The H6 OPTIMA battery has a C20 rate of 72Ah and is rated at 800 cold cranking amps. However, the BCI refers to that exact same battery as a "Group 48" battery. Marko 2007 A6 Avant 3.2L Black/Black, 245k miles. Criteria For Choosing the Best Car Battery Cold-Cranking Amps. To complicate it even further, many brands and retailers will add additional characters to those designations, turning a Group 48/H6 battery into a DH6 or an MTP-48/H6. Stock AC/Delco 48/7yr weighed 40#. They are … It appears there is a H7 size as primary and H6 size as secondary/auxiliary battery. For example the “Group48” size as it is called in the USA, is also called the “ Which brand batteries last the longest? Should I stick with and replace standard hd lead acid battery at same sizes as originals, or update to AGMs, etc. Also known as H7, L4, or LN4 batteries, they are also used in light industrial and marine applications. It's a DIN battery size that is sometimes also referred to as a Group 48 battery. People also ask, what is the difference between h6 and h7 battery? Likewise, what is the difference between h6 and h7 battery? With the H6 or H8 you may have to make a mod to the hold down clamp - not difficult and documented elsewhere.. It appears the secondary/auxilary battery is H6 vs. H7 since the tray won't fit an H7 sized battery. Although some vehicles may accommodate a battery from more than one group size, it is important that you use a battery approved for use in your vehicle. While the H7 is the OEM size, H^ and H8 will fit also - H6 is 1.5 inches shorter (length) while the H8 is 1.5 inches longer. i ended up going with the Walmart H7 battery because i didn't realize our battery trays will take either one, but they do! Other names used to refer to this battery are: H7, L4, LN4. FWIW, the "case" size is not necessarily going to mean it is the proper battery. Parts are just part of what we do. Scotty@Advanced. Car batteries tested: Optima AGM, Duralast (Autozone), Everstart (Walmart), Diehard AGM (Sears), SuperStart (O'Reilly), and Autocraft (Advance). While the H7 is the OEM size, H^ and H8 will fit also - H6 is 1.5 inches shorter (length) while the H8 is 1.5 inches longer. Group 94R batteries are used to power a good number of vehicle models - especially those by the German brands (BMW, Mercedes, Audi, and Volkswagen). Group size is typically based on your vehicle’s make, model and engine type. Shop for Duralast Battery H6-DL Group Size 48 680 CCA with confidence at AutoZone.com. It would be rare to find a 94R that isn't up to the task, but there are most certainly some 48s that are not. 12-05-2012 05:20 PM #2. ? EXAMPLE: using Interstate's battery spec sheet and staying within MegaTron Plus the 24F weighs in a 50# vs 41-42# for a 48/H6/91 sized case. What is a H6 battery? For example, the DIN group (battery size) for a 2016 Mini Cooper is an H6. The H6 is a 48 Group, and the H7 is a 94R Group, but you can buy both those batteries from some brands that are NOT the proper rating for a Volkswagen. The Battery Council International (BCI) assigns numbers and letters for each battery group size. Rectangular in shape, with recessed top post terminals, the OPTIMA H6 YELLOWTOP is 10.94 inches long, 7.48 inches tall and 6.89 inches wide, weighing in at just over 54 pounds. Cold-cranking amps (CCA) is a measure of how well the battery starts an engine during extreme cold weather and is a crucial car batteries ratings.Each vehicle model requires a certain amount of … Get yours online today and pick up in store.