01 Cell and battery capacity
Determine the safety and charging and discharging performance For rechargeable batteries, safety is always the first place. The safety performance of the rechargeable battery is largely determined by the rechargeable battery core. Rechargeable batteries are mainly divided into two types; one is 18650 cells, the other is lithium-ion polymer cells. Among them, 18650 cells are columnar, the appearance similar to the No. 5 battery, this battery because there is rugged shell protection, puncture resistance, resistance to deformation performance, but in extreme cases prone to accidents such as explosions; lithium-ion polymer cell appearance design without hard shell protection, the safety factor is worse than 18650. Of course, in line with national standards for the daily use of rechargeable batteries are not accidental, we need to pay particular attention to the use of rechargeable batteries in our daily lives habits. The capacity of the battery cell determines the length of use of portable power. But for the rechargeable battery, is the larger, more significant city, the better? I'm afraid not. Many places have introduced regulations to restrict the carrying of large-capacity rechargeable batteries, which may not necessarily be able to bring on airplanes, subways, and other means of transportation; besides, it is not portable to carry a "brick" rechargeable battery with you. We recommend a 10,000mAh-20,000mAh rechargeable battery capacity, which can achieve a balance of portability and actual charging capacity.
02 Protection circuit
Further, enhance the safety of rechargeable battery The main role of the protection circuit is to further ensure the safety of the rechargeable battery. The core of the protection circuit of the general rechargeable battery consists of a protection IC and power transistor. The role of the protection IC is to detect whether the rechargeable battery is in overcharge/over-discharge and to detect the surrounding temperature; and the power transistor is mainly, to prevent the battery from overcharging and discharging. Generally speaking, charging with a protection circuit is more valuable than charging treasure without a protection circuit. For rechargeable battery brands, the protection circuit is often the focus of promotional materials, look at a few different brands of official posters, I believe you will have the answer.
03 Fast charging compatibility
Decide to cover cell phone brands With the smartphone wired fast charging on stage, compatible with cell phone fast charging has also become one of the important selling points of the rechargeable battery. Can be sold on the high price of charging treasure, both to support the output of many fast charging protocols, but also rely on third-party fast charging charge. The current fast charging protocols compatible with third-party charging treasure, generally Apple 2.4A, PD, QC, AFC, etc.. In fact, a rechargeable battery compatible with Apple 2.4A, PD, QC can achieve fast charging for many cell phones. However, some brands of smartphones will launch corporate private fast charging protocols, which are not necessarily compatible with the above protocols. Such users may wish to purchase the corresponding brand of rechargeable batteries if they have requirements for charging speed. Of course, you have to choose a fast charging cable that is compatible with the power bank.04 People are visual animals
Appearance is also a key point of purchase The appearance is also one of the main points of the purchase of rechargeable batteries. Mainstream rechargeable treasure appearance material is generally plastic or metal. Plastic material portability is good, pick up no cold feeling, the appearance is not senior enough; metal material appearance senior, not scratch-resistant, winter use will have obvious cold feeling, better than plastic material flame retardant. For the appearance of the material, it is a matter of opinion. Personally, I prefer plastic, after all, I do not want the metal shell scratch other devices.