Hello, I noticed your conversation regarding our batteries and wanted to offer some assistance. Unfortunately, there are more than 60 different sizes of automotive batteries and we do not offer batteries that we consider â€śdirect-fitâ€ť replacements for every vehicle, including many MB models. However, many MB owners have successfully used our batteries in applications that we consider â€ścustom fitmentsâ€ť and may be able to offer input as to which batteries they used and how they safely mounted them.
You can find all the specifications for our YellowTop batteries here- Optima YellowTop Specs - Yellow Cap Batteries by Optima
and our RedTop batteries here- Optima RedTop Specs - Red Top AGM Batteries by Optima
Any custom application should consider these guidelines-
â€˘ Hood Clearance â€“ There should be at least Âľâ€ť clearance between the top of the battery terminals and the underside of the hood. When we do our fitment studies we put a ball of clay on top of the post, and VERY carefully close the hood to make sure that nothing makes contact. By measuring how much the clay is squeezed down when the hood is closed, we can know how much hood clearance we have.
â€˘ Trunk/Interior Mounting â€“ If your battery is mounted inside the passenger compartment or trunk (common in many European makes) the battery must be vented to the outside of the vehicle. Optima group 27, 51, 78, 34C, and 31 batteries all have ports for connecting a vent hose.
â€˘ Side Terminals â€“ Optima 34/78, D34/78, 75/25 and D75/25 batteries have both top and side terminals. If you are using one of these batteries in a vehicle that uses the top terminals, it is important to ensure that the side terminals can not come into contact with anything metallic (for example, the firewall or fender well), thereby causing a short. We suggest keeping the post protectors on the terminals you are not using.
â€˘ Battery Modifications â€“ Cutting, drilling, trimming or otherwise modifying your Optima battery may present a safety hazard and will void the warranty.
â€˘ Mounting â€“ Your Optima battery must be securely mounted. The terminals are not intended to be used to secure the battery. Using the terminals in this way will damage the battery and void your warranty.
â€˘ Heat â€“ Protect your battery from high heat, such as turbochargers or exhaust manifolds
The quality of our batteries has always been excellent and continues to improve. Most of the â€śbadâ€ť batteries returned to us now are just deeply-discharged and work fine, when properly recharged. This video explains how to recharge a deeply-discharged AGM battery-
If you have any battery-related questions, Iâ€™ll do my best to answer them.
eCare Manager, OPTIMA Batteries, Inc.
Optima Batteries | Facebook