Group 78 is a physical group reference. A group match alone cannot establish chemistry, polarity, venting or final vehicle-to-product fitment.
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BCI maximum envelope
- Length: 260 mm
- Width: 180 mm
- Height: 186 mm
- Recorded aliases: Not documented
These are group maximum dimensions, not actual measurements of every product.
Before ordering a battery
Check the actual battery position, chemistry, voltage, terminals, tray, hold-down, vent, CCA requirement and any BMS registration procedure. Group size alone does not approve a replacement SKU. High-voltage traction batteries are outside this guide.
Researched vehicle applications
No source-backed rows are available for this exact selection.
Products with this group designation
| Product | Technology | Published CCA |
|---|---|---|
| ODYSSEY ODP-AGM78 | AGM | 800 |
| Interstate MTZ-78 | AGM | 800 |
| PowerVolt PV-78 | Flooded | 600 |
| Interstate MTX-78 | AGM | 740 |
Explore Group 78 batteries on Amazon
A search result is not an approved replacement. Confirm chemistry, voltage, CCA, terminals, case, hold-down, vent and vehicle-specific registration before buying.
(paid link)
Search Group 78 car batteries on AmazonUse the battery group comparison to compare envelopes, then check the exact product and OEM instructions.
Sources and scope
- EnerSys / ODYSSEY — ODYSSEY Battery Specifications — US (checked 2026-11-01)
- Interstate Batteries US — MTZ AGM car battery product specifications (checked 2026-11-01)
- Interstate Batteries / PowerVolt — PowerVolt 2025 US automotive battery application guide (checked 2026-11-01)
- Interstate Batteries — Interstate MTX car and truck batteries family specification (checked 2026-11-01)
- Battery Council International — BCI Battery Service Manual — public group-size excerpt (checked 2026-11-01)
Research checked November 2, 2026. A source-observed size is not final product fitment. Confirm the actual vehicle and current manufacturer guidance.