My ZR160 battery died completely after a 30 minute run with lights etc on. Sat for ten minutes with nothing running or switched on but when I went to restart it...nothing, not even a click from the starter. wife and her friend ended up pushing it for a bump start, they were well impressed
, new battery the next day and the battery is still fine two years later. Mind you, the battery was from new in 2003 and this took place two years ago so no complaint from me, can't say the same for er indoors though