What Is an Emergency Charger?

The emergency charger is mainly to solve the problem of temporary shortage of electric power of these mobile digital products. Through lithium batteries, solar panels or hand-cranked ordinary AA dry batteries, as a power storage unit, after appropriate voltage conversion, it can be realized anytime, anywhere, Power or charge mobile digital electronics on the go. Related products in the market include Anymay, Weizheng Technology, HP and other brands.

Emergency charger

The emergency charger is mainly to solve the problem of temporary shortage of electric power of these mobile digital products. Through lithium batteries, solar panels or hand-cranked ordinary AA dry batteries, as a power storage unit, after appropriate voltage conversion, it can be realized anytime, anywhere, Power or charge mobile digital electronics on the go. The current market related products are Anymay, Weizheng Technology,

By energy use

Ordinary charger: Use ordinary household electricity to provide energy through a transformer.

Solar Charger: Use solar panels to collect solar energy

Wireless Charger: Utilizing Principles of Electromagnetic Coupling

Hand-cranked charger: using human power

Emergency charging of dry batteries: The use of one to several dry batteries to provide emergency charging, generally can provide about ten minutes of power.

Classification by product type

mobile phone charger

Laptop charger

Electric car charger

Large chargers, etc.

Camera charger

Electric toy charger

Classified by usage

Advanced business charger: business travel charger, fast charging and very safe, the price is slightly higher than ordinary chargers;

Block-type charger: unique appearance, novel and beautiful, easy to carry, suitable for charging lithium-ion (LI-ION) nickel-metal hydride (NI-Mh) mobile phone batteries with a capacity of 200-3000mAH, built-in intelligent identification circuit, can automatically change charger The output polarity is suitable for the positive and negative electrodes of the battery, and the charging effect is excellent. It is an ideal companion for mobile phones at home / travel;

USB charger: with USB output interface, to charge MP3 / 4, digital camera, etc .;

Line charger: direct charging of general mobile phones;

Car charger: A charger that uses the universal power supply on the car as the power supply device.

Classified by raw materials

Ni-MH Ni-Cd Charger

Li-ion battery charger

Lead-acid battery charger

1.Shell

2.Input line and output line

3.Circuit board, heat sink, various electronic components (capacitance, resistance, single chip, optical amplifier, MOS tube, secondary tube, tertiary tube, switch tube)

For battery capacity, see the label on the outside of the battery, and for charging current, see the input current on the charger. 1. When the charging current is less than or equal to 5% of the battery capacity:

Charging time (hours) = battery capacity (mAH) × 1.6 ÷ charging current (mA)

2. When the charging current is greater than 5% and less than or equal to 10% of the battery capacity:

Charging time (hours) = battery capacity (mAH) × 1.5 ÷ charging current (mA)

3. When the charging current is greater than 10% of the battery capacity and less than or equal to 15%:

Charging time (hours) = battery capacity (mAH) × 1.3 ÷ charging current (mA

4. When the charging current is greater than 15% of the battery capacity and less than or equal to 20%:

Charging time (hours) = battery capacity (mAH) × 1.2 ÷ charging current (mA)

5. When the charging current is greater than 20% of the battery capacity:

Charging time (hours) = battery capacity (mAH) × 1.1 ÷ charging current (mA)

Take mobile phone emergency charger as an example:

Only one AA battery can provide sufficient power for the phone.

The specific use method is as follows:

1. Unscrew the bottom cover of the charger and insert a size 5 battery, paying attention to the correct orientation.

2. Select the appropriate cable to connect to your phone.

3. Plug the other end of the cable into the output terminal of the charger.

4. When the indicator light on the charger is on, it means normal charging; if it is off, it means not charging or the battery is fully charged.

5. You can call while charging.

After charging for 90-180 minutes, the power of one AA battery can be recharged into the mobile phone battery. Depending on the mobile phone and network conditions, the mobile phone can be standby for about 12 hours.