I'm planning on buying either the Battery Tender Plus (Deltran) or the BatteryMINDer (VDC Electronics). I searched this forum and most everyone seems to be using the Battery Tender. A few people have the BatteryMINDer and also seem to like it.

The BatteryMINDer has a cycle that supposed to reduce or elliminate sulfation. I don't know if that's just a gimmick. I've never heard of sulfation until I read about it on the VDC website. And I'm concerned about the charger's resonant pulse current during the condition cycle and what it might do to the car's electronics. I don't know if VDC instructs people to disconnect the battery from the car when using the battery conditioner mode.

Any comments plus or minus about these chargers? I need to maintain my Mercedes' battery during the winter months and also even during the summer when I don't drive it for 1-2 weeks.

Thanks for your comments.

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Dave

1998 E320
2001 SLK320
2000 Lexus RX300