I got stranded over the weekend 50 miles from home with a dead battery. Died like instantly...one minute it worked, half hour later no start. Making a long story short, I was able to get a battery from a car parts store that fit physically, but is 210 CCA and 14 AH instead of the 270 CCA and 18 AH of the original. It was either that or find an expensive tow home on a Sunday afternoon....battery cost $83.00 and is, of course, not a returnable item. My question is, can I run it with this battery for a short while (until the end of the month), as the bike starts and runs fine, or do I need to bite the bullet and get the right one ASAP?