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Holding charge i have a 1989 750 virago and it seems like the battery is not holding charge I charged it rode it and it was fine for a week then all of a sudden dead. I tried giving it a jump and when I took the - cable it off it would not stay on finally got it running then got home and now its dead again what could it be?
These cycle batteries are very prone to failure, they last maybe two years, bet if u have it tested it fails, don't run it wioth a defective battery u will buren up the alternator a very expensive repair.
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That happened to me last year on my virago 1100. Battery would fully charge, but not hold once in the bike. It was a brand new battery from GP Bikes. I took it back to the store and they checked the charge with their machine, which is better than mine. The battery was a lemon. They replaced it and the new one worked perfectly. But what a pain for a few weeks to figure out it was the battery and not the bike.
the alternator charges the battery thru the heavy lead on the back of the alternator that goes to the battery. make sure it is clean and tight. the alternator output should be 13-15 volts with engine running.
Well, if the Batt don't hold charge then check the regulator on the bike with an Ohmmeter you can buy one at an Auto parts shop....motor running you should see 14.5 V if not then the Reg is out!!!
i could not find a schematic of a 96 cbr400rr, so guessing this bike is not from the USA. however, there should be a master fuse near the battery on the positive side mounted to the battery box somewhere. i would check this fuse first to see if its burned out.
also, is battery fully charged? might have to top charge the battery to get good juice if its old (>3 years) and been sitting for a bit.
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