I have a Ribble ALe Hybrid. I purchased the bike last year and got the actual bike on 21 October. 22. It had been working brilliantly up until mid June 2023, then I noticed it would cut off power half way up a lengthy hill. It was like it was fighting against me. It seemed worse in heat waves, such as June and then part of August. On the flat it has no problem, doesn't cut out. I tried going down to a lower gear but that doesn't make a difference. It isn't the battery, that's reading fine and I found myself checking the temp on the Mahle App. to make sure the bike temp wasn't exceeding 40 C. Max it ever got to was 32C whilst in shed. Could it be an overheating control problem and is making sure when I go up a hill and it needs more voltage it cuts off to save the electronics. At the moment it is back at Ribble in Lancashire and it is waiting in a queue to be fixed. I explained the situation about problem.