Optimum charging scheme of Electric Vehicle (EV) battery

Tubular plate lead acid deep cycle batteries are becoming more and more popular in Bangladesh to run electrical vehicles. A China made low cost charger is commonly used to charge these batteries which takes approximately 10 hours to full charge. In this paper, comparative results of charging EV tubular battery using conventional charger as well as Universal Battery Tester (UBT) have been reported. Total 8 different types of charging methods have been tested and different parameters like temperature rise, change of specific gravity of the electrolyte in the battery, variation of voltage and current, stored Ampere-Hour etc. have been observed. Thereby a comparatively quick charging method has been proposed which can ensure less temperature rise and therefore better efficiency and longer battery life.