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Nowadays, environmental protection awareness is more and more important. Some 3C products that are high power consumption are often replaced batteries if they use disposable batteries. Rechargeable batteries is not only reduce the amount of discarded batteries, but also save money for a long time usage. 
However, there are many specification for rechargeable batteries in the market. Do we need to prepare different kinds of battery chargers to fit for different kinds of rechargeable batteries? The answer is “No”
In this case, it is important to find a good battery charger. 
Today, let me introduce Zanflare battery charger C4 which is simple look but has a full function. 
 
Specification: 
⦁ Dimension: 17.5 cm x 9.5 cm x 3.5 cm
⦁ Weight: 0.27kg
⦁ Housing materials: ABS
⦁ Input: AC 100 - 240V, 50 / 60Hz, 0.6A max, DC 12V, 1.5A
⦁ Rechargeable battery specification: 18650, 26650, 26500, 22650, 18490, 17670, 17500, 17355, 16340, 14500, 10440, A, AA, AAA, SC sizes
⦁ 4 different charger current: 300mA / 500mA / 700mA / 1000mA
⦁ Discharge current: 300mA / 500mA
⦁ Environmental conditions of use: humidity 5%-90% ; temperature: 0 °C - 40 °C
 
 
▼The appearance of box which is mentioned 4 different charge current option (will explain more details later) 

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▼It can be used as a power bank. If you insert two or more 18650 lithium batteries in the charger, it can supply 5V/2A charging performance. 

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▼Main unit and user manual can be seen after opened the box. 

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▼Contents: 1 x battery charger, 1 x power cable, 1 x car plug (Banana head), 1 x user manual 

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▼Detailed explanation in user manual 

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▼Let’s take a look for the charger. The assembly is so sturdy. The top is the cooling holes. 
4 independent battery slots and buttons. The spring metal gaskets are in each slot.  LCD display is under the slots. The mode switch button is at the lower left corner of the screen. The current switch button is at the lower right corner of the screen. 

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▼Back view of charger. The holes at the back are also for cooling. It is very important for heat dissipating during the charging process. There are also 6pcs anti-slip pads.

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▼After plugging in the power, it would display “null” if no batteries are inserted. The information of 4 battery slots are independent. 

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▼The charging current of 4 battery slots can be selected 
Up to 15 different sizes of rechargeable batteries included Ni-MH/Ni-Cd. The spring metal gasket in the slot can be adjusted according to the size of the battery. 
Different batteries can be mixed and charged simultaneously

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▼In the picture is AA battery (Asia is called 3rd battery) 

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▼4 batteries are charged at the same time which is used 500mA for charging. 

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▼ 4 different current charging: 300mA / 500mA / 700mA / 1000mA

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▼After battery is inserted to the charger, the battery logo would be flashed on the screen within 10 seconds. At this time, you can press the “Current” button to switch the charging current, or press “Mode” button to switch 3 modes. It is “Charge”, “Fast test” and “Nor test”
If you want to change the setting after that, you can long press the number button to make the changes. This design is quite prefect. 

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▼Different information is displayed when you press the number button above each of battery slot during charging. From left to right, it is Voltage, capacitance, resistance and current. The charging time can also be displayed.  

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▼What is the meaning of FAST Test mode and NOR Test mode? 
⦁ FAST Test mode: Discharge first and then recharge the battery
⦁ NOR Test mode: Full recharge first and then discharge the battery. After that, the battery is recharged again. 
This is actually the function of the activated battery, which can avoid the memory effect of the battery. The deep charge and discharge cycle can also improve the chemistry reaction in the battery. The disadvantage is that it takes for a long time (depending on the current setting)
 
The picture shows the time for each test mode under using AA battery (AA battery need around 9 hours to compete the test. That means it would take longer time for other types of batteries)  

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▼Testing completed. 

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Advantages: 
Compared with other chargers, 4 battery slots are operated individually for charge and discharge and display information. It is very convenient. The aim is for different type of batteries for different actions, it is equal to arbitrary charge and discharge. 
The charging current can be set to avoid excessive current to shorten the life of rechargeable battery. 
Although 4 battery slots are not too many, it should be enough for general families’ usage. 
The function of the activated battery can extend the life of some type of batteries
It can be used as a power bank for emergency in outgoing. 
 
If you have an interest in it,check the link below:https://amzn.to/2KlJbeI
 
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