QUOTE(Valentino46 @ May 14 2019, 02:14 AM)
12.5v need standby change battery....got onot bro,most sources i studied suggest open circuit 12.5v still at 80%+- capacity,normally if connected to car there'll be some parasitic load even when you turn off the switch but if still can get 12.5v very ok lor,fully charge voltage is typically 12.6 to 12.7v after 30 minute rest without residual voltage
the recommended way of using multimeter to check battery health is read the voltage fluctuation of the battery during startup and under load,the voltage should not dip under certain voltage,depending on who you ask,some say 10v some say 7.2v
Well I'm not saying you are wrong either. Early I quoted 12.5V and below is because as a safety precaution. But after reading some websites, some claims that anything 12.4V and below have to standby.
No one likes a sudden dead battery surprise.
This is because now my Axia, being just a small car with small engine, every morning I check the volts and its around 12.5.
And the starter sounded slower together with the dashboard light is kinda weak , but thankfully it still starts up.
but once warms up, the every subsequent start up it shows up around 12.8V.
Though it's like a early warning. 2.5years and 60K mileage I'm surprised the battery still holds up. Panasonic OEM battery.
But ill get it change soon.
I've done also load test as you mentioned , meaning I have to disable the Ecu and/or ignition coil at the fuse box.
Done that, so far it's showing around 10V but that's with a warmed up engine. Didn't try with a cold engine.This post has been edited by SleeplessEyes: May 14 2019, 04:06 PM