDC you won't regret it.

    Personal protection...

    Protection

    Nice taser

    It is good for what I was wanting it for which was to use as a warning when the dogs got to acting up or to scare off dogs that would come running at us when we were out walking. I wish it had light like my other one does. It functions quite well.

    PENN33

    Love them

    Protection

    Great little stun pen for personal protection.

    c
    Pain Pen 25,000,000* Stun Gun
    christopher dashney
    Shockingly awesome

    Didn't think this was going to be worth it but works great and well built

    Protection tool

    I like that it is small but powerful. Easy to conceal.

    Great for bikepacking

    Fast delivery & as described. For the boogie man

    Stun

    I enjoy them very easy to use.

    Excelente producto

    Me encantó

    Security

    I gave it to a friend of mine and she likes it

    Great size and look

    I love how small this is. It really looks like it could be a pen and the color is really lovely. It seems to pack a punch but I haven't tested it on myself. The safety button is really easy to use to prevent accidental hits. Just remember to put the safety back on after anytime that you turn it off. From how the buttons look, I would encourage folks to keep them out of reach of any children in the house

    You need to protect yourself and this is non-lethal

    The STREET WISE SECURITY PRODUCTS Pain Pen is a must-have for personal safety. This compact stun gun cleverly disguises itself as a regular pen, making it discreet and easy to carry. With a powerful output, it delivers a stunning 25,000,000 volts, providing effective protection in emergency situations. I appreciate its lightweight design and how effortlessly it fits in my purse or pocket for quick access. The user-friendly operation ensures that anyone can use it effectively. This device gives me peace of mind, knowing I'm prepared for unexpected situations. Overall, a smart investment for anyone prioritizing personal security. Highly recommended!

    Awesome product...

    Item arrived and I am very pleased...

    Compact size

    I Do not like the small battery life

    Easy to use

    Colors were nice

    Safety feature doesn't work

    The main feature of the pen works fine, and honestly I like it. I just have a problem with the safety feature. Turning the switch down does not power down the device, so if the main button is pressed by accident, I'll end up taking myself or someone else, and therefore i won't even risk bringing it with me anywhere. Which kind of defeats the purpose of me buying it. Other than that, I really do like it. Maybe I just got one where the safety feature doesn't work?

    Great tool

    This was a gift to my granddaughter she loved how easy it is to deploy and the noise it makes as a warning to those people.

    Powerfull

    The snap gets anyone near immediate attention .

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