I wanted to load test my NT and GS battery for CCA / battery health, but I found no way to do it.
Charged it, took it to Auto Zone (they flatly refused to test it, even though they sell power-sport batteries), Pep Boys were hesitant but did try (their tester could not test motorcycle battery). I did not want to spend more money on a battery tester … so what to do …
Well googling lead me to the knowledge that when cold engine cranking the voltage should not fall below 10V , and if it goes below 9.6 V, then the battery is toast… so now what to do ?
So I hooked a multi-meter and had a flash of inspiration … my cell phone has slow motion video capture (1080p at 240fps, normal is 1080p at 30fps), so asked my kid to hold the camera and start recording … and started the NT … the terminal voltage was 12.6V and on cold cranking fell to ~10.4 v … could view the voltage change in slow motion in the video …
This does not give not give the exact CCA, but does give a good idea of the battery health and is little easier as the voltage change is captures on video and can be seen easily …
Thoughts?
PS: My NT battery is ~6+ years old yuasa AGM. And it was sitting for 2 days outside the NT post charging, so I believe the surface charge was gone as the battery voltage was stable at 12.6 V for last 2 days.
Charged it, took it to Auto Zone (they flatly refused to test it, even though they sell power-sport batteries), Pep Boys were hesitant but did try (their tester could not test motorcycle battery). I did not want to spend more money on a battery tester … so what to do …
Well googling lead me to the knowledge that when cold engine cranking the voltage should not fall below 10V , and if it goes below 9.6 V, then the battery is toast… so now what to do ?
So I hooked a multi-meter and had a flash of inspiration … my cell phone has slow motion video capture (1080p at 240fps, normal is 1080p at 30fps), so asked my kid to hold the camera and start recording … and started the NT … the terminal voltage was 12.6V and on cold cranking fell to ~10.4 v … could view the voltage change in slow motion in the video …
This does not give not give the exact CCA, but does give a good idea of the battery health and is little easier as the voltage change is captures on video and can be seen easily …
Thoughts?
PS: My NT battery is ~6+ years old yuasa AGM. And it was sitting for 2 days outside the NT post charging, so I believe the surface charge was gone as the battery voltage was stable at 12.6 V for last 2 days.
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