ACDelco Batteries

ACDelco Batteries: What They Are

ACDelco supplies automotive batteries engineered to meet OEM specifications for GM vehicles and many non‑GM makes. The lineup includes maintenance‑free flooded lead‑acid and AGM models across popular BCI group sizes, with cold‑cranking amps (CCA) commonly ranging from 400–900 (some models up to ~850 CCA for mid/large sizes). Selected retailers also carry ACDelco alkaline batteries for household devices, but this page focuses on automotive fitment.

How to Choose the Right ACDelco Battery

1. Confirm group size and polarity: Check your owner’s manual or the existing battery label for BCI group size (e.g., 24F, 35, 48/H6, 94R) and terminal orientation.
2. Match technology: If your vehicle uses start‑stop or specifies AGM, choose an ACDelco AGM. Otherwise, a flooded lead‑acid model is typically appropriate.
3. Check CCA for climate: Cold climates benefit from higher CCA. As a rule of thumb, meet or exceed the OEM CCA.
4. Consider electrical load: Heavy accessory use (heated seats, audio upgrades, frequent idling) may favor AGM for better cycling and vibration resistance.
5. Review warranty: ACDelco warranties vary by line and group size (commonly 18–48 months). Choose based on usage and desired coverage.

Flooded vs. AGM: Which ACDelco Type Fits Your Use

Feature	Flooded Lead‑Acid	AGM (Absorbent Glass Mat)
Best for	Conventional vehicles, daily commuting	Start‑stop systems, high electrical demand, frequent short trips
Starting power (CCA)	Strong; varies by group size	Strong; typically similar or higher vs. flooded
Cycling & vibration	Good	Better; plates immobilized by glass mat
Maintenance	Maintenance‑free design	Maintenance‑free; sealed, spill‑resistant
Use if	You want a cost‑effective OEM‑style replacement	Your vehicle requires AGM or you need superior cycling and durability
Avoid if	Your car mandates AGM or you do many short, accessory‑heavy trips	Your charging system is not compatible with AGM (rare; check manual)

Key Specifications (Typical Ranges)

• Voltage: 12V for automotive starting batteries
• CCA: ~400–900 depending on group size (some models up to about 850 CCA)
• Reserve Capacity: ~60–150 minutes (varies by model)
• Warranty: Commonly 18–48 months (free replacement period varies by line)
• Fitment: Popular sizes include 24F, 35, 48/H6, 49/H8, 94R, and more

Installation Checklist

Estimated time: 20–45 minutes DIY; add 10–30 minutes if battery registration is required by your vehicle.

1. Save radio presets and settings as needed. If applicable, maintain memory with an OBD memory saver.
2. Wear eye/hand protection; work in a ventilated area with the ignition off.
3. Remove negative (–) cable first, then positive (+). Remove hold‑down and old battery.
4. Clean tray and terminals; install the new battery with the same orientation. Secure the hold‑down.
5. Connect positive (+) first, then negative (–). Verify tight, corrosion‑free connections.
6. If your vehicle requires it, perform battery registration or reset with a compatible scan tool.

Maintenance and Troubleshooting

• Voltage checks: Fully charged at rest ~12.6–12.8V. Below ~12.4V indicates partial discharge; recharge with a smart charger.
• Charging system check: Engine running typically ~14.2–14.8V. Persistent low or high readings warrant inspection.
• Signs it’s time to replace: Slow cranking, repeated jump starts, swelling, or resting voltage that drops quickly after charging.
• Storage: Keep cool and dry; maintain charge above ~12.4V if stored for extended periods.
• Recycling: Return used batteries to a retailer or recycling center; most accept cores and may provide a core credit.

Warranty and Date Codes

ACDelco offers varying free‑replacement warranty periods (commonly 18–48 months) depending on line and group size. Keep your receipt for the best coverage. A manufacturing date code is typically stamped or labeled on the case; formats vary by plant and series but often include month and year within the string. If unsure, ask the retailer to verify the build date so you receive a fresh unit.

Compatibility Notes and Alternatives

• ACDelco batteries are designed for GM vehicles and fit many other makes when the correct group size and specs are chosen.
• Some European and luxury models require battery registration/coding after replacement; check your service manual.
• If your vehicle originally came with AGM, do not downgrade to flooded. Upgrading flooded to AGM is usually acceptable if the charging system is compatible.
• For non‑automotive needs (boats, powersports, or household devices), check ACDelco’s marine, powersport, or alkaline lines specifically labeled for those applications.

FAQ

Do I need an AGM battery?

Yes if your vehicle specifies AGM (common with start‑stop systems) or you want better cycling and vibration resistance. Otherwise, a flooded ACDelco battery that meets OEM specs is usually sufficient.

How much CCA do I need?

Meet or exceed your vehicle’s OEM CCA. In cold climates, higher CCA can improve cold starts; avoid exceeding OEM by an extreme margin if it compromises fitment or reserve capacity.

How long will an ACDelco battery last?

Typical service life is ~3–5 years for flooded and ~4–7 years for AGM, depending on climate, driving patterns, and charging system health.

Can I replace a 24F with a different group size?

Only if the alternative size matches tray dimensions, terminal orientation, and cable reach, and meets OEM electrical specs. When in doubt, stick to the specified group size.

Where can I recycle my old battery?

Most auto parts stores accept used lead‑acid batteries and may offer a core refund. Municipal recycling centers also accept them.