Motorcycle Battery Voltage At Idle

Both old alpine amp and new amp are rated at 14 4 input voltage.

Motorcycle battery voltage at idle. During a normal ride a motorcycle provides about 13 14 or 15 amps while idling only provides less than 1 amp. If it keeps creeping down the longer it sits order a new battery or look for a parasitic drain in the bike. Technically a motorcycle battery does charge while the motorcycle is idling though it does not provide as much amperage as when the motorcycle is at higher speeds. A healthy 12 volt motorcycle battery should maintain a range from 9 5 10 5 volts under the load for a good 30 seconds straight.

Specs for the reg rec show 14 3 14 8 is normal voltages also there are also 2 ref rec on this bike. At idle battery is showing 14 2 3 and 14 8 9 when throttled. Your motorcycle s charging system check is complete. If so this is good.

Measure the battery voltage. Now push the starter button and watch what the voltage drops to. It should be between 12 4 and 12 8 volts. Lithium batteries spring to mind immediately as a battery that has a different usage and test scenario.

It s not a heat issue since new amp shuts down only when voltage increases. If lower than 12 4 consider getting a load test done. You should see the voltage increase on your meter even further up to around to 14 4volts this will vary from bike to bike. That voltage you measure is the battery s no load reference voltage.

Your charging system is putting out the necessary voltage to the battery during a running condition past idle.