Group 51R 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: 238 mm
- Width: 129 mm
- Height: 223 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
| Vehicle | Engine / trim | Battery position | Condition |
|---|---|---|---|
| 2015 Honda Accord | L4/2.4L | primary_low_voltage | Not documented |
| 2019 Honda CR-V | L4/2.4L | primary_low_voltage | Standard (1) |
Products with this group designation
| Product | Technology | Published CCA |
|---|---|---|
| Interstate SC51RDA | AGM | 450 |
| Interstate MTX-51R | AGM | 435 |
| PowerVolt PV-51R | Flooded | 430 |
Explore Group 51R 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.
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Search Group 51R car batteries on AmazonUse the battery group comparison to compare envelopes, then check the exact product and OEM instructions.
Sources and scope
- Interstate Batteries — SC51RDA — 2015 Honda Accord L4/2.4L (checked 2026-11-01)
- Interstate Batteries — MTX-51R — 2019 Honda CR-V L4/2.4L (checked 2026-11-01)
- Interstate Batteries / PowerVolt — PowerVolt 2025 US automotive battery application guide (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.