Ultrafire 2400mAh 3.7V Protected 18650 Rechargeable Batteries

SKU: 1283 (Added on -)
  • US$6.67

    19 %

  • 5.41
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Ultrafire 2400mAh 3.7V Protected 18650 Rechargeable Batteries
Due to new airline safety regulations announced by the ICAO, pure power products (e.g. Batteries, Power Banks) are currently not allowed to be shipped by Airline service with the exception of the following 18 countries:
Ireland, Austria, Poland, Denmark, France, Czech Republic, Luxembourg, Norway, Portugal, Sweden, Switzerland, Slovakia, Spain, Hungary, Italy,United Kingdom, Netherlands, Russia
Please note that any purchases for such items from countries other than these will be cancelled.
Note: We are currently unable to ship to addresses in HongKong, mainland of China.

The UltraFire protected 18650 rechargeable cell battery is equipped with a protection circuit board (PCB) on the negative pole. The PCB can protect the battery from overcharge, over-discharging, overload and short circuit, which can make the battery safer and longer lifespan. The battery is environment friendly and perfect for super bright flash and other devices.

- Protected against over-charging and over-draining
- Operating voltage: 3.70 - 3.80V
- Capacity: 2400mAh
- Maximum charge/drain rate: 1.5C
- Overcharging protection point: 4.2V
- Overdraining protection point: 2.75V

** Actual product bares "Ultrafire/Protector 2400mAh protected" markings. This image is taken from a sample battery. I'll update the picture shortly to the Ultrafire logo'd one.
Note: this battery's diameter is slightly larger than that of the unprotected batteries. Also, the  positive node of the battery is a lilttle recessed into the battery. So make sure your flashlight/application is compatible with this type of batteries.
Dimensions: 18.0mm (0.709") in diameter, 67.0mm (2.638") in height
Weight: 50g (1.76oz)
Shell material: Steel
Battery format: 18650
Designed voltage: 3.7V
Operating voltage: 3.7~3.8V
Designed Capacity: 2400mAh
Internal resistance: <= 120 mohm
Protection Kicks In: @2.75V and @4.2V
Optimal charging temperature: 0~45'C
Optimal usage temperature: -20~60'C
Optimal storage temperature: -20~60'C (65% humidity)

All packages from DX.com are sent without DX logo or any information indicating DX.com. Due to package variations from suppliers, the product packaging customers receive may be different from the images displayed.

To enable volume discounts on this site, use coupon code: BULKRATE during checkout. You will see a discount applied at the bottom of the shopping cart. Competitive pricing is available. Contact us for details.

Quantity 3+ units 5+ units 10+ units
Rate US$4.80 shipped US$4.78 shipped US$4.76 shipped

What is Bulk Rate? BulkRate is a semi-wholesale system with items priced separately from retail. When you use bulk rates, a flat $1.70 registered air mail fee will automatically be added to your cart to ensure delivery of package. While BulkRate's intention is to offer cheaper prices when you buy in bulk, because it is priced separately it on occassions show a higher than retail price. That's why we ask you to enter BULKRATE as a coupon code to manually activate the rates. You can always opt not to use the bulk rates. If you are looking for wholesale prices please feel free to contact us.

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Customer's impression:
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Recent Customer Reviews

  • Byrkylik Post on 4/1/2016

    Отличные аккумуляторы, емкость соответствует. Только одна проблема - плюсовой контакт коротковат и при подключении минуса одной батареи к плюсу другой нет контакта. Выхода два: либо напаять немного олова на плюсовой, либо... Read more


    0 0 0
  • virtualsoy Post on 11/4/2015

    Funciona correctamente y parece que cumple lo prometido. Se nota la calidad del producto. Llevo usandola a diario 6 meses y no ha bajado rendimiento.

    Impression:buena compra

    0 0 0
  • Fokos Post on 5/3/2015

    The battery came after one month to the Netherlands. It came pre-charged, I could try it immediately. The battery has the same size as two cells CR123A. So you can use it as a replacement in your flashligt, it is much to... Read more


    0 0 0
  • WoutH Post on 1/14/2014

    - It's protected, always a pro, worry less use more! - Easy to create a litihum pack (soldering it together) - Very solid, but not too heavy - Works like a charm - No ultrafire logo or other indications, as stated - Maybe... Read more

  • Gekkie Post on 7/10/2012

    This is a great Li-ION pack. I am using this in a homemade circuit and only have to recharge it after 1 week of running. The battery is a little big due to the proctection circuit. I was suprised that it came in a little I... Read more

Most Helpful Reviews

  • WoutH Post on 1/14/2014

    - It's protected, always a pro, worry less use more! - Easy to create a litihum pack (soldering it together) - Very solid, but not too a... Read more

  • dhruv497 Post on 5/13/2011

    -the battery is of good build quality -it is near to the actual stated capacity around 2200mah -the battery is protected so i don't worry... Read more

  • snowgrill Post on 7/22/2010

    Protected- Less dangerous Fits perfectly in my flashlight SKU 19767 and doesnt rattle Nice build quality Fast charge with SKU 06105 - The... Read more


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