Good standard.
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Fast charging of a 30,000 milliamp charger will reduce the battery life of your phone. It's better to have a standard charger.
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The actual amount of power rushed into the mobile device and the nominal there is a certain difference (less than the nominal), that is, the conversion rate is usually said, it is recommended to choose the mainstream brand when buying, if you can see the conversion rate figure is better, the greater the conversion rate, the better. At present, the conversion rate of charging treasure is generally between 85% and 90%, which can be measured by price, capacity and conversion rate factors.