The aunstarwei 42V 5A Battery Charger is an essential tool for anyone dealing with a 36V Lithium-ion Battery Pack. This charger has a DC 5.5 x 2.5mm/5.5 x 2.1mm plug for a secure and efficient connection, making it compatible with various battery packs. With a maximum output of 42V and a current capacity of 5A, it ensures quick and efficient charging times. Its advanced design and robust build make it durable for long-term use. Whether you're a hobbyist, professional, or anyone working with high-voltage batteries, this charger is a reliable and cost-effective choice.