Home Depot offers the Ryobi 18-volt One+ Compact Lithium-Ion Battery 4-Pack, model no. P181, for $89 with free shipping. That's $5 under our mention from last week and the lowest total price we've seen. They provide fade-free power and are compatible with any green or blue Ryobi 18-volt ONE+ tool.
Home Depot offers the Ryobi One+ 18-volt Lithium-Ion Cordless String Trimmer / Edger, model no. P2060, for $89 with free shipping. That's tied with our May mention, $10 off, and the lowest total price we could find. It features an adjustable 10" to 12" cutting width, rotating shaft, and compatibility with all Ryobi One+ tools and batteries.