Buying a used second hand Oem battery

b16civic · 04-12-2023, 11:30 PM

Thinking of buying a 2019 Bmw m4cs battery used
It’s dated on 2019

How can I check to see if the battery still good or how I can ask him to
show me to see if the battery is good?

What do I look for?

Thank you f80 family

ron_s55 · 05-01-2023, 02:44 PM

At minimum it should show a voltage at the posts, ~13.2v.

That's the avoi the case where the internal BMS disconnected the battery to protect it from undervoltage, so it would show 0 volts.

Besides that, I don't really know, since it's not a traditional lead acid battery.

04-12-2023, 11:30 PM	#1
b16civic Private First Class 9 Rep 171 Posts Drives: 2015 M3 Yas Marina Blue Join Date: Jul 2017 Location: Winnipeg iTrader: (0)	Buying a used second hand Oem battery Thinking of buying a 2019 Bmw m4cs battery used It’s dated on 2019 How can I check to see if the battery still good or how I can ask him to show me to see if the battery is good? What do I look for? Thank you f80 family
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05-01-2023, 02:44 PM	#2
ron_s55 Enlisted Member 24 Rep 37 Posts Drives: 2015 M3 Join Date: May 2022 Location: US iTrader: (0)	At minimum it should show a voltage at the posts, ~13.2v. That's the avoi the case where the internal BMS disconnected the battery to protect it from undervoltage, so it would show 0 volts. Besides that, I don't really know, since it's not a traditional lead acid battery.
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