Quote:
Originally Posted by Marshall Welch
...I replaced it with a Group 49 AutoZone Duralast Platinum AGM battery...
...I use a CTEK MUS 4.3 Test & Charge to maintain it. It has a choice of 3 charging voltages. I recondition the battery about once a year as recommended.
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I also have a CTEC MUS 4.3, and it is a great unit. However, unless I am mistaken,
one should NOT use the "reconditioning" cycle on an AGM battery. IIRC, the reconditioning cycle is used to remove sulphite deposits from the plates on
conventional (liquid electrolyte) lead-acid batteries. This is done by shocking the dielectric layer off of the plates by using the higher voltage, and de-stratifying the electrolyte by (lightly) boiling it.
While the bubbles will help stir up a conventional battery, if bubbles form adjacent to plates on an AGM battery, they go nowhere... and you've now got less electrolyte contact area on the plates. NOT good.
If I am wrong, someone please correct me so that I am not disseminating incorrect information!
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Current rolling stock:
2001 E55 183,000+ Newest member of the fleet.
2002 E320 83,000 - The "cream-puff"!
1992 500E 217,000+
1995 E300D 412,000+
1998 E300D 155,000+
2001 E320 227,000+
2001 E320 Wagon, 177,000+
Prior MBZ’s:
1952 220 Cab A
1966 300SE
1971 280SE
1973 350SLC (euro)
1980 450SLC
1980 450SLC (#2)
1978 450SLC 5.0
1984 300D ~243,000 & fondly remembered
1993 500E - sorely missed.
1975 VW Scirocco w/ slightly de-tuned Super-Vee engine - Sold after 30+ years.