A N G D I

How to Choose a Charger?

2026/02/08 09:28:03
  1. Constant voltage charging uses different charging voltages for different voltage levels. Therefore, you cannot select a charger based solely on current. For example, a battery charger designed for 5V batteries cannot be used to charge batteries of other voltage levels, such as 12V or 6V.
  2. Trickle charging also varies by battery type and is often referred to as float current. Its magnitude is closely related to battery capacity. For instance, the normal charging current (constant current charging current) of a 10,000mAh battery may be smaller than the float current of a higher-capacity battery. Excessively high constant current charging can easily cause battery overcharging, which shortens battery life or even damages the battery. The two basic rules for battery protection are: avoid overcharging and avoid over-discharging. Violating these rules, even if the battery is not immediately damaged, will likely lead to reduced capacity.
  3. Constant current charging is the phase where the charging current remains constant while the charging voltage rises approximately linearly. Charging directly at a current of 0.1-0.2C, even without other accidents, will shorten battery life due to excessive heat generation. This is why constant current charging starts with a fixed current and a linearly rising voltage—its purpose is to extend and protect battery lifespan.