In the rapid growth of the digital product market, this trend is accompanied by the diversification of the product function, the large size of the display screen, the color screen and the lighter and smaller models. However, the realization of these features will accelerate the consumption of electricity and reduce the volume of the battery, especially the 3G function digital products require higher battery endurance.

The emergency charger is mainly to solve the problem of insufficient temporary electric quantity of these mobile digital products. Through lithium battery, solar panel or hand, the ordinary AA dry battery, as a storage unit, can supply or charge the mobile digital products at any time, anywhere, and carry through the appropriate voltage conversion. Electricity. At present, the market related products are Anymay, Wei Zheng technology, HP and other brands.
Classification by way of energy use
Ordinary charger: using ordinary household electricity and so on to provide energy through transformer.

Solar charger: using solar panels to collect solar energy

Wireless charger: the principle of using electromagnetic coupling

Handy charger: use of manpower

Dry battery emergency charging: using 1 sections to several dry batteries, providing emergency charging, generally can provide more than ten minutes of electrical energy.
Categorization of the types of products used
Mobile phone charger

Notebook Charger

Electronic Car Charger

Large charger and so on

Camera charger

Electric toy charger
Classification by way of use
Senior business charger: business travel charger, charging speed is very fast and very safe, the price is slightly higher than the general charger.

Seat charger: the unique, novel and beautiful appearance, convenient to carry, 200-3000mAH lithium ion (LI-ION) nickel hydrogen (NI-Mh) cell phone battery charging, built-in intelligent identification circuit, can automatically convert the charger output polarity to the battery positive and negative electrode, very good charging effect, is the ideal companion for home / Travel.

USB charger: with USB output interface, to MP3/4, digital cameras and other charging;

Line charger: direct charge for general mobile phones;

Vehicle charger: charger based on universal power supply on vehicle.
Classification according to raw materials
Ni MH Ni Cd charger

Lithium ion battery charger

lead-acid battery charger
The composition of the charger
1, shell

2. Input line, output line

3, circuit boards, heat sinks, various electronic components (capacitors, resistors, single chip, optical lotus, MOS, two, three, switch).

Calculation of charging time for editors
The battery capacity looks at the marking outside the battery, and the charging current looks at the input current marked on the charger. 1, the charging current is less than 5% of the battery capacity.

Charging time (hour) = battery capacity (mAH) * 1.6 * charging current (mA)

2, charging current is greater than 5% of battery capacity, less than or equal to 10%:

Charging time (hour) = battery capacity (mAH) * 1.5 * charging current (mA)

3, charging current is greater than 10% of battery capacity, less than or equal to 15%:

Charging time (hour) = battery capacity (mAH) * 1.3 * charging current (mA)

4, charging current is greater than 15% of battery capacity, less than or equal to 20%:

Charging time (hour) = battery capacity (mAH) * 1.2 * charging current (mA)

5, the charging current is more than 20% of the capacity of the battery.

Charging time (hour) = battery capacity (mAH) * 1.1 * charging current (mA)

Usage method
Take the emergency charger of the mobile phone as an example:

A single battery of 5 can provide sufficient power for mobile phones.

The specific use method is as follows:

1, unscrew the bottom cover of the charger, load a battery No. 5, and pay attention to the correct direction.

2, choose the appropriate connection line to connect with the mobile phone.

3. Insert the other end of the connecting line into the charger's output terminal.

4. When the indicator light on the charger is on, it means normal charging. It does not indicate that it is not charged or the electricity is full.

5, you can call while charging.

After charging for 90-180 minutes, the power of a five battery can be recharged to the battery of mobile phone. According to the condition of mobile phone and network, the cell phone can stand for about 12 hours.