QUOTE(fireballs @ May 5 2022, 12:52 AM)
The main draw will still be engine starting. Efb battery allows heavy repeated drawing of current before have a chance to get charged. Esp during start stop traffic.
The sensors takes miliamps and should not affect much. Ecus have heavy filtering so voltage fluctuation would not affect it.
Infotainment damage is possibly from terbalik terminal. Likely shorted the polarity protection diode.
In any case, disabling the startstop should prolong the lifespan of the battery, efb or normal.
Ultimately is customer decision
Ev is another story. High voltage side is typically 600 to 800v. There is a DC DC converter that gives 12v for charging a conventional lead acid battery to power up the infotainment, fans, aircond compressor etc.
If silap pasang I dont think only the infotainment will be the only problem, there will be bigger and more expensive problems.
OK here is what happened. 1st time I tested this Myvi Gen3, I immediately told to owner not to use the vehicle anymore, until I had done the battery replacement. It was a Bad Cell status. Since they have another car, use that first.
The following day, the owner drove to Jusco, no issues. On their way home, a strange 2" bar appeared across the screen. The owner immediately came to see me and showed me the bar. I also damn stupid, never whipped out the phone to record the damn bar. Panic sial, owner also sad already, saying really sakit hati stuff, like dunno this brand can trust onot. Told the owner no worries, go back first and will drop by an hour later.
Dropped by and we went on a test drive. This time armed with the stupid phone to record the strange bar for my HQ and my contacts at Perodua SC. KNN this time the bar never appeared again, until today. I had done a couple of battery replacements for this Myvi G3 but nothing quite like this ever happened before.
Since that incident, now I am very fussy about calls asking for battery assistance. If owners dont listen to their SC and wants my assistance in time of their need, I will usually give some stupid excuse. Surely got some other hidden problems brewing already.
Clients who allows me to do diagnostic test before their battery dies, then I know what exactly I am dealing with and I will be to help. Out of the blue new clients, I just send them back into the blue aje lah. Orang lain pun mahu untung ma.
Definately sounds snobbish but hey at least I dont have to incur any stupid repair bills later and most importantly loss of goodwill towards my Principal Co. batteries and me.
This post has been edited by Roman Catholic: May 5 2022, 07:36 AM