The battery C Rating is the measurement of current in which a battery is charged and discharged at. The capacity of a battery is generally rated and labelled at the 1C Rate (1C current), this means a fully charged battery with a capacity of 10Ah should be able to provide 10 Amps for one hour.
What is the charge and discharge rate of a battery?
Charge and discharge rates of a battery are governed by C-rates. The capacity of a battery is commonly rated at 1C, meaning that a fully charged battery rated at 1Ah should provide 1A for one hour. The same battery discharging at 0.5C should provide 500mA for two hours, and at 2C it delivers 2A for 30 minutes.
The battery C Rating is the measurement of current in which a battery is charged and discharged at. The capacity of a battery is generally rated and labelled at the 1C Rate (1C current), this means a fully charged battery with a capacity of 10Ah should be able to provide 10 Amps for one hour.
C Rate is derived from Coulomb's Law, developed by French physicist Charles Augustin de Coulomb. The c-rate is the governing measurement of what current a battery is charged or discharged at. For example, the posted mAh of the battery is the 1C rating. If a battery is labeled 2000mAh, then its 1C rating is 2000mAh.
The c-rate is the governing measurement of what current a battery is charged or discharged at. For example, the posted mAh of the battery is the 1C rating. If a battery is labeled 2000mAh, then its 1C rating is 2000mAh. To simplify, the battery should provide a 1C current for one hour.
The capacity of a battery depends partly on how fast you discharge it. A specification like "25Ah/10hr" says that the battery has a capacity of 25 amp-hours when it is discharged at a rate that takes it from fully charged to fully discharged in 10 hours — in other words, at 25Ah 10hr = 2.5A 25 A h 10 h r = 2.5 A.
The “C” in battery ratings shows the charging and discharging rate. A 1C rating means a battery can deliver its capacity in Amps for one hour. For example, a 10Ah battery can provide 10 Amps at 1C for one hour. Knowing this helps improve charging and discharging efficiency in solar battery systems.