

It just means that they include the terminals in the dimensions, so you can't easily determine the dimensions of just the battery casing.Īlso, some of the casings are different. Optima, and most manufacturer's provide size information in terms of the absolute size. The original battery trays in V8 Falcons and Rancheros wouldnt accept group 24, 24F, or Optima batteries without modification, and often the results are. It means that you can take your Land Cruiser from the US to Mongolia or Peru and still get the same battery size (well.assuming they stock that size).īCI group numbers look like "34" or "34M".

Most aftermarket battery trays prioritize Optima batteries in a Group 34 size range.Īll batteries are in a particular BCI Group.īCI groups are basically internationally recognized battery size and configuration standards. We're going to talk about a few of the different Optima battery configurations so that you can avoid some common problems.
