Would the questioner like to ask: “Can 7.4v4 200mah be charged with 5V2A? ? Can.
1. The standard lithium battery voltage is 7.4V, which means that two sets of 3.7V lithium batteries are connected in series. The total voltage of this battery is usually 8.4V, so the charging voltage should be used. be greater than 8.4 V. Fully charge the battery.
2. The standard input of a general USB charger is 5V 2A. The charger will integrate a boost circuit to increase 5V 2A to 8.4V, so that two strings of lithium batteries can be charged normally.
3. And if the 7.4v4200mah is charged with 5V2A, it will take at least six hours to be fully charged.
Huanuo lithium battery cells made from different materials have different voltages, ranging from 3.2V to 4.5V. Lithium batteries are a unified name, but comme battery positive electrode material not only contains lithium elements, but also other materials to form different batteries, the characteristics are also different. When purchasing batteries, you can purchase batteries with the corresponding voltage according to your needs. Huanuo 60V 40A lithium battery