1. What is the wattage used for?
Every electrical device has power usage. If the power of the battery is not up to that, it cannot be carried.
2. The difference between mAh and Wh.
Although it has been briefly introduced above, this is the most misleading point, so let me explain.
To sum up in one sentence: When you only look at mAh, you can't know what the real capacity is, because the power of electrical appliances is not the same.
mAh (milliamps) is a unit of electricity that represents the amount of charge, Q, that a battery can hold or discharge.
The common one is: we will say the capacity of the mobile phone battery or power bank, how many mAh.
Wh is a unit of power consumption and represents the work that the battery can do.
Wh is read as watt-hour, and 1 kilowatt-hour (kWh) = 1 kilowatt-hour of electricity.
Conversion between Wh and mAh: Wh*1000/Voltage = mAh.
Therefore, the mAh marked by most portable battery power station merchants is converted by the voltage of the mobile phone 3.6V, which shows a large capacity.
For example: 600Wh, which can be converted to 600 * 1000/3.6 = 166666mAh.
in conclusion:
1. Portable battery power station with relatively small power (below 300W) depends more on mAh, because what is more concerned about is: how many times the electric device can be charged.
2. Portable battery power station with high power (above 500W) depends more on Wh, because it can better calculate the power supply time for high-power electrical equipment.
For example, a 500W rice cooker + a 600Wh portable battery power station can directly calculate the usable time: 600 / 500 = 1.2 hours. If it is expressed in mAh, it is more difficult to calculate.
3. Charging method
Mains (charging at home)
car charging
Solar panel charging (outdoor)
If you stay outdoors for a long time, or if you are outdoors for a long time like a RV, solar panels are still necessary.
When buying a portable battery power station, different brands will have a set combination: portable battery power station + solar panel (the price will increase).
4. Extensibility
Two portable battery power stations are connected in parallel to increase power.
A portable battery power station+1~2 power packs.
The power pack can only be used as a battery, and it can be used together with the portable battery power station, which has much less functions than the portable battery power station.
5. Output waveform
Only pure sine waves will not damage electrical appliances, especially digital devices, so pay attention when purchasing.
