1. Polymer Batteries
Advantages: Safety, no potential explosion hazard.
Disadvantages: Various types, pure cobalt (good) and pure manganese (poor) polymer battery price difference several times.
2. 18650 Batteries
Advantages: good performance, charging and discharging can reach the upper level (mostly used for notebook batteries), explosion-proof protection
Disadvantage: There are more dismantled batteries and old batteries. Similarly, 18650 batteries are 5-10 times better than bad batteries.
3. Aluminum Shell Batteries
Advantages: Very cheap
Disadvantage: poor performance. There are no explosion-proof measures, and the consequences of the explosion are unimaginable.
Battery protection panel:
1. The charge and discharge protection of battery protection board of miscellaneous batteries is poor, and unstable is easy to damage the battery and electronic equipment.
2. The unstable current output not only affects the sound quality, but also causes a lot of current sound.
After 500 cycles of charging and discharging, the battery with good quality can reach 80% of its initial capacity. Batteries with poor quality can not even reach 50% of their initial capacity after 100 charges and discharges.