ihave a 91 tw200 with almost 20,000 miles, ive had it for 7 years now. im starting to have a problem with the battery. i cant keep one in it. i have to buy a new one every year. about halfway through the year i have to start putting a tender on it every night. the voltage regulator puts out 12 volts at idle and about 13.8 at light to mid throttle. someone told me i might be getting the volts but not the amps. just wondering if anyone could help me out. thanks.