i had my op-1 down to one light on the meter, charged it all day yesterday and when i just checked, it’s in the same spot on the battery meter…?
Common issue that’s well-reported on this forum. Your OP-1 is fine, just the meter is miscalibrated. You can try leaving it on charge for a long time to see if it fixes it, or factory reset it. Some USB ports or chargers seem better than others and I’ve never had it happen when charging with a Mac.
You can also drain the battery and recharge to see if it helps. Run the FM radio and a Tombola sequence until it powers off