Battery issue? I'd love to know which? There are two batteries in Toyota hybrids, a 12v and a High Voltage one that powers the car. 1, The 12v is weak and is just used to boot up the computers to start the car. It can be damaged if allowed to be run low. If listening to the radio it is wise to get into the habit of leaving the car in Ready mode instead of in Acc mode as this way the 12v will be continuously charged. Due to the nature of the hybrid, little or no petrol will be used. There was a software issue with Auris Hybrids that caused it to run down but that has been corrected. Never offer to jump start another car with your hybrid though. You will kill it. 2, The HV battery; There isn't a battery issue with Toyota hybrids, at least not official Toyota hybrids since 2001. The original Prius dated 1997-2001 was not officially imported as it was really just a 'test mule' vehicle to see if the technology was viable. It was, once a few changes were made. These changes were made to the official UK models and they are still going now. Some have had failures, but the cars are now 13 years old. Any car that age will start to have expensive issues. There might be HV battery problems with Honda hybrids, but that's a different forum. Seriously don't worry about the technology. It is actually simpler than a traditional automatic transmission. People worry when really they shouldn't. My explanation, and it isn't meant to be rude is that "just because you don't understand how a hybrid works, doesn't mean it doesn't". It is simple to use, so simple that people can't get their head around it. It's different so they worry. Literally put the car in D for Drive to go forward and press the brake pedal to stop. If you're parking or going to be a while at traffic lights, then put the car in P Park. Hill starts are 10x easier than in a manual. Take foot off brake and put on accelerator and in that fraction of a second the car will not roll back. For really steep hills there is a hill start function, but it really isn't needed. Hybrids are much simpler than a manual or indeed a traditional automatic. They're quiet, very smooth and comfortable. They get great economy without trying, mostly free to tax and give out much cleaner emissions than even the latest diesels, and in heavy or crawling traffic the engine is off. Don't worry about charging the HV battery. If it gets low the car adjusts itself to charge it up. If it gets really low (like in heavy traffic) then the engine switches on continuously for 5 minutes to charge it up and then switches back to normal again. It all happens in the background, no lurches, no knocks or clunks. The engine fires up in less than 1/10 of a second so no lag at roundabouts etc. Any further questions or worries or concerns, just ask.