شارژر باتری اتوماتیک دوراسل DURACELL مدل: CEF14 - این شارژر یک شارژر هوشمند میکروپروسسوری می باشد که دارای سیستم حفاظت در مقابل اضافه ولتاژ - جریان و دما جهت باتری داشته که در موقع شارز صدمه ای به باتری وارد نشود - این شارژر می تواند همزمان چهار عد باتری را شارز نماید - این شارژر قابلیت شارز باتری های قلمی سایز AA و نیم قلمی سایز AAA نیکل متال NiMH را داشته - دارای تغذیه ورودی 220 ولت بوده و دارای نشانگر چراغ LED جهت شارژ می باشد که در حالت اولیه چراغ قرمز بوده و با تمام شدن شارژ چراغ LED سبز می شود - بهمراه دستگاه 2 عدد باتری قلمی قابل شارژ با جریان 1300 میلی آمپر ساعت و 2 عدد باتری نیم قلمی 750 میلی آمپر ساعت مارک دوراسل وجود دارد- این شارژر یک شارژر کوئیک شارژ بوده و در طرف مدت 45 دقیقه می تواند باتری راشارژ کرده و طبق صحبت کمپانی سازنده به مدت 4 ساعت از باتری استفاده کرد - البته زمان شارژ کامل بین 4 الی 8 ساعت می باشد - ساخت کمپانی دوراسل DURACELL بلژیک - مونتاژ چین
Charger Duracell 4h CEF14
The only user interface is two red leds, one for slot #1 & #2 and one for slot #3 & #4, i.e. the charger can only charge two or four batteries at a time.
The led is red while charging and will flash on error. When charging is done they turn off.
Measurements charger
- When not powered it will discharge the battery with less than 1uA
- Steady red light is charging.
- Charge will restart charging after power loss, or battery insertion.
- Power consumption when idle is 0.42 watt
- Can only charge in pairs.
The two batteries are filled up and a bit more, the charger is on the slow side to detect when the batteries are full.
The 4 hours charge time did not work here, it took a bit more than 6 hours.
The supplied batteries was 1300mAh (See review) and here the charger could nearly charge in 4 hours. It needed 4½ hour, but if it had terminated when the batteries was full or had used full charge current, it would have been 4 hours.
With AAA cells the current is reduced and the charger reported error during my test run and terminated before the batteries was full.
The charger is not fast at detecting full cells, it used about 25 minutes.
Charge time is the same with 2 and 4 batteries in the charger.
M1: 39,4°C, M2: 44,4°C, M3: 42,8°C, M4: 37,9°C, M5: 46,2°C, HS1: 65,1°C
Even with this low charge current the batteries are warmed by the charger.
The charger need about 3 seconds from power is applied until it start charging.
But the initial charge current is not the full charge current, after about a minute the full current is applied.
There is no difference with 2 to 4 cell charging.
With AAA cells it will stay at the low charge current using pwm.
Trickle charging is done with pulses at full current, I wonder why they have different width.
Testing the mains transformer with 2500 volt and 5000 volt between mains and low volt side, did not show any safety problems.
Conclusion
This charger works best with batteries used in pairs, i.e. if all you equipment uses two or four batteries. I do not like chargers with that limitation, I prefer models that can handle each cell individually.
The charge speed on the package is nearly a lie, the 4 hours is only valid for some special low capacity batteries, for more normal batteries it needs 6 to 8 hours.
I also wonder why the charger failed to charge some of my cells.