john445 wrote:
Our MB dealer checked the battery after the first instance and said all is fine.
Anyone else having this problem, it seems sitting for a few weeks should not drain the battery?
A really LOT of shops don't know how to properly check batteries.
The answer you got of "all is fine" isn't good enough.
They should have told you, specifically for that model, what you should be doing with the batteries during storage. If the dealer doesn't seem to know (have you looked in your owners manuals?) then contact the manufacturer.
The battery might be bad due to neglect while sitting on the lot.