Ryobi P115 Intelliport 18v Volt ONE+ Plus NiCad Power Tool Battery Charger . Fits yellow generation of Ryobi 1 batteries (as shown but not included). Newer/grey Ryobi 1 batteries do not fit this charger.
I also have two yellow batteries available for $15 (for both). One is good 1.5Ah (18Wh) but other seems to hold little power. Batteries fit all generations of Ryobi 1 tools.
