الفهرس 
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Abstract
The battery is the essential energy storage system. Electric energy is the most candidate for replacing fossil fuel energy. Fossil fuels have produced many climate-related problems and severely impact life on the planet. Scientific research seeks to develop everything related to electric energy to become more competitive to replace fossil fuels. The battery comes at the forefront of the scientific research and on developing it, the use of electrical energy becomes suitable for many applications. This research concerns the lithium-ion battery, which is suitable for the EVs field. The battery faces many problems to become more competitive; one of the most important problem is aging. Reducing battery aging helps reducing costs and it became more reliable and competitive. Many factors affect the battery, such as humidity, mechanical shock, temperature, electrical stress (sudden charge/discharge), depth of discharge, trickle charging (keeping the battery charged constantly), and current profile (load). Examining the factors that affect battery aging is very complex, given that the aging process is a process that takes a relatively long time and is affected by interrelated factors. Therefore, the test device must be able to accelerate the results process while ensuring the validity of the results. These results show ideal ways to deal with the battery and extend its life. This study focused on the effect of c-rate on the battery. C-rate is about accumulated charge transfers in and out of the battery. To identify the c-rate impact on battery, a test rig is created based on standard and compares its results with approved tests. The idea of practical experience is based on automatic cycling until the battery life ends.
This study presented an experimental strategy for monitoring, estimating, and assessing the capacity aging process in a Li-ion battery. The presented test rig facilitated collecting and monitoring the battery voltage, current, and temperature data every second and automatically saving the data in the memory module. This Experimental assessment allowed manageable data processing and accurate results of the battery degradation mechanism. This experimental work proposed aging mechanism for c-rate pattern. This test rig also allows degradation testing based on the depth of discharge, which can be proposed in forthcoming studies.