1, the charger directly charged mobile phone, the most critical is the safety voltage (generally 5V to 4.2V) can not exceed;
2, the charging current is determined according to the battery capacity (100MA-500MA current available for capacity below 1000mAh; 1000MAh to 2000MAh capacity can be used 600MA to 1000MA current; Batteries with a capacity of more than 2000MAH need to be charged with a current of more than 1000MA);
3, as long as the voltage meets the safe value, no matter the size of the current can be safely charged, but the larger the current, the faster the charging time, the current is too large, the battery heat is also large, but the mobile phone circuit protection function is normal is safe. In order to be more stable, it is recommended to choose less current as far as possible (under the premise of not urgent use), and it is safer to heat less.
The internal circuit output part of the charging treasure uses the constant current source output power supply mode, that is, when you choose the 1A interface, the maximum charging current is 1A, if you choose the 2A interface, the maximum output current is 2A.
You look at the logo on your mobile phone charger, if the output current is less than 1.5A, choose 1A interface charging. So you don't burn the phone.
The best idea is that the output current of the charging treasure can be adjusted, so that when in use, the constant current output of the charging treasure can be adjusted to the output current of the original mobile phone charger.