battery adaptor for earthquake tool, strict quality control and assurance, high safety factor, be used with confidence 18v battery, portable convenient compact in size for easy carrying and storage. its performance and reliability it must have accessory for professionals and diy enthusiasts alike. battery adapter converter compatible for portaband, the product built in battery lock fixed combination tool battery. easy to install and remove, works really well. separate from battery after use to prevent drain. built in protection: there is short circuit protection, over current protection, undervoltage and low power consumption. professionally, the converter be converted without loss. this adapter not be used for battery charging. dc012 battery adapter, made of high quality abs pc material. adapter not be charged.you must the battery with suitable.