I may have a problem, I have now had my battery replaced under warranty as the first one died, The new one lasts approx one and a half weeks before it does not have enough charge to start the bike. the dealer says all modern batteries are crap and this is normal. My bike is a 2013 model with a factory immobilser as standard. I do have an oxford optimser 900 but still think a bike battery should last longer than this uncharged. I am worried as if next year if i ride to spain and have a weeks beach holiday the bike may not start for the return trip. the voltage had dropped to 10.7 volts after one and a half weeks. Your thoughts please.

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XTz 660 tenere, adventure spec bash plate, main stand, skid marks tall screen, Oxford tail pack 36 litre. Kobra hand guards, Bigger cast footpegs, Zen overland luggage plate, USB power point, iridium spark plug, TKC80 f k60 R tyres, o2 and fuel Kev mods, DNA stage 2 filter. bark buster bar wieghts, Touratec side stand base and GPS mount. Led spot lights