1. Capacity
The capacity is the most important! The larger the capacity of the outdoor power supply, the longer the power supply time! Battery capacity is one of the most important performance parameters to measure the performance of the battery. It indicates the amount of electricity released by the battery under the corresponding preconditions. That is, the capacity of the battery, so the larger the battery capacity of the outdoor power supply, the longer the continuous power supply time.
The difference between mAh and Wh:
The battery capacity of a power bank or a mobile phone is usually mAh, which means that the larger the battery capacity, the longer the battery life, while the outdoor power supply generally uses Wh (watt-hours). Both mAh and Wh are units of battery capacity, but the difference between the two The conversion methods are different, so it needs to be converted to the same unit to make an intuitive comparison.
Charging treasure unit: mAh
Outdoor power unit: Wh
mAh is the unit of [capacity], and Wh is the unit of [power]
The relationship between the two is: mAhx voltage ÷ 1000 =Wh.
If the voltage is the same, you can use mAh to compare the capacity of the same battery, but if you are comparing batteries of two different products, and their working voltages are different, you must use Wh for comparison. The unit of battery capacity is Wh (watt hour), 1 kilowatt-hour = 1000Wh, and the common power supply capacity on the market is mostly around 1000Wh. However, the larger the capacity, the heavier the body will be. In order to facilitate our carrying out, it is best to choose a capacity that suits us.
2. Power
It depends on whether it is the rated power. The rated power refers to the power that the power supply can output stably for a long time. It is the most important standard in the power supply. Some merchants mark the maximum power, not the rated power. What electricity can drive
device.
Power represents wattage (W), which is different from watt-hour a (Wh) and milliampere (mAh). Wattage represents the output power of the outdoor power supply. It is recommended to choose a power supply above 500W.
If you need to drive a 100W projector and a 300W small rice cooker, choose a 500W outdoor power supply:
If you need to drive a 1000W electric kettle and induction cooker, choose an outdoor power supply above 1000W;
If you need to drive a 1300W microwave oven and a 1600W electric oven, choose an outdoor power supply of about 1200W-2000W.
3. Look at the type and quantity of power supply ports
AC port: 220V AC, which can be connected to sockets and various electrical plugs
USB port: supports mobile devices, mobile phone charging
Type-c: Huawei port, support laptop
DC port: straight flush port
Car charger: can be placed in the car to charge the power supply
PD, QC: fast charging, improving the charging efficiency of mobile devices
4. Shell
It is very important to choose the material of the outdoor power supply shell. Generally, it will be bumped, squeezed or hit when it is taken outdoors. Therefore, it is necessary to have a solid, durable and strong shell. Therefore, the shell material is also very important when purchasing an outdoor power supply. , generally include: plastic shell, aluminum all-gold shell.
Plastic case:
We all know that plastic has high insulation, so the plastic case can effectively prevent leakage, but the plastic case is not durable and easy to break.
Aluminum shell:
The aluminum alloy casing has the advantages of fireproof, waterproof and durable, which can effectively prevent cracks and impacts. It has relatively strong wear resistance and is more suitable for outdoor environments. The disadvantage is that the cost is too high and maintenance is difficult.
5. Charging method
At present, most outdoor power supplies have the first three methods:
Mains charging, that is, AC charging
Car charging Q
solar charging
generator charging
6. Volume and weight
The advantage of the outdoor power supply is that it is small in size, and it can be carried like a small box. It is not afraid of taking up space in the car, and it is relatively light.
7. Extra points
Is it equipped with LED lights, which can be used as home backup lights or outdoor lighting?
Whether there is a mobile APP remote monitoring function, the switch can be controlled by the mobile phone
Whether it can support wireless charging, if you have this demand, you can pay more attention
Appearance, appearance is quite important for appearance control, the coexistence of strength and appearance is the most perfect
Is the casing wear-resistant?
