inb4 root cause is ccp car owaiii

The first case got ccp geely engineer come inspect, in the end macam replaced the DC-DC converter

But recent software update got mention something about DC-DC converter, so may have been something related to software got some edge case causing the big battery not charging the small battery correctly, not sure but hopefully fixed

Heard two or three cases so far, but haven’t heard any after the recent update. So it’s either software related or just rare lemon faulty DC-DC.

This one isnt a dead 12v issue. SC still checking actually so lets just wait for result.

Thailand got few cases like this where the high voltage cables got chewed by rodents which resulted in similar thing happen. Car goes into emergency mode and shuts down

Aircond power is draw from the main battery right?

IINM Proton emas also has 12volt battery in it, when i pasang dashcam that guy said can pakai parking mode which i'm worry it is drain the battery and spoil faster

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From the OP,  BYD SC stated it was the 12V battery issue,.......

Pada 4 petang mereka memberitahu kereta kami mempunyai masalah bateri 12V dan memerlukan masa beberapa hari untuk membaik pulih dan melakukan pemeriksaan.  ...

Pada 5 May, mereka memberitahu saya bateri 12V perlu diganti kerana 'low voltage'. Agak terkejut juga kerana kereta ini baru berusia 10 BULAN dan sudah mengalami masalah bateri. Kos penukaran bateri pula RM418 dan tiada warranty kerana kereta sudah lebih 20,000KM. Persoalan seterusnya, kenapa tiada sebarang amaran atau warning dan kereta terus brek mengejut, mereka menjawab, memang TIADA AMARAN atau indikasi jika bateri 12V bermasalah!
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I think so.. the emas system is the same lah.

But BYD if the big battery below 20% charge, it wont charge the small 12v battery, dunno if geely program it to be the same

Everything. The main battery only powers the drivetrain to move the car.

All small car accessories no matter byd or tesla relies on the 12v

Use same battery like normal ice car or got special different battery?

Which car will give indicator that 12V is running low?

Use same battery like normal ice car or got special different battery?

Electric E brake should be banned. Cable brake provided the best redundancy.

Same battery as old myvi and axia without start stop

Battery code 38b20l

It's a normal 12V lead acid battery however because of it's special casing design it cannot be used in ICE because it cannot be secured safely. So owners of EV has no choice but to buy batteries from SC only. Knowing how genius owners are, yup I have seen ICE batteries fitted into EV and it's not secured at all, then ask apahal battery cepat Kong ya ?

Lanijiao lar. At the end of silap hari bulan both scenario also can die. Don't try to cover it.i buy car to prevent accident not give me free accident

Same battery as old myvi and axia without start stop

Battery code 38b20l

this is why i hate cars full of electronics inside

if this happens to an ICE car, at most the engine would stall...that's all
the car would glide to a standstill, it won't completely locked up

is it "normal" lead acid? i thought it is those deep cycle lead acid battery like those used in auto gate and as some(older) solar battery.. also EV dun need the high CCA which needed by ICE to start the car..