Parts Catalog Accessories Catalog How To Articles Tech Forums
Call Pelican Parts at 888-280-7799
Shopping Cart Cart | Project List | Order Status | Help

Go Back   PeachParts Mercedes ShopForum > Technical Information and Support > Tech Help

LinkBack Thread Tools Display Modes
Old 03-13-2001, 12:36 PM
Registered User
Join Date: May 2000
Location: Boise, Idaho
Posts: 80
My 1980 450SL needs a new battery. It's stored 4-5 months and not run. This storage cycle causes battery failure after 5-6 years. I am wondering if anyone has experience with the Optima Battery. See site I've just heard that the optima battery is 1 inch taller than the MB battery and since the battery is enclosed in the trunk, optima won't fit in the case. Any ideas?
1983 300CD 246k sold
1998 C230 52k
1980 450SL 75k needs AC
1999 Subaru Outback Ltd 43k
Reply With Quote
Old 03-13-2001, 08:11 PM
Registered User
Join Date: Jun 1999
Location: Albuquerque, NM USA
Posts: 1,946
This web page is useful for comparing battery sizes. Note that Delco batteries are maintenance free same as Optima, but not certain they are as able to withstand periods of nonuse. As you likely know, the Optima is size 34.
Kent Christensen
'07 GL320CDI, '06 SLK350
Reply With Quote
Old 03-13-2001, 09:42 PM
Ashman's Avatar
Registered User
Join Date: Sep 2000
Location: Sherman Oaks, CA
Posts: 4,748
There is a difference in the batteries.

The optima Spiral Cell batteries cannot be charged with a battery charger direct. You have to run it through another battery, and run jumper cables to the optima battery from the battery that is hooked up to the charger to have it be able to be left on charge or charged.

This is what my Friend who is an Optima Battery Dealer has told me. He was told this by his optima rep.

I think most batteries only last 5-6 years anyway.

Have you thought of just buying a trickle charger for the battery for when it is stored, and going with a battery that is the right size for your car, rather than the optima which you say is taller, and wont fit.

'92 300CE - Sold
2004 C240 - C7 Wheels - Android Radio
2015 ML350 - P1, Pano, Ash poplar wood, Sport Dinamica interior, Running Boards Keyless go.
Reply With Quote
Old 03-13-2001, 11:23 PM
Aaron's Avatar
Join Date: Aug 1999
Location: Cincinnati, Ohio
Posts: 1,935

Get yourself a MB or an Interstate battery. Both are good in my book. Interstate batteries are very long lived as are the NEW Mercedes batteries. Keep a trickle charge on it over the winter and forget about it.

To add to a previous post, yes Delco batteries definitely cannot stand periods of storage. I put a brand new Delco battery in my DeLorean this past summer and sure enough it was dead after the car sat for about six weeks! Took it back and the same result from the second one. Finally got fed up and switched to Interstate (should have done so in the first place).

I've had a Mercedes battery in our 450SL for two years now and it's been sitting most of that time. I unhooked the negative terminal and let it be. Went in not too long ago, just for kicks, hooked the battery back up and BANG! Fired right up! Dumb luck I guess. Those older MB batteries usually stink!
Reply With Quote
Old 03-14-2001, 09:53 AM
Registered User
Join Date: May 2000
Location: Boise, Idaho
Posts: 80
450SL Battery reply

I've decided, with your input, to buy the Interstate battery at the dealers ($99.95). I'll try to follow-up with searches for more information on the optima batteries for later need. I'll put a low charge on the new battery every month or so during storage. Many thanks,
1983 300CD 246k sold
1998 C230 52k
1980 450SL 75k needs AC
1999 Subaru Outback Ltd 43k
Reply With Quote
Old 03-14-2001, 11:30 AM
Registered User
Join Date: Apr 2000
Location: San Antonio, TX
Posts: 387
Optima Batteries

Optima is now owned by Interstate, I think. We've been using the gel celled technology on sailboats for a number of years. They are an EXCELLENT choice for occasional use. Also remember, NO BATTERY ACID to eat up your car, the terminals, fittings, etc. They are a bit more expensive, and the DO require a special charger (they are about $50). If I were in the market for a battery for a car I was going to keep for more than 5 years, I'd jump on an Optimal. By the way, I'm sold on Interstates for regular use. My 190SL has one that's 8 years old...

Bill Streep
San Antonio
'57 190SL (toy)
'08 S5500 (mine)
'09 CLK550 (wife's)
'06 SLK350 (daughter's)
'11 GLK350 (daughter's)
'03 CLK310 (spare)
Reply With Quote


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
Optima Battery Dead in under 3 months lino Tech Help 14 12-19-2004 01:22 PM
intermitent dead battery ("+*#!) MarkM Diesel Discussion 7 12-17-2004 08:11 AM
Battery Optima vs Costco? petaling Tech Help 5 02-18-2004 08:32 AM
Optima Battery Sportline93 Tech Help 5 02-12-2004 09:45 PM
How to mount an Optima battery in a W123 Car 123c Diesel Discussion 17 07-31-2003 04:59 PM

All times are GMT -4. The time now is 06:09 PM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2018, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2018 Pelican Parts LLC - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page