Test/Review of UltraFire UF26650 5000mAh (Flame)

HKJ · 17.04.2013, 23:20

UltraFire UF26650 5000mAh (Flame)

Official specifications:

Brand: UltraFire
Color :Black + red
Type :Lithium Ion
Model :26650
Mark Capacity :5000mAh
Actual Capacity :4000mAh
Battery Voltage: 3.7V V
Rechargeable: Yes
PCB Protected Board :No
Application :Power supply
Working voltage: 3.7V
Charging limited voltage: 4.20+/-0.02V
Standard voltage: 4.2V
Discharge cut off voltage: 3.00V
Charging Current: 0.02 C5A (80mAh)
Standard charging: 0.5 C5A (2000mAh)
Standard discharge: 0.5 C5A (2000mAh)
Quick charging current: 1 C5A (4000mAh)
Max continual discharge current: 1 C5A (4000mAh)
Operating Temperature: charge: 0°C~45°C; Discharge: -20°C~60°C

These batteries are protected 26650 and the limit is rather low for the size.

The two batteries tracks very fine.

It looks like the protection on the B battery trips just before the 5A trace is finished.
The reason the voltage increases, is due to a chain of events: First the protection disconnects the battery, because the voltage now is below the minimum voltage my load disconnects, without any load the protection in the battery reconnects, the voltage is now higher because it is unloaded, I measure the voltage and stops the discharge cycle (All this happens in less than 1 second).

Conclusion

These batteries has a good performance for cheap batteries, except for the "low" current limit I do not have anything to complain about.

Notes and links

The batteries was supplied by LightCastle for review.

How is the test done and how to read the charts
How is a protected LiIon battery constructed
More about button top and flat top batteries

blindnick · 17.04.2013, 23:42

неплохой аккумулятор вроде - сопротивление, ёмкость, токоотдача
а то расцветка ОЧЕНЬ сильно напоминает огненную ткрмоусадку трастфаера, если перепутаешь - немного потеряешь

Shadowww · 18.04.2013, 01:12

Цитата:

Сообщение от blindnick :

неплохой аккумулятор вроде - сопротивление, ёмкость, токоотдача

Где тут неплохая токоотдача то?

Неплохая токоотдача это 2C, тут еле-еле 1.2C наскребается.

MOHAPX · 18.04.2013, 09:05

0,08 ома много. У кингконгов 0.05.

17.04.2013, 23:20	1
HKJ Модератор своих разделов Регистрация: 03.07.2010 Последняя активность: 10.10.2022 08:53 Адрес: Copenhagen, Denmark Сообщений: 1652 Сказал(а) спасибо: 0 Поблагодарили: 2982 раз(а) в 1024 сообщениях	Test/Review of UltraFire UF26650 5000mAh (Flame) UltraFire UF26650 5000mAh (Flame) Official specifications: Brand: UltraFire Color :Black + red Type :Lithium Ion Model :26650 Mark Capacity :5000mAh Actual Capacity :4000mAh Battery Voltage: 3.7V V Rechargeable: Yes PCB Protected Board :No Application :Power supply Working voltage: 3.7V Charging limited voltage: 4.20+/-0.02V Standard voltage: 4.2V Discharge cut off voltage: 3.00V Charging Current: 0.02 C5A (80mAh) Standard charging: 0.5 C5A (2000mAh) Standard discharge: 0.5 C5A (2000mAh) Quick charging current: 1 C5A (4000mAh) Max continual discharge current: 1 C5A (4000mAh) Operating Temperature: charge: 0°C~45°C; Discharge: -20°C~60°C These batteries are protected 26650 and the limit is rather low for the size. The two batteries tracks very fine. It looks like the protection on the B battery trips just before the 5A trace is finished. The reason the voltage increases, is due to a chain of events: First the protection disconnects the battery, because the voltage now is below the minimum voltage my load disconnects, without any load the protection in the battery reconnects, the voltage is now higher because it is unloaded, I measure the voltage and stops the discharge cycle (All this happens in less than 1 second). Conclusion These batteries has a good performance for cheap batteries, except for the "low" current limit I do not have anything to complain about. Notes and links The batteries was supplied by LightCastle for review. How is the test done and how to read the charts How is a protected LiIon battery constructed More about button top and flat top batteries __________________ My website with reviews of charges, batteries and other stuff: http://www.lygte-info.dk/

17.04.2013, 23:42	2
blindnick Jagd Beutelratte Регистрация: 05.07.2011 Последняя активность: 15.08.2019 17:54 Адрес: колхозник Сообщений: 20466 Сказал(а) спасибо: 2365 Поблагодарили: 6706 раз(а) в 4640 сообщениях	Re: Test/Review of UltraFire UF26650 5000mAh (Flame) неплохой аккумулятор вроде - сопротивление, ёмкость, токоотдача а то расцветка ОЧЕНЬ сильно напоминает огненную ткрмоусадку трастфаера, если перепутаешь - немного потеряешь __________________ трол.

18.04.2013, 09:05	4
MOHAPX Регистрация: 08.06.2011 Последняя активность: 02.11.2023 21:50 Адрес: Украина Сообщений: 7396 Сказал(а) спасибо: 1935 Поблагодарили: 2291 раз(а) в 1027 сообщениях	Re: Test/Review of UltraFire UF26650 5000mAh (Flame) 0,08 ома много. У кингконгов 0.05.