Bought Sears Diehard Advanced Gold AGM battery - $135.01 before tax
Thread Starter
MBWorld Fanatic!
Joined: Aug 2009
Posts: 2,899
Likes: 93
C63 AMG
Bought Sears Diehard Advanced Gold AGM battery - $135.01 before tax
I decided to replace the OE C63 Group 49 battery before its time and put that in the family Audi. While searching online I checked out Sears and found the Diehard AGM for $135.01 during their Labor Day sale, before tax and core charge. (My core charge was waived but that's another story.) Needless to say I bought it. It's identical to the factory battery - both weigh exactly the same down to the ounce - and Johnson Controls make virtually all the AGM batteries sold/supplied in the U.S. under various labels. I was going to post this on Mon. night when I got back but the sale was already over, however it was the lowest price by about $30 that I've ever seen for a group 49 AGM battery and I'm sure the sale price will be repeated at some point.
Super Member
Joined: Feb 2012
Posts: 620
Likes: 7
From: Sacramento, CA
'09 C63
How did you swap the batteries? I always thought that you needed something to stabilize the voltage before disconnecting the battery, otherwise some of the electronics may malfunction due to insufficient/lack of voltage?
Thread Starter
MBWorld Fanatic!
Joined: Aug 2009
Posts: 2,899
Likes: 93
C63 AMG
The actual swap is easy. I wanted to do it myself because of subwoofer wiring to the positive terminal but just remove the trunk floor cover and it's all exposed. You'll need 10mm (for the terminals) and 13mm (for the clamp) sockets or wrenches. Be sure to reattach the vent tube on the left (front) side of the battery and to plug the corresponding hole on the right (back) side. You'll probably have to take those fittings off the old battery. It's a five minute job.
Thread Starter
MBWorld Fanatic!
Joined: Aug 2009
Posts: 2,899
Likes: 93
C63 AMG
I connected a Battery Tender Junior float charger to the engine compartment charging terminals during the installation...works like a charm.
Super Member
Joined: Feb 2012
Posts: 620
Likes: 7
From: Sacramento, CA
'09 C63
Trending Topics
Junior Member
Joined: Jun 2013
Posts: 25
Likes: 0
C63 AMG
They are excellent batteries. The gold and the platinum series.
They are however NOT made by Johnson Controls (luckily).
They are made by Oddysey batteries and they are VERY good batteries, unlike the junk tha JC makes.
Johnson Controls single handedly ruined one of the best batteries you could but, the Optima. Once JC bough them and moved their production out of the US the batteries went to crap.
I have used the "diehard" AGM in several applications including diesel trucks and on my Jeeps with huge winches and they don't miss a beat even when getting bounced around like crazy in a rock crawler!
They are however NOT made by Johnson Controls (luckily).
They are made by Oddysey batteries and they are VERY good batteries, unlike the junk tha JC makes.
Johnson Controls single handedly ruined one of the best batteries you could but, the Optima. Once JC bough them and moved their production out of the US the batteries went to crap.
I have used the "diehard" AGM in several applications including diesel trucks and on my Jeeps with huge winches and they don't miss a beat even when getting bounced around like crazy in a rock crawler!
MB World Stories
The Best of Mercedes & AMG
Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun
Verdad Gallardo
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren
Verdad Gallardo
8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine
Verdad Gallardo
Flawlessly Restored Mercedes 190E Evo II Heads to Auction
Verdad Gallardo
Electric Mercedes C-Class Unveiled: 11 Things You Need to Know
Verdad Gallardo
Mercedes EQS Gets A Major Update: Everything You Need to Know
Verdad Gallardo
5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve
Verdad Gallardo
Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping
Verdad Gallardo
10 Most Reliable Mercedes-Benz Models You Can Buy Used
Verdad Gallardo
Thread Starter
MBWorld Fanatic!
Joined: Aug 2009
Posts: 2,899
Likes: 93
C63 AMG
They are excellent batteries. The gold and the platinum series.
They are however NOT made by Johnson Controls (luckily).
They are made by Oddysey batteries and they are VERY good batteries, unlike the junk tha JC makes.
Johnson Controls single handedly ruined one of the best batteries you could but, the Optima. Once JC bough them and moved their production out of the US the batteries went to crap.
I have used the "diehard" AGM in several applications including diesel trucks and on my Jeeps with huge winches and they don't miss a beat even when getting bounced around like crazy in a rock crawler!
They are however NOT made by Johnson Controls (luckily).
They are made by Oddysey batteries and they are VERY good batteries, unlike the junk tha JC makes.
Johnson Controls single handedly ruined one of the best batteries you could but, the Optima. Once JC bough them and moved their production out of the US the batteries went to crap.
I have used the "diehard" AGM in several applications including diesel trucks and on my Jeeps with huge winches and they don't miss a beat even when getting bounced around like crazy in a rock crawler!
