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Selection of input and output power considerations for polymer lithium battery chargers

by:dcfpower     2021-03-13

Undoubtedly, if you plan to use lithium polymer batteries to power your electric drones, you need a charger specifically designed to charge lithium polymer batteries. Although some drones are equipped with basic chargers, we will focus on standalone chargers that provide more flexibility and versatility.

Input power

The charger receives power from alternating current (AC), direct current (DC), or you can choose to use any of them. The AC charger has a built-in power source and can be plugged into a wall socket, making it easy to charge the battery wherever there is an available socket. DC power is achieved by plugging the charger into a power source or connecting it to a battery. This makes it easy to prepare for on-site charging or when the power outlet is unavailable.

Output power

Chargers are usually measured in watts. Calculate watts by multiplying voltage and amperes. A fully charged 2,200 mAh 3S LiPo battery has a voltage of 12.6 volts. When charging at 1C, it will consume approximately 28 watts of power (12.6 volts × 2.2 amps u003d 27.72 watts). As you might expect, charging at a higher level C will increase the power required by the charger.

When buying the first charger or possibly replacing the charger, many factors need to be considered, such as input power, output power (watts), The ability to charge single or multiple battery packs at the same time, battery number support, balance and computer connection (for tracking and updating). It is also a good idea to choose a charger with an LCD screen, so that you can easily and accurately change the charging parameters and monitor the charging cycle and the voltage of a single battery, and a battery that matches the power that your electric drone's motor can meet.

Related information: Some common problems of lithium batteries. 5 tips for charging lithium polymer batteries. Can a nickel-metal hydride battery charger charge lithium batteries?

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