W212 auxiliary battery, anyone tried these Power Sonic ones?

[Chugg]

As per title, anyone tried one of these? I’m getting the aux batt malfunction message so am going to take a punt on one. Bit sceptical at twelve quid a go, but we’ll see.

Power-Sonic PS-1212 Battery Replacement for Mercedes Benz N000000004039 873745005513 | eBay

 

[br1anuk]

Thats the wrong battery for an E350. Look up the other threads, think its a Yuasa ytx14. Located in the boot not the dashboard.

 

[Chugg]

Thats the wrong battery for an E350. Look up the other threads, think its a Yuasa ytx14. Located in the boot not the dashboard.

Erm, I’ve already taken out the existing original MB aux batt (part no. N000000004039 Redirect Notice) from behind the dash, tested it and measured it up against this ‘un (few mm slimmer but will fit in carrier fine, same V and Mah). You are thinking of the larger motorbike type battery required for models with ECO start/stop. Mine is 61 plate estate model without start/stop (deleted on Oasis) so doesn’t come with the bigger battery in the boot
Google Image Result for https://ssli.ebayimg.com/images/g/S7sAAOSwve1aqoZE/s-l640.jpg

Cheers for the input anyway though bud