Thread: Auxiliary Battery Issues

I'm having battery issues with the auxiliary Yellowtop Optima, does anyone know what could be causing this to happen (see attached) within 7 days of being connected to even just a 50mA drain (I disconnected the solenoid and let it sit there for 7 days, it drained down to 11.9V from 12.7 with 50mA read from the ammeter in series.)

I've taken it in for a warranty check, but am being told it's the car, basically, as he can't get the battery to sulfate like it is when in the vehicle.

Attached pic is from when i first noticed it. I clean it up and took it to get checked, was told it's fine, re-fitted and it pooled on the lid again. Not sure how it's not happening for the testing company, he said it tested it at 4A for a long period of time.... Not sure what to do at this point, it should be getting replaced whether it happens during his test or not in my opinion as it's meant to be sealed i thought???

How can it be the car's fault when the start battery is twice as old and fine?

From research i found it's most likely a busted terminal seal that's causing the fluid to ooze out through the terminal base...

Main problem is being from another state, and the fact the company i bought it through closed down so dealing with Optima direct...

Any advice? Would you trust a batter that goes from freshly clean to pooled with fluid within a week? Should this be being replaced whether he can reproduce it or not? Seeing as it's meant to be sealed and is clearly no longer...

I'll call the Optima contact again on Monday, my main issue is with the guy testing it tbh. Gives a report saying there's nothing wrong with it when I drop off a sealed battery looking similar to the above picture. . .