Quick Answer: How Many Volts Does A Motorcycle Battery Need To Start?

What should a 12v motorcycle battery read when fully charged?

A fully charged battery should read approximately 12.6VDC.

If it reads at or below 12VDC, recharge the battery.

Allow battery to rest and test again.

A battery that has been fully charged, rested, and tests between 12 and 12.6VDC might start the motorcycle, but it’s not holding a full charge..

How do I know if my motorcycle battery is bad?

Consider, too, that if your headlight comes on and is typically bright, and your horn sounds normal, a dead battery is unlikely. Telltale signs that the problem is the battery include weak or nonfunctioning lights and horn. These hints are usually accompanied by little or no response when the starter button is pushed.

Can a completely dead motorcycle battery be recharged?

If you do have a dead battery, you can recharge it with a battery charger (this is preferred), or by jumpstarting your bike with another bike or a car. … At idle, your bike will not produce enough voltage to recharge a battery, so even running the bike for a long time will not charge it reliably.

Can a bad battery still show 12 volts?

The voltage will drop considerably if it’s defective but it may read 12 volts at no load. YES. A car battery should be around 13.6 vdc if it is fully charged..

Will a motorcycle run with a bad battery?

Registered. Yes a bad battery can make motorcycles not run well, shorted cells in the battery will cause the voltage coming from the alternator to get shunted to ground, eventually as more cells short out this will drop the voltage low enough that it will affect the fuel pump and the ignition coils.

Does a kickstart motorcycle need a battery?

If you have a magneto and kick start you don’t need a battery at all. Road legal bikes (with fuel injection systems and electronic ignitions) have too many power demands for a magneto to work, so they have an alternator and a battery. … The motorcycle is a small 150cc.

How many volts should my motorcycle battery have?

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. If the battery begins to hold and then steadily declines, there is a problem. If the voltage drops to 0 volts, there is a problem. We call this, the open cell.

Why do motorcycle batteries die so fast?

All too often, motorcycle batteries die young, murdered by neglect. Dehydration, improper charging, and a slow discharge during storage all shorten a battery’s life. … To prevent these draws from killing your battery, you could disconnect the battery, but even if there is no load on them, batteries self-discharge.

How many amps does it take to start a motorcycle?

Putting 10 amps into a motorcycle battery for a short period of time is safe, 20 amps might be ok depending on the size of the battery.

Does motorcycle battery charge while idling?

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. During a normal ride, a motorcycle provides about 13, 14, or 15 amps while idling only provides less than 1 amp.

How do you start a motorcycle with a dead battery?

Give Your Bike A BumpstartSTEP 1 Switch the key to the “on” position and make sure the kill switch is set to “run”.STEP 2 Stand on the left side of the bike and hold both handlebar grips.STEP 4 Put the bike in second or third gear.STEP 5 With the bike in gear, push it forward until it doesn’t want to move any more.More items…•

How do I check for a battery drain on my motorcycle?

The way to check is to remove the negative battery cable and place your volt-ohm meter in the current (amps) mode. With the key off, place the meters leads between the negative cable and the battery’s negative terminal. The current draw should be zero, but a small drain on the order of a few milliamps is acceptable.

How often should you start your motorcycle?

All motorcycle owners should start and run their motorcycles for at least 15 minutes once a week during the winter. Letting it run will keep all the engine components and gaskets lubricated, eliminates condensation buildup, ensures the carburetor will not gum up, and recharges the battery.

What is the voltage of a dead 12 volt battery?

Resting fully charged 12-volt batteries are around 12.8-12.9 volts, and flat dead ones are at 12.0 volts, so 12.4 volts on a resting battery means it’s about 50% charged.

Is 11.9 volts enough to start a car?

A: Car battery voltage will change depending on its condition. When the engine is off the battery open circuit voltage is 12.9 volts. … As the battery discharges the voltage will sag down to 10 volts or lower. If the battery stays above 11.8 volts it will generally still start the vehicle.

How long does a motorcycle battery last without starting?

about 2.5 monthsA newer battery should last months without starting or a trickle charger (but I wouldn’t recommend it) while older batteries might not turn the bike back on after you stall. you can get a battery tender Jr. for like $20 and you now have a quick connect for accessories too. Mine goes about 2.5 months before it dies.

Can a battery be bad if it reads 12 volts?

A voltmeter is the most reliable way to determine if a battery is holding its charge. … If the voltmeter shows no reading or a reading below 12.4 volts, the battery is dying. If the voltmeter reads 12.4 volts or higher, the battery is fine and the problem lies elsewhere. Start your car.