Do you needto charge a new phone to 100 percent

In general, it's not necessary to charge a new phone to 100% for the first charge. In fact, it's recommended to charge it to a moderate level, such as 80-90%, to help the battery calibrate properly.

Here's why:

  1. Calibration: When you first charge a new phone, the battery management system (BMS) needs to learn how to accurately estimate the battery's capacity. Charging it to 100% can cause the BMS to overestimate the battery's capacity, leading to inaccurate battery life estimates and potentially causing the phone to shut down unexpectedly.
  2. Prevents overcharging: Charging a new phone to 100% can cause the battery to overheat, which can reduce its lifespan. By charging it to a moderate level, you can help prevent overcharging and reduce the risk of battery degradation.
  3. Helps maintain battery health: Charging a new phone to 100% can cause the battery to expand and contract excessively, which can lead to physical stress and potentially reduce its lifespan. By charging it to a moderate level, you can help reduce this stress and maintain the battery's health.

So, what's the best way to charge a new phone?

  1. Charge it to 80-90% for the first few charges to help the BMS calibrate.
  2. After the initial calibration, you can charge it to 100% if you need to.
  3. Try to keep the battery level between 20% and 80% as much as possible to help maintain its health.

Remember, it's always a good idea to follow the manufacturer's guidelines for charging and maintaining your phone's battery.