capacity
For short-term emergency, it is recommended to choose 5000 mAh products. It is recommended to choose 10,000 mAh for business trips. Generally, it is higher than 15000 mAh or less than 3000 mAh. The practicality will be greatly reduced.
Batteries
The current mobile power supply mainly uses liquid lithium ion batteries and lithium polymer batteries, and the relative output efficiency is stable, while the lithium polymer batteries are lighter, safer and more efficient than liquid lithium ion batteries.
Conversion rate
The conversion rate is too low, the line loss of the mobile power supply will be very large, and there may be heat or even an explosion. Products with a conversion rate of around 85% are already excellent. If the conversion rate is declared to be over 90%, it is likely to be false.
Product compatibility
There are many kinds of digital products, and the circuit design and interface are not the same. Before you buy, you must first find out the interface, voltage and other information that your electronic products need. If you can try to bring it to the counter.
Accessories and additional features
If there are multiple charging adapters, the range of use can be extended. The dual interface can charge two electronic products at the same time, and the LED lighting can be used for emergency. In addition, the solar charging function is too slow and belongs to the chicken rib function.
Choose a branded product
Try to choose a branded product. The establishment of a brand requires advertising, and more needs word of mouth. Choose a more well-known mobile power brand, product quality may be better, more secure, and future after-sales service is in place.
TIPS: It is worth noting that the price of charging treasures is very different now, and it will generally vary depending on the type, brand, design and function of the battery. To measure the advantages and disadvantages of a mobile power supply, from the aspects of charging performance, durability, safety, conversion efficiency, appearance, etc., the price is only one of the reference standards, and the quality cannot be completely determined.