ONE COMPATIBLE! This tool runs on the power sources used in Ryobi's ONE battery system, making this purchase extra smart for the Ryobi veteranPORTABLE PISTOL PUMPING POWER:
https://www.crazyibuy.com/powe-hand-tools/air-tools-compressors/ryobi-p737-18-volt-one-portable-cordless-power-inflator-for-tires-battery-not-included-power-tool-only/