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HW 3.7V USB Rechargeable Lithium Batteries, Reliable True 3500 mAh (13000mWh) 18m Long-Lasting High Performance Battery, for Flashlights, Headlamps, RC Cars (2 Pack)

    • Based on 89 reviews
Condition: New
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Availability: In Stock.
Fulfilled by Amazon
Arrives Sunday, Mar 2
Order within 7 hours and 16 minutes
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Features

  • Note: THE BATTERY IS BATTOM TOP TYPE, , size is 70MMX 18.5MM, slightly 5mm longer than a regular 18650 battery due to its higher capacity. Please check if your device is compatible with the battery. HW usb rechargeable batteries- 3.7V lithium batteries used for flashlight, toys, headlamps and other household devices. This product is NOT sold with restricted lithium-ion standalone batteries.
  • Reliable True Capacity 3500 mAh: HW 3.7V 18mm Rechargeable Battery provide actual 3500mah capacity, long-lasting and reuseable. Those batteries that claim to exceed 5000mah, their actual capacity will be much lower.
  • Built-in micro USB port - easy to charge with the included 2 in 1 USB cable, no additional battery charger required, just plug into any USB port at anytime and anywhere, more than 1200 cycles, eco-friendly and save money.
  • Safety Assurance - built-in integrated safety circuit protects battery from over-charge, over-discharge, short-circuit and over-heat, ensures complete safety for the battery charging
  • High performance - HW 3.7V Li-ion batteries with 3500mAh capacity, support stable 3.7volt output voltage, makes the devices work more stable and lasting longer, great replacement batteries for high frequently used devices.
  • [Environmentally Friendly Rechargeable 3.7v Battery] As a professional battery manufacturer, HW always adheres to the research and development of efficient and energy-saving rechargeable batteries. Compared to alkaline batteries, rechargeable batteries have over 1200cycles, low self discharge, and constant voltage, providing more stable power supply to devices. Recyclable charging for use, saving expenses and reducing environmental pollution.
  • Note:The batteries were only precharged 50%-60% of capacity - Please fully charge the batteries when you get it, new battery can achieve the best performance after experiences 3-5 cycles of charge & discharge.

Number of Batteries: 2 Lithium Ion batteries required. (included)


Brand: HW


Battery Cell Composition: Lithium Ion


Recommended Uses For Product: Gaming Controller ProTac HL 5-X USB, PolyTac 90 X USB, Right Angle Light, PolyTac X USB, ProTac 90 X USB, ProTac HL USB, ProTac HL-X USB, ProTac HL USB Headlamp, Siege X USB See more


Unit Count: 2.0 Count


Product Dimensions: 2.56 x 0.71 x 0.71 inches


Item Weight: 3.88 ounces


Item model number: HW18M


Batteries: 2 Lithium Ion batteries required. (included)


Date First Available: June 21, 2023


Manufacturer: TIGER HEAD HI-WATT BATTERY (HK) CO. LTD


Country of Origin: China


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Sunday, Mar 2

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

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Top Amazon Reviews

    • Very good batteries
I bought these for a Bauer light I purchased. Fits perfectly, and it lasts a long time. It is nice to have two, just in case.
Reviewed in the United States on June 26, 2024 by Benjamin Berland Jr.
    • Fits Fenix Headlamp, even though slightly longer than original battery
Review Image by Anonymous Customer Anonymous Customer
Review Image by Anonymous Customer Anonymous Customer
As stated in the description this battery is slightly longer (3mm) than a typical 18650 due to the higher mAh, (3500 vs 2600 mAh) but it still fit without issue in my Fenix headlamp. Fenix also states that 3.6 or 3.7 volts is acceptable on their website , which is the only other factor I was concerned about. I was a little worried when I put the battery in and my headlamp did not turn on. I put the battery back in several times before it finally turned on my light, but after I waited a little while. I think it may take a minute for the battery to go through its protection check when first installed, so if you have a similar issue just wait a minute before trying to turn on your headlamp. After that first minute of not working my headlamp now starts consistently the first time.. This battery was just installed and appears to work as expected. The brightness is equal to the original which was simply getting old and dying out considerably faster than when I first got this headlamp. I will update this review if the battery life does not live up to my expectations as I cannot judge that factor for years to come (hopefully). So far so good though! ... show more
Reviewed in the United States on November 25, 2024 by Anonymous Customer Anonymous Customer
    • Batteries work great, plastic box arrived in pieces
Bought these for my headlamp. The batteries work great, charge in a charger or with the built in charger inside the battery. The plastic box that came with them arrived in pieces.
Reviewed in the United States on November 13, 2024 by r1zr1z
    • Spare Batteries for a new Flashlight.
I actually read a review that was upset because you had to take these out of the flashlight to recharge. Well since my flashlight only uses one, that's not a problem. I love that they recharge with a micro USB cord, which it came with, and has to plugs, so you can charge both batteries at the same time. I've not had a need for them yet, but when I do, I will be glad I have them. ... show more
Reviewed in the United States on January 10, 2025 by J. A. Hart
    • Not practical
These work, but they're not super practical. Having to remove batteries from devices to charge them means that they're just not going to get charged very often.
Reviewed in the United States on December 20, 2024 by Matt
    • Flashlight spare
I like the fact that you can charge them without a charger.
Reviewed in the United States on January 2, 2025 by David S.
    • Functionality
Ability to charge two batteries at the same time. Charged quickly. Fit device just like the originals .
Reviewed in the United States on December 23, 2024 by Ed
    • Quality.
Shipped rapidly. Highly recommended.
Reviewed in the United States on January 10, 2025 by Amazon Customer

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