Hyosung Battery Maintenance

Hyosung Motorcycle Battery Maintenance – If you’re having problems with your bike’s battery or you just would like know more about it, please read the information below.

Storing Your Battery

If you’re not using your bike regularly, I would suggest that you remove the battery cables to eliminate drain from electrical components and you should also consider charge the battery every two weeks or so.

For longer battery life, remove the battery from your bike and charge it to 100% or full. It is adviseable to charge your battery every month if you’re storing your  bike at at temperatures below 60°. . If stored in a warm area (above 60° F), charge every two weeks.

Important: Before performing any inspection on your battery, make sure that there are no open flames or possibility of sparks around the battery and absolutely no smoking. Always wear eye protection, protective gloves and clothing.

Cleaning of battery terminal

Clean the battery terminal when it is dusty or rusted.

1. Set the ignition switch“ OFF”position.
2. Disassemble the front seat, disassemble the ( +) positive battery wire after the ( -) negative battery wire. Remove the battery.
3. Clean the terminal. If there is white dust, clean it with warm water.
4. Assemble the battery wires and grease the terminal lightly.

When your battery is clean, it’s time to check the state of charge. When using a voltmeter, the battery terminal voltage should read at least 12.0 volts. If your voltage is below this or you’ve adjusted the electrolyte levels, a boost charge is required.

Proposed test / measure the battery voltage:

• Before starting;
• When engine has started and is at idle;
• When engine RPM is at 5000;
• With headlight(s) on at idle;
• With headlight(s) on at engine RPM 5000;

Below are some summaries of the battery date:

NOTE: These datas are just estimated and based on few research. It may not be entirely accurate but it will give you some rough idea on how the battery measurement should read.

* Data below credited to Hyosung / Naza Blade community of Malaysia.

Ignition ON (Engine is not started with Headlight is turned off)

13.1V above – Higher Cold cranking amperes (CCA) battery

12.5-13.0V – New battery

12.0-12.4V – Normal (50% or half battery life)

11.5-11.9 – Battery discharging, It should rechargeable and you should charge it.

10.4V below – Poor battery, try to recharge and if it doesn’t help, you will need to replace with a new battery.

Engine started with headlight switched ON and on idle mode (Usually 1500 – 1800RPM)

13.0-14.5V & above – Excellent condition

12.0-12.9V – Normal

11.9-11.5V – Minor electrical circuit issues such as, incorrect wattage of light bulbs, alternator (Magnetic coil, fuel coil) or charging circuit fault.

Engine started with headlight switched ON, rev the engine till 5000RPM

15.5V & above – Rectifier/regulator fault

13.0-15.0 – Normal

12.5-12.9 – Minor electrical circuit issues such as, incorrect wattage of light bulbs, alternator (Magnetic coil, fuel coil) or charging circuit fault.

12.0V below – Alternator (Magnetic coil, fuel coil) or charging circuit fault.

Below are the battery reading which was increasing as soon as they Rev the engine at about 5K RPM which indicates both Battery and the Rectifier is in good hand.

As for the Rectifier componenet, there are 3 yellow wires from the magnet coil and other 2 for the battery. To check on this component, use a Mutlimeter and while the bike is on idle (engine started).

Check the 2 wires and if it reads above 13V and above, it is in good condition
Check the 3 yellow wires, if it reads 16V and above, it is in good condition.

If the reading are different, most likely the issue could be due to faulty Magnet coil.

If you have any questions, drop them at the comment box below and feel free to share this article via the social buttons.

15 Responses

  1. Khor Eng Khian says:

    What the minimum battery leakage on this bike?1-2mA is normal?

    • Rider Chris says:

      Hi Khor, I am not sure the minimum leakeage for Hyosung but in General, 1-2mA is normal. You can also check your battery voltage as the instructions here https://goo.gl/tGr2DT and use my site information as guidelines.

      • Khor Eng Khian says:

        my hyosung is indicate 02.110mA current leakage when in key off position,after i check the leakage problem is come from the digital meter wth taco meter!! when i disconnect the socket of DM,the current leakage is drop to 0.0003mA,for my acknowledge most bike current leakage is not more then 0.1mA,so is that my bike will drain of the battery when overnight?

  2. Rider Chris says:

    Hi Hazim, both Naza blade Naked 250 and GT250R are the same bike including the Coil. The only difference is one is fairings and one is without. However, only year 2010 and above models are with EFI. 2009 and below are carburetor type.

  3. Hazim Habush says:

    hello Rider Chris i want to ask is there any difference between coil magnetic for naza blade 250 efi and gt 250 or can work on both ?

    • Rider Chris says:

      Hi Hazim, both Naza blade Naked 250 and GT250R are the same bike including the Coil. The only difference is one is fairings and one is without. However, only year 2010 and above models are with EFI. 2009 and below are carburetor type.

  4. Rohan Krishna says:

    I just charged my battery coz it was unable to start( I’ve parked it for a while without using it). But after the battery is fixed and I started riding, the bike makes battery on sound ( the sound which comes when you turned on the ignition ). Is this normal?

    • Rider Chris says:

      Hi Rohan,

      Can you please try to unplug-plug it back in your battery with your bike ignition switched off and see if that helps? Also, ensure your bike battery is a proper one, i.e. recommended by Hyosung or your local distributor. Cheers

  5. André says:

    There are a error.

    5000 rpm to 10500rpm the max voltage is 15.0v, 15.4v is dangerous and can damage electrical components

  6. Netpix says:

    Great post!

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