Guoming Weng

Lead Acid-NiMH Hybrid Battery System Using Gel Electrolyte

Due to its mature technological status, lead acid batteries have not been the focal point of batteries in the last decade. With the limitation on other new battery types – such as low power density for lithium ion battery, high self discharge and short life cycles for high current discharge for nickel metal hydride (Ni-MH) battery – researchers has revisited the possibilities to enhance lead acid battery technology. Lead acid batteries are durable with low maintenance, inexpensive and simple to manufacture; recyclable and lowest self discharge among other rechargeable systems. With the above advantages, lead acid batteries are both cost effective and energy efficient; it is expected that lead acid battery would attract interests from battery manufacturers should the lower energy density and cycle life be improved.