Description This 36V 10Ah (360 Wh) Lithium-Ion battery pack, designed for Lark, has reliable quality and superior performance. The battery pack uses quality lithium-ion cells, which have high energy density and high discharge efficiency. And it has a super long service life, whose cycle life can reach more than 600 times. For portability and anti-theft reasons, we’ve made a detachable design that you can take home to charge. The battery securely mounts to the base without connecting any wires. A spare battery can double the distance you travel. You can completely immerse yourself in the journey without being bothered by low power. Compatibility Lark. Features Rated voltage: 36V Battery capacity: 10Ah Weight: 8lb Built-in charge level indicator Lockable and removable with two includes keys Note The battery also has an 18-month warranty. You can view our return policy for details. For assistance in choosing the right battery for your Ecotric e-bike, please contact us via email(service@ecotric.com).