Hey! Very recently bought a second-hand Honda CB250F Hornet 2000 from a private seller, 56000ks on it, probably should have had it checked out beforehand (yeah I know that now :c). Anyway, it was all fine and good the first day then the next morning (it'd been raining the previous night and I park in the street) the engine turned but wouldn't start and the lights started dimming, horn was quiet until it stopped working. So I ended up jump starting it with my old motorcycle (wrongly turned the other bike on and it blew the fuses on my new one; indicators, brake lights, horn and dash wouldn't work but I replaced them all no trouble) and that worked, so I figured it was just a battery issue. I've had to jumpstart the bike about 3 times in the past few days as well as a few hill starts, first two times jumpstarting it worked perfectly with no issues but attempts after that have had the engine turning well but it wouldn't catch properly. Bike tended to cut out in idle at the lights and whatnot so I've had to keep the revs up when stopping otherwise it's a pain to get going again. Bought a Katana battery which was the same one as the old one but going home the bike stopped and I had to wait it out for a friend to help. We tried jump starting, hill starting but it wouldn't keep going and with the old battery it would cut out after a while. So in desperation we tried using the new battery straight off the bat, filling it then waiting for about half an hour, put it in and whatnot, then hoped it would work with a hill start. It kind of did, engine kicked in but it was unreliable and I had no control of the power so we ended up getting the bike in a trailer. Tried a hill start this morning, it worked for a bit but cut out in idle and wouldn't start up again. Jump starts still not working with the same problem. Decided to change the spark plugs (which definitely needed changing) and hoped that would work but apparently that didn't change a thing. Going to charge the battery when the charger comes but at this point I'm feeling it's not a battery issue, if when we jumpstart it it doesn't work then I figured it has to be something else but I'm not sure what that something else might be. For a beginner rider I'm not really sure what to look for, any help would be appreciated, thank you!