How’s this for a warranty requirement? Left the nine month old battery off the tender for two days twice now and again, rrr,rrr,click click click and zip. The battery is obviously bad but they still want me to do this or, send it back and they’ll (they say) will do it and respond accordingly. As always I take whatever bike I’m taking on tour off the tender for a few days before I leave just in case. Imagine the look on my face after a day or two in a motel parking lot in another state and rrr,rrr, click click….I’m leaving with a new Yuasa bought from a different company instead of the company requiring this…
Step #1: DISCONNECT the battery from the system, remove cables and connectors, and clean off the terminals. Take a voltage reading for reference and make sure to write it down.
Step #2: Try to charge the battery with the 12 volt charger. Hook it up to the charger and let it charge for a full cycle.
Note: If you are using a smart or automatic charger and your Step # 1 voltage reading is below about 6.5 volts, then you will need to hook up the battery in parallel with another battery in order to charge it. You can do this with any other 12 volt battery, including a car battery, using jumper cables, but DO NOT start the engine of the car if you are using one. You don't need the charger complete its full cycle hooked up to the battery in testing, just give it enough time to add some voltage, usually 10-20 minutes. Then disconnect the second battery, and let the charger charge the battery in question.
Step #3: After the charger indicates that the battery is fully charged, or if it has charged for more than 8 hours, disconnect the charger from the battery. Let it sit for 30 minutes and then take another voltage reading.
Step #4: Let the battery sit for 12 hours with no load, DO NOT load test at this time. After the 12 hours take another volt reading. You should be recording the results of each of these readings as you go.
Step #5: Hook the battery back up to the bike, or RV, or whatever you took it out of. If you are testing a starting battery, hold the volt meter on the battery while you attempt to start the motor. Record what the voltage drops to. If you are testing a RV battery, turn on as many electrical devices as you can while the voltmeter is on the battery.
After you have gathered all of this data, email us the results. Include in the email:
- Year, Make, Model:
- 1st starting voltage:
- 2nd voltage reading:
- 3rd voltage reading:
- 4th voltage reading:
- Engraved battery production #:
- Description of failure:
For a visual demonstration of this procedure, please watch our
Warranty Test Video Tutorial