Long term parking and battery discharge

[Zimm]

Wir hatten einmal eine (fast) leere Batterie, obwohl die Anzeige nicht ausging. Der Motor sprang trotzdem an und die Batterie wurde über 30 Minuten mit über 100A geladen.
View attachment 7894557

my loaner did that. mine? it will peak at 60 after staring and then goes to trickle charge. no such alternator enthusiasm.

 

[Tom109]

My Grenadier has now been sitting for 21-days, and I’ll take it on a trip this weekend. I’ll post my battery SoC when I fire it up. BLE monitors fitted to both batteries, so I should get data from them as well.

 

[Logsplitter]

Cracked gearbox doesn't sound good.. How did that happen? Thought it was near on indestructible

Result of the failed C clip in the front prop CV joint , which caused prop to fail a year ago, causing various damaged components and gearbox oil loss. . Small cracks where plastic oil pan screws go into the casting. Not picked up at the time of the repairs and has been weeping very slowly since. This was identified when it went in for other works.

 

[Zimm]

Result of the failed C clip in the front prop CV joint , which caused prop to fail a year ago, causing various damaged components and gearbox oil loss. . Small cracks where plastic oil pan screws go into the casting. Not picked up at the time of the repairs and has been weeping very slowly since. This was identified when it went in for other works.

JB Weld time!!

 

[Logsplitter]

JB Weld time!!

Had I been somewhere remote and or out of warranty that’s what I would have done. Also out of warranty I’d have had the gearbox taken out and welded to repair it, once I could get to decent aluminium welder facility .

 

[Tom109]

Case study: My Gren has been parked since 8-August. Doors were left open as I was fitting solar and stripping the interior. So in that time I probably only activated battery & head unit a few times.

EDIT: estimated 8-Aug SoC: 95%

7-Sept-2025
SoC: 77% as indicated on the head unit.

My battery monitors:

Victron satus page:

Coming off two days of rain so the sky is full cloudy. I’ll probably head out late afternoon and full sun is forecast for this week.

 

[Logsplitter]

Case study: My Gren has been parked since 8-August. Doors were left open as I was fitting solar and stripping the interior. So in that time I probably only activated battery & head unit a few times.

7-Sept-2025
SoC: 77% as indicated on the head unit.

My battery monitors:
View attachment 7908107
Victron satus page:
View attachment 7908108

Coming off two days of rain so the sky is full cloudy. I’ll probably head out late afternoon and full sun is forecast for this week.

What battery monitors are you using

 

[Tom109]

What battery monitors are you using

The BLE version suggested by @TheDocAUS