Rotten Egg smell when starting van if left for several days to a week

[Pete C]

Which battery - starter or leisure ?

Pete

 

[djgriff]

Which battery - starter or leisure ?

Pete

This would be the starter battery as 14.8v seems a little high for an agm, cheers

 

[yossarian]

Check that the vent tube is attached to the battery (if fitted) and that it's not blocked.

Rotten eggs suggests sulphur. Adblue is basically urea CO(NH2)2. IE no sulphur.

It sounds like it might be your mppt. If you have not set the pin code to something secure some kid could have fiddled with the charge parameters via Bluetooth.

 

[djgriff]

Check that the vent tube is attached to the battery (if fitted) and that it's not blocked.

Rotten eggs suggests sulphur. Adblue is basically urea CO(NH2)2. IE no sulphur.

It sounds like it might be your mppt. If you have not set the pin code to something secure some kid could have fiddled with the charge parameters via Bluetooth.

I’ll check the codes on all my Victron equipment, cheers

 

[Pete C]

14.8 is fine- it's what the alternator puts out.
How old are both your batteries ?

Pete

 

[yossarian]

If your leisure battery has a shorted cell or the mppt or b2b is set at too high a voltage you will get a sulphur smell from the battery.

The mppt will disguise the low battery voltage during the day.

 

[djgriff]

14.8 is fine- it's what the alternator puts out.
How old are both your batteries ?

Pete

The starter is 18months, the leisure is 12 months.. the starter always seems to drain towards 12.3 volts over a week or so. Even bought a Victron 15amp smart charger. Maybe the starter battery is faulty.. hmm hard to know

 

[djgriff]

If your leisure battery has a shorted cell or the mppt or b2b is set at too high a voltage you will get a sulphur smell from the battery.

The mppt will disguise the low battery voltage during the day.

Will double check these today, thanks for the info appreciated
Cheers