We import A-class prismatic cells from the top lithium battery factory in China- Ganfeng Lithium Industry. BMS(Battery Management System) are imported from Daly, a reputable BMS manufacturer. In addition, Big Wei Battery has our own laser welding machine and CNC engraving machine in Brisbane. All the components and accessories are made of the best materials, not to mention we have a highly skilled team with superb electrical skills, and thus Big Wei is able to produce a series of high-quality lithium batteries – BWB LiFePO4, locally in Australia. BWB LiFePO4 products has excellent performance and is deeply loved by customers! Since we are located here, apart from warranty, we can also provide you with lifetime service, and give you a hassle-free shopping experience. BIG WEI is definitely your no-regret choice!