Views: 0 Author: Site Editor Publish Time: 2022-02-12 Origin: Site
How to choose a bluetooth speaker?
The transmission distance of Bluetooth speakers is also a problem that everyone is more concerned about. The transmission distance of the Bluetooth speaker has nothing to do with the Bluetooth version, but mainly depends on the advanced level of technology. The standard transmission distance of PowerClass2 is 10 meters; while the upgraded PowerClass1 increases the transmission distance to 100 meters and provides Hi-Fi stereo effects. Generally speaking, the distance between the mobile phone and the Bluetooth speaker is not too far, and the safe transmission distance is about 10 meters. Bluetooth speakers on the market all reach the 10-meter standard.
When consumers purchase Bluetooth speakers, they often see numbers such as Bluetooth 1.1, 1.2, 2.0, 2.1, 3.0, 4.0, etc. These numbers represent different versions and also represent the anti-interference ability of Bluetooth speakers. In 2012, 2.0 was the most common, 3.0 was the new mainstream, and 4.0 was just launched. Different versions of Bluetooth are related to the quality of the received signal. The new version puts more emphasis on overcoming noise interference. All new versions are backward compatible, and consumers should measure price and demand when purchasing.
All Bluetooth digital speakers have built-in batteries, making them truly wireless. The quality of the built-in battery directly determines the playback time and service life of the Bluetooth digital speaker. Before purchasing, please carefully inquire about the actual playback time and the number of times of repeated charge attenuation. It is recommended that consumers choose a polymer lithium battery as much as possible when choosing a Bluetooth speaker, without the danger of explosion.
Type of battery:
1) Polymer battery
Advantages: safe and efficient, and the soft package has no hidden danger of explosion.
Disadvantages: There are many types, and the price difference between pure cobalt (good) and pure manganese (poor) polymer batteries is several times.
2) 18650 battery
Advantages: excellent performance, charging and discharging can reach the upper level (mostly used for notebook batteries), explosion-proof protection
Disadvantages: There are many disassembled batteries and old batteries. The same 18650 battery is 5-10 times the difference between good and bad
3) Aluminum shell battery
Pros: very cheap
Disadvantage: poor performance. Without any explosion-proof measures, the consequences of an explosion would be unimaginable.
Battery protection board:
1) The charge and discharge protection of the battery protection board of the brand-name battery is relatively poor, and it is unstable and easy to damage the battery cell and electronic equipment.
A good-quality battery can reach 80% of its initial capacity after 500 charges and discharges. Poor quality batteries can't even reach 50% of their initial capacity after 100 charges and discharges.
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