2024 Toyota Highlander — Battery Size & Group (BCI), CCA, and Replacement Guide

Quick answer

• Gas (2.4L turbo, non‑hybrid)

  • BCI group size: 24F ("reverse" layout)
  • Cold Cranking Amps (CCA): minimum 650; recommended 700–750 CCA in cold climates
  • Reserve Capacity (RC): ~130–150 minutes (typical for quality Group 24F)
  • Battery type: Conventional flooded from factory on most trims; AGM is an excellent upgrade
  • Terminal layout: Top‑post SAE; positive on left when posts face you (24F)
  • Physical dimensions: ~10.25 L x 6.81 W x 8.88 H in (260 x 173 x 225 mm)

• Hybrid (2.5L Highlander Hybrid – 12‑V auxiliary battery)

  • BCI group size: H5 / LN2 / 47 (aux battery in rear cargo area)
  • Cold Cranking Amps (CCA): 600–680 typical (starting demand is low but electronics load is high)
  • Reserve Capacity (RC): ~80–95 minutes (typical AGM H5)
  • Battery type: AGM required (interior‑mounted and optimized for hybrid charging profile)
  • Terminal layout: Top‑post SAE; positive typically on right when posts face you (H5)
  • Physical dimensions: ~9.56 L x 6.94 W x 7.50 H in (242 x 176 x 190 mm)

• Dual‑battery setup: Not used on Highlander (no diesel variant in North America)

Replacement battery options

Popular, readily available replacements. Always verify fitment by year/trim/VIN and battery tray orientation before purchase.

• Interstate

  • Gas: Interstate Group 24F flooded; Interstate AGM 24F (upgrade where available)
  • Hybrid: Interstate AGM H5 (Group 47/LN2)

• DieHard (Advance Auto)

  • Gas: DieHard Gold/Platinum Group 24F (flooded); check for Platinum AGM 24F availability
  • Hybrid: DieHard Platinum AGM 47/H5

• Odyssey (EnerSys)

  • Gas: Odyssey Performance/Extreme AGM Group 24F
  • Hybrid: Odyssey Performance AGM 47/H5

• ACDelco

  • Gas: ACDelco Gold Group 24F flooded; ACDelco AGM 24F (where available)
  • Hybrid: ACDelco AGM H5 (LN2/47)

• Optima

  • Note: Optima’s lineup does not include a direct‑fit for every 24F/H5 application; verify exact fitment before purchase.

(Part numbers vary by line and retailer; confirm exact SKU for your trim. Do not mix group sizes unless the tray, hold‑down, and cables are designed for it.)

AGM vs flooded — which does this vehicle need?

• Gas (non‑hybrid): A high‑quality flooded Group 24F meets OEM requirements and is what many trims ship with. Upgrading to AGM is smart if you drive in extreme heat/cold, run accessories (dash cams, fridge, audio), or want better vibration resistance and longer reserve capacity. If equipped with auto stop‑start, AGM/EFB is preferred.
• Hybrid: Use AGM only. The 12‑V auxiliary battery is interior‑mounted and supports sensitive control modules; AGM’s spill‑proof design and charge acceptance characteristics are required. Do not substitute a standard flooded battery.

Post‑installation relearn / reset procedure

Using a memory saver during replacement reduces resets. If the battery has already been disconnected, perform the following after installation:

1. Initial start and idle learn

• Gas: Start the engine, let it idle in Park for 5–10 minutes with all accessories off. Then turn A/C on and idle for another 5 minutes. Take a short drive with light throttle to allow idle and fuel trims to stabilize.
• Hybrid: Press START to enter READY and let the vehicle sit for several minutes (the engine may cycle). Then drive normally; systems will self‑calibrate.

2. Power windows initialization (each door)

• Key ON (engine running/READY). Fully lower the window using the switch, hold the switch down for 2–3 seconds after it bottoms. Then fully raise the window and hold the switch up for 2–3 seconds. Repeat for all windows with auto‑up/down.

3. Power back door (if equipped)

• Cycle the liftgate fully closed and fully open using the switch. If customization is needed, set the desired open height and press‑and‑hold the gate switch until the buzzer sounds to store the height.

4. Moonroof/panoramic roof (if equipped)

• Fully open, then fully close and hold the switch for 2–3 seconds to relearn the limit positions.

5. Radio/clock/driver profiles

• Re‑enter clock and radio presets; re‑link driver profiles and Bluetooth as needed. Trip meters and average MPG may reset.

6. Steering angle/Yaw calibration

• Typically self‑calibrates while driving straight at moderate speed for several minutes. If a steering assist or stability control light remains on, perform another key cycle and short drive.

No scan‑tool registration is normally required on Highlander after a 12‑V change.

Signs of a failing battery

• Slow crank, clicking on start (gas), or intermittent READY refusal (hybrid)
• Dim headlights or interior lamps that flicker with blower speed
• Random warning lights/communication faults that clear after a jump start
• Start‑stop disabled (if equipped) and frequent auto‑restart failures
• Low resting voltage (<12.4 V) or poor load test results

Common battery issues for this generation

• Short‑trip/low‑use driving: Frequent brief trips and long key‑off periods can leave the battery undercharged, especially in cold weather and on hybrids. Use a smart maintainer if the vehicle sits.
• Parasitic loads: Dash cams, OBD dongles, or devices in always‑hot power ports can drain the battery overnight. Use switched power or unplug when parked.
• Cargo‑area hybrid battery location: On Hybrid models, ensure vents remain unobstructed and the AGM battery is properly secured; replace with AGM only.
• Terminal corrosion or loose clamps: Clean and tighten both posts; inspect the negative‑cable current sensor for secure fit to prevent charging errors.
• Aftermarket accessories: Remote starts and audio amps can alter charging behavior; consider upgrading to AGM with higher RC if many accessories are installed.

Always verify the group size stamped on your existing battery and compare dimensions/terminal orientation. Toyota can make running‑change updates mid‑cycle.

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