12v battery issue

[LDN21]

My MG ZS EV Exclusive (2020) has started acting a bit odd recently it keeps coming up with 12v battery low warning and a few times has not started due to this.
I have been able to get the car started by briefly plugging in the charging cable what is fine at home but not when out (not yet had it been an issue when out)
I have disconnected the battery and waited a few minutes before reconnecting and it’s still causing issues.
Does anyone know what else I should check or should I do a MG Assist call out with the AA as believe they are able to replace batteries.

One thing to add it had its service mid July and issue started about a week ago but the radio has been acting funny since start of the month but this has fixed itself by the battery reset.

 

[Trisolaris]

Same problem over here. MG is supposedly working on the issue. An initial attempt to resolve the issue by replacing the infotainment module failed last week.

 

[Spinynorman]

I had this - called out the AA when it finally wouldn’t start after using a big battery booster - as it recovered before… AA said the voltage far too low for a recharge and said he could replace it but it cost over £200!!. As I couldn’t wait, I paid it but you can buy your own battery for a lot less and do it yourself in about 15 minutes. All you need is a wrench/spanner (10mm I think)) disconnect the two terminals then the free it from the cradle and put the new one in. Some posts here recommending online purchases for ZS EV Gen 1. I haven’t had a problem since replacing the SAIC battery and I do very few miles to keep it charged properly, so use a battery maintainer to keep it charged.

 

[JohnV6]

Take off the -ve black terminal first. Replace it last. Don't forget to put Vaseline or electrical grease on the terminals.