Ryobi P117 One+ 18 Volt Dual Chemistry IntelliPort Lithium Ion and NiCad Battery Charger (Battery Not Included, Charger Only) WALL MOUNTING: Keep this almost anywhere you need with the screw brackets located on the back of the unit. Note: Item is shipped in bulk packaging. DUAL CHEMISTRY: This charger works with both Ryobis lithium ion and NiCad batteries. Compatible models include the P100, P101, P102, P103, P104, P105, P107, and P108 CHARGING GAUGE lets you see the progress of your batterys charge, so you can tell approximately how much time you have before you can get to work at full power TEMPERATURE INDICATOR lets you know if your battery is too hot or cold, letting you act accordingly INTELLIPORT TECHNOLOGY: This charger features a maintenance mode that knows when a battery is fully charged. Once full, this unit keeps those batteries conditioned for peak performance and maximized battery life. This uses less power than other charging units that never stop loading power into a battery, wasting energy and your money