I purchased a battery from another supplier which didn't work with my Ducati 848 and had to return it. The motorcycle kept switching off all the electronics at every 5 seconds. Almost decided to go for the classic 4 kg Pb battery, then found the Skyrich battery and tried it. It worked fine, the bike had absolutely no issue with it. And I'm happy to have dropped off 3 kg (6 lbs) from the bike !
Also, the battery powers on the engine better than the classic battery. Of course, when the battery is cold, you need to warm it up by keeping the lights on for half of minute.