The M12 B6 Replacement Battery Pack is a high-quality lithium-ion battery with a capacity of 6 Ah, providing long-lasting power for your Milwaukee tools.Please note that this item is not tested because i don't have a charger. With a single unit included in the package, this battery pack is a reliable and efficient choice for both professional and DIY projects, ensuring you have the power you need to get the job done. Please view all photos. Zoom in on photos for a close-up view. Thank you for your support! I work hard to provide the best customer service possible. If there are any issues with a purchase, PLEASE CONTACT ME directly through messaging. I will always do my absolute best to resolve any issue and be honest and fair in any situation. IF YOU BUY MULTIPLE ITEMS FROM ME - PLEASE utilize the cart feature pay for everything at one time! This saves you time helps me save on fees and keep my pricing low! FAST SHIPPING!!! THANK YOU SO MUCH FOR CHECKING OUT MY STORE, PLEASE COME BACK!?