Has anyone tried replacing their Dyson V7 Battery (https://usabatteries.com/product/dyson-v7-battery-replacement-high-capacity-for-all-v7-sv11-vacuums/) recently? My vacuum doesn't hold charge anymore, and I'm unsure if buying a new battery from USA Batteries is a good idea. Does it restore full power and runtime like before, or should I consider upgrading to a newer Dyson model?