Battery charging time is the amount of time it takes to fully charge a battery from its current charge level to 100%. This depends on several factors such as the battery’s capacity, the charger’s voltage output, and the battery charge level. The basic formula used in our calculator is: Charging Time = Battery Capacity (Ah) / Charger Current (A)
You can calculate the charging time by entering the battery capacity, charger output current, and battery charge level into the calculator. The result will show the estimated time required to charge your battery fully. What units can I use for battery capacity? Check the battery specifications mentioned on the battery cover.
The time required to charge a battery pack based on its capacity (Wh, kWh, Ah, or mAh) and the charging current (A or mA). Charging Current The current supplied by the charger to charge the battery pack. Current State of Charge (SoC) The current charge level of the battery pack as a percentage.
Because the charge C-rate is relatively high, we'll again assume a charging efficiency of 90% and then plug everything into Formula 3. Your phone battery will take about 1.6 hours to charge from 5% to full. None of these battery charge time formulas captures the real-life complexity of battery charging.
Battery Charging Time: Suppose we took 13 Amp for charging purpose, then, Charging time for 120Ah battery = 120 ÷ 13 = 9.23 Hrs. But this was an ideal case… Practically, it has been noted that 40% of losses occurs in case of battery charging. Then 120 x (40 ÷ 100) = 48 …… (120Ah x 40% of losses) Therefore, 120 + 48 = 168 Ah ( 120 Ah + Losses)
Based on your battery being a lithium battery and the charge rate being relatively slow, you assume a charge efficiency of 95%. With that, you can plug your values into Formula 2. In this example, your estimated charge time is 8.42 hours. Using Formula 1, we estimated this same setup to have a charge time of 8 hours.