Ultrafire 2400mAh 3.7V Protected 18650 Rechargeable Batteries

Ultrafire 2400mAh 3.7V Protected 18650 Rechargeable Batteries

4 (13 product reviews)Added 4 years ago
US$ 5.41 Free worldwide shipping!
DealExtreme
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)
Apr 2016by Byrkylik
Хорошее качество батарей. 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...translate
Nov 2015by virtualsoy
prestaciones reales. 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.translate
May 2015by Fokos
Useful battery. 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...translate
Jul 2012by Gekkie
Great Li-ION pack. 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...translate
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