Gone a bit off topic (there's lots of Burke's on bikes on YouTube) Bikes &TT is a newbie like me, and was asking which bike to choose to go up hills. Quick tale of how we got here........ Raced power boats from age 15 up to International level, should have been 16 but my dad lied about my age (if you watch Bristol dock race on YouTube it will give you the flavour). Rode in MX Enduros till I was 72 yrs which ended in 2 compacted vertebrae, dodgy ankle and knackered wrist...... So not the most mechanically fit ! Gave that up as Asthma kicked in ! After what seemed like 2 years of house arrest with Covid lockdown and actually getting the Virus, my wife and I decided we better break out so we built 2 bikes for not a lot of money...... 2 bikes off eBay 30 & 50 quid and 2 X 250 W Tongsheng mid drives , according to the spec there is not any difference in torque between the 250w and the 500w, all the same motor apparently. Woosh says we wouldn't find any difference and he's dead right as son in law has a 500w and have tried both. We chose the mid drive because whether you have 80 newton metres of torque or not, if you can change to a lower gear you can still climb the hill. We ride our bikes in Derbyshire, not known for being flat, and not had a problem climbing any hills. On the subject of brakes, we have old V brakes and never had any problems stopping, you just ride within limits. On the subject of brakes, nobody mentions tyres! Our Ducati 1198 race bike has big brakes and sticky slick tyres, even an old duffer like me can get the back wheel off the ground with 2 fingers on the lever. But if you try the same trick and the tarmacs a bit damp, you'll be on your bum before you know it. Most Ebikes I've seen have thin bicycle tyres on with knobbly treads which won't give much grip on tarmac at the speeds people talk about....big brakes or not.......It's down to the friction between tyre and road regardless of how powerful your brakes are! My wife is a big fan of Seneagle and she looks forward to his physics lessons every morning, no I'm not being rude of facetious, we really do enjoy it. Thanks everyone who gave me info on my battery problem, it's really appreciated.