Battery Test

WARNING: This page does not describe the selected car, but rather 10 other vehicles, including the 2009 Honda S2000, 2008 Honda S2000, 2007 Honda S2000, 2006 Honda S2000, and 2005 Honda S2000. However, it is still accessible from the selected car via links, so may be relevant.

WARNING: A battery can explode if you do not follow the proper procedure, causing serious injury to anyone nearby. Follow all procedures carefully and keep sparks and open flames away from the battery.

Required Test Equipment

IMPORTANT: Before testing the battery and/or charging system, please view the following TSB regarding use of the ED-18™ Battery Tester. See SERVICE MANUAL UPDATE: ALTERNATOR TESTING .

Honda Electrical System Analyzer (ED-18 Battery tester): T/N INBED18LLH

Ordering Information

To order an Electrical System Analyzer, go to the Honda and Equipment catalog on the iN, or call 888-424-6857.

Software Version

Make sure you have the latest software in the ED-18. To check the version on the do this:

Press the POWER button.
Select Reports, then press ENTER.
Select i Version, then press ENTER.

If you do not have the correct version, call the Tools Hotline at 800-346-6327

Using the ED-18 Battery Tester

IMPORTANT: Before testing the battery and/or charging system, please view the following TSB regarding use of the ED-18™ Battery Tester. See SERVICE MANUAL UPDATE: ALTERNATOR TESTING .

NOTE: For set up, customization, and other available features, refer to the ED-18 user's manual.

Connect the leads to the positive and negative terminal on the battery.
Use the arrow keys to select the battery test, and press enter, and follow the prompts
NOTE: Make sure to enter the correct cold cranking ampere rating of the battery. If the number is not entered correctly, the result will not be accurate.
Here are the five possible battery conditions:
- Good Battery: The battery has at least 60 percent of its charge and requires no action.
- Good Recharge: The battery condition appears to be good, but charging and retested is recommended. See your battery charger's instructions to fully charge the battery, then recheck. Do not charge the battery using the vehicle's alternator.
- Charge and Retest: The battery condition is not known because its charge is too low. Recharge the battery, then retest. See your battery charger's instructions to full charge the battery, then recheck. Do not charge the battery using the vehicle's alternator.
- Replace Battery: The battery condition is poor. Replace it.
- Bad Cell: There is a problem with the battery. Replace it.