The charging speed of a battery changes significantly as it nears full capacity. Here’s how:
- Initial Rapid Charging: When a battery is partially discharged, it charges quickly. This is because ions can move more freely within the battery, allowing for rapid absorption of charge.
- Tapering Off: As the battery approaches full capacity, its charging speed decreases. This is a built-in mechanism to prevent overcharging, which can potentially damage the battery.
- Intelligent Charging Control: Modern charging systems often include intelligent controls that adjust the charging power. They typically deliver maximum power between 5% and 70% state of charge (SOC). Beyond this range, especially as the battery nears full capacity, the charging power is reduced to avoid overcharging.
- Charging Profiles: Batteries are designed to charge efficiently at higher rates when they are below 80% SOC. Once they reach this level, the charging process slows down to ensure safe charging and longevity of the battery.
Overall, the charging speed is optimized for safety and efficiency, especially during the final stages of charging.
Original article by NenPower, If reposted, please credit the source: https://nenpower.com/blog/how-does-the-charging-speed-change-as-the-battery-nears-full-capacity/
