QUOTE(SleeplessEyes @ Apr 30 2021, 09:44 AM)
Hi Roman Catholic,
Update: Yesterday evening, I took out the battery from the Axia (cause I stay in an apartment) and I charged it back home. Click below for my observation:
Conclusion
Earlier you quoted : The only thing a charger cannot do is bring up the CCA reading, if only there was 1.
I read that starting voltage / load test voltage has relations with how much the battery is able to start the car - Cranking amps. Thats why some mechanics which has the old fashion battery tester (which looks like a cheese grater) - that one really test the battery starting load.
Photo: https://my-test-11.slatic.net/p/30a827d486e..._720x720q80.jpg
So yes, you are right there, I shouldnt worry about the initial 12.6V . Rather should be more concern about starting voltage.
I believe that the charger doesnt just put volts in there. It puts back amps into the battery, the actual working battery capacity.
Fantastic you got yourself an OBD2 stuff. Been thinking about getting one myself but there are so many things inside I wont understand because I am not a mechanic. Been putting off buying that for the moment. Update: Yesterday evening, I took out the battery from the Axia (cause I stay in an apartment) and I charged it back home. Click below for my observation:
» Click to show Spoiler - click again to hide... «
Conclusion
Earlier you quoted : The only thing a charger cannot do is bring up the CCA reading, if only there was 1.
I read that starting voltage / load test voltage has relations with how much the battery is able to start the car - Cranking amps. Thats why some mechanics which has the old fashion battery tester (which looks like a cheese grater) - that one really test the battery starting load.
Photo: https://my-test-11.slatic.net/p/30a827d486e..._720x720q80.jpg
So yes, you are right there, I shouldnt worry about the initial 12.6V . Rather should be more concern about starting voltage.
I believe that the charger doesnt just put volts in there. It puts back amps into the battery, the actual working battery capacity.
Wah not bad leh Exora now also has Smart Alternator installed. When you wrote about braking and voltage increasing yeah, I read something about it too regenerative braking but couldnt understand. Anyway I think it must be linked or related to the Smart Alternator system.
With you with keeping the battery in a fully charged up condition everytime and the battery is just 10 months old, I think the battery can surely last one. Nothing to worry. A battery I installed even it was drained 4 times in the 1st month it was installed is still functioning extremely well, what more is your battery never drained before and kept fully charged condition.
Yes, actually my job is to detect cases before Starting voltage / load test situation begins, once it has started it has the possibility of increasing the rate of wear & tear to the Stater Motor or worst still damaging it. So being able to advice customers accurately about their battery state of health and charge is crucial.
Putting back Amps. What I have notice is that chargers are able to put back minimal amount of amps only. I havent done any calculations on % yet but this is what I have observed only. As the battery is constantly being used, it slowly degrades with shedding, temperature etc. I suspect that it is the shedding of active paste from the lead grids is the major culprit. So over time the battery loses its capacity.
Anyway from the earlier battery test comparison provided, the 2nd example registered a 12.83V when tested (looks like it was fully charged) but when Starter Test was performed it failed completely. So trying to interpret the health of the battery from voltage reading alone is hardly accurate. Luckily your battery was dated, I've noticed batteries recently traded-in are without installed dates indicated. Hmmmm I wonder why ... 😞
This post has been edited by Roman Catholic: Apr 30 2021, 10:59 AM