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Scooters - 125 to 300 => Agility 125 => Topic started by: Jim Moore on March 12, 2015, 11:30:18 AM

Title: Alternator Output
Post by: Jim Moore on March 12, 2015, 11:30:18 AM

The battery in my A125 died yesterday. As I was messing with it I checked the alternator output. The battery reads 12.65 engine off. With the engine running and some rpm it reads over 14, like 14.25 or so. That seems a little high, but I'm not an electrical expert. What do you guys think?

Title: Re: Alternator Output
Post by: MrXT on March 12, 2015, 09:09:45 PM

That seems perfectly fine. If you measured the output voltage of a 12v car battery charger you would see its about the same.

Title: Re: Alternator Output
Post by: Jim Moore on March 13, 2015, 12:26:28 PM

Thanks. I guess my battery is just shot.

Title: Re: Alternator Output
Post by: MrXT on March 18, 2015, 04:56:33 AM

Quote from: Jim Moore on March 13, 2015, 12:26:28 PM

Thanks. I guess my battery is just shot.

12.6v isnt bad for a 12v SLA battery or VLA battery. Just bring it inside and charge it up. The so called alternator on scooters and motorbikes doesn't charge up the battery as efficiently as a car does. Just try charging it up at a plug socket and check the voltage afterwards. Im sure it will live again. Its only really dead if its below about 10.5volts.