I'm charging my battery while it's in the trunk on my 2000 SL500.
You can - but it is not a good idea. When batteries are charging, you want as much air circulation as possible to reduce any danger of gases.
Thanks Mark, that's what I was thinking and had to ask to be sure. Time to buy a new battery. I had this one trickle charging for two days and still does not show a complete charge. It's an easy fix for $139.99 - 10% for a Delco Gold. Piece of mind is worth $130.00.
That's a good price for the 500 battery. Most are 160 and up.
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