Lead-acid batteries are widely used in automobiles, uninterrupted power supply systems, telecommunications, and other backup applications due to their reliable electrochemical performance. These batteries operate through chemical reactions involving lead dioxide at the cathode, lead at the anode, and sulfuric acid as the electrolyte. However, used lead-acid batteries represent a significant environmental concern due to their high lead content, averaging 10.5 kg per unit. Lead is recognized as one of the most hazardous metals, posing serious risks to human health and the environment. Improper disposal and recycling of these batteries contribute substantially to soil contamination and heavy metal pollution, with global emissions estimated at 3.6 million tonnes in 2010, 65% of which originated from waste management and recycling activities. This study investigates the environmental impact of used lead-acid batteries on soil heavy metal levels in Mgbuka Obosi, Idemili North LGA, Anambra State, Nigeria. Soil samples were collected from areas surrounding disposal sites and analyzed for lead and other associated metals. The findings highlight elevated concentrations of heavy metals, emphasizing the urgent need for effective waste management, recycling regulations, and remediation strategies to mitigate environmental and public health risks associated with used lead-acid batteries.