H7 AGM Battery Dimensions and Group 94R Fitment Guide | Size

H7 and BCI Group 94R describe the same case size — roughly 12.4 × 6.9 × 7.5 inches — but matching those numbers alone never proves fitment.

Four checks decide whether a replacement battery works, and case size is only the first. Read the H7 AGM battery dimensions and Group 94R fitment guide as a pure measuring exercise and you’ll skip the other three — terminal polarity, hold-down hardware, and chemistry — which is how a battery that physically fits ends up dragging down charging, start-stop, and its own lifespan.

The numbers below come from published spec sheets for current 94R models, not from a parts-counter guess.

Is An H7 Battery The Same As Group 94R?

Yes. H7, BCI Group 94R, DIN H7, and EN LN4 are four names for one case size, and US retailers list them interchangeably. Published figures land between 12.4 and 12.44 inches long, 6.9 and 6.94 inches wide, and about 7.5 inches tall.

Interstate folds both labels into one product name, the MTX-94R/H7. AutoZone’s listing for the Duralast Platinum H7-AGM shows all three designations on one spec sheet — BCI 94R, DIN H7, EN LN4. The labels travel together because they describe the box, not the electrical guts inside it.

One label trap: 94R is not 94. The R means the terminals sit reversed compared with the non-R version of the same case, so read the polarity diagram instead of trusting the number.

H7 AGM Battery Dimensions Across Real Group 94R Models

Every H7 AGM case on a US shelf lands within about a tenth of an inch on length and width — the spread is in cold-cranking amps, reserve capacity, and warranty. Here’s how the published numbers stack up.

Electrical specs vary as much as the stickers do. Comparing five spec sheets side by side gets old fast; our roundup of the best H7 AGM battery picks lines the tested options up in one place.

Warranty length is the quiet divider. Duralast backs the Platinum Elite H7-AGMEL for five years, OPTIMA covers the YellowTop DH7 for three, and Weize runs 36 months — a difference worth weighing on a part buried under the hood.

Six Checks That Decide Whether A 94R Battery Actually Fits

A battery fits when six things line up: the group size your vehicle calls for, tray and hood clearance, terminal polarity, the hold-down design, the chemistry the charging system expects, and the registration step on newer cars. Miss any one and the battery either won’t seat or won’t last.

1. Confirm the required group size and technology in the owner’s manual or a vehicle-specific battery selector. Interstate’s vehicle fitment guidance warns that some vehicles run more than one battery configuration and directs buyers to match full vehicle information, including PR codes where they apply.
2. Measure the tray and the clearance above it. Allow for terminal height, cables, vent tubes, and the hold-down clamp, because a case that matches on length and width can still bind.
3. Match terminal polarity exactly. Most 94R listings show negative on the left and positive on the right from the specified front view, but confirm the replacement maker’s diagram and never force a cable to reach.
4. Check the base and the hold-down. Group numbers identify a case family, not the retaining bracket on your specific tray, so eyeball the clamp and the foot of the new case against the old one.
5. Keep the chemistry. If the car came with AGM — common on start-stop vehicles — replace with AGM. Dropping in flooded or EFB can throw off charging control and shorten battery life.
6. Register the battery if the car asks. Many newer vehicles need a battery-management reset or coding after replacement, and the procedure is vehicle-specific — get it from the manufacturer’s service information, not a guess.

When it’s right, the case drops flat onto the tray, the clamp closes by hand before you reach for a wrench, and both cables land on their posts with slack to spare.

AGM batteries are sealed, but they still store enough current to weld a wrench to a post. Wear eye and hand protection, keep sparks and loose tools away, and recycle the old battery through the retailer that sold you the new one.

Case size narrows the shelf to a handful of options; polarity, hold-down, and chemistry pick the one that stays.