What battery group size does the 1990-1996 Infiniti Q45 take?

The 1990-1996 Infiniti Q45 takes a BCI Group 27 battery. Pick a battery with at least 625 cold cranking amps; more is a safe upgrade. The group code is what makes the battery physically fit the tray and reach the cables — buy by group. This is cross-checked against the automaker's own battery chart and a retailer finder; your owner's manual is the final word.

1990-1996 Infiniti Q45 battery group size

The exact BCI group size your Q45 takes — the code that decides which battery physically fits and reaches the cables. Cross-checked against the automaker's own chart and a retailer finder so you buy the right one the first time.

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Battery group size

27Flooded lead-acid2 sources

Verified · cross-checked against 2 independent sources · Jun 2026

OE minimum CCA

≥ 625

Choose at least this — never a verified figure

A battery is bought by its group size. Shop Group 27 batteries that physically fit — double-check the group printed on the battery against your car before you buy.

Find a Group 27 battery on Amazon

Where this came from

Interstate Batteries 2023 Application Guide (BCI/Clarios feed — retailer finder, one witness) — source“Infiniti • Q45 1996-90 V8/4.5L 27 625”
oem_parts — source“999M1-NB27F ... Group 27 Battery ... INFINITI”

The group size carries our verified badge only when the automaker's own battery chart and an independent retailer finder agree on it — two genuinely separate sources, never two resellers of the same data. CCA is shown as an OE minimum, a “choose at least this” floor, never a verified number, because the right CCA is a property of the battery you pick. Your owner's manual is always the final word.