OP-1 original - how long does the battery last? April 06, 2023 10:53 Updated the battery in OP-1 original will last about 8-10 hours of constant use, on a full charge. in standby mode the battery will last about 16 hours. tips for maintaining battery health Related articles OP-1 original - how do i calibrate the battery indicator? OP–1 original and midi OP-1 accessories guide OP-1 OG - how do i remove usb noise? [video] OP–1 - what is the expected encoder behavior?