It is not good to charge the cell phone battery with a universal charger. Reasons:
1. Charging the cell phone with a universal charger will result in decreased battery performance and battery life. of the cell phone to deteriorate.
2. The charging current and voltage of the universal charger generally do not match the rated input current and voltage of the mobile phone, and long-term use will damage the battery.
3. Generally, a power bank is used for mobile phones, then when the phone is powered off, the power bank is used to charge the phone directly.
How much does a 20000 mAh power bank usually cost?
Take it apart, remove the battery, and measure it with a multimeter to see if the battery is broken. the battery is not broken, buy a 1 liter one. Pressure plate kit, II made an external battery myself. I just took apart a Lenovo ultra-thin battery and three polymer batteries. One of them had very low voltage. I used a universal battery. charger to charge it for a day, then I bought a booster board kit, got a power bank.
The original poster, according to the average market price of the power bank, is estimated to be between 120 yuan and 150 yuan. I advise you not to use power bank, universal charger and other series of products. It's not that they're bad. The reason is that the power bank will have a negative impact on the configuration of the lithium battery of the cell phone, which may eventually cause the cell phone to leak electricity and the power board to consume power quickly. .Therefore, it is recommended that the poster use QI mobile phone charger. Ihas been working in the mobile phone marketing industry for many years and accumulated a lot of experience, I hope the poster will adopt it, thank you.