McLaren supercars are sensitive to voltage stability, charge acceptance, and vibration. Many late models ship with a lightweight lithium 12V (with strict charging logic), while earlier cars and some trims use AGM (Absorbent Glass Mat). Below you’ll find model-savvy picks, sizing cues, and how to swap without upsetting the car’s electrical system. When you’re ready to comparison shop, jump straight to curated searches for H5/LN2 AGM, H6/LN3 (Group 48) AGM, H7/LN4 (Group 94R) AGM, and 12V lithium drop-ins (check fitment and BMS requirements for your VIN).
Table of Contents
- Quick Picks for McLaren Owners (By Use Case)
- Top Battery Types for McLarens (What to Choose & Why)
- McLaren Model-Specific Buying Tips
- McLaren Battery Fitment Cheat Sheet (Most-Common Sizes)
- Spec Targets: CCA, RC, and Warranty
- Best Car Battery Brands for McLaren & Where-to-Buy
- McLaren Car Battery Installation Guide (DIY or Shop)
- McLaren Car Battery Maintenance & Longevity
- Contact McLaren Customer Service & Support
- McLaren Car Battery FAQs
Quick Picks for McLaren Owners (By Use Case)
- Weekend car, stored often: AGM with high RC and a smart maintainer port. Browse H6/LN3 AGM or H5/LN2 AGM. ~$220–$380
- Electronics-heavy (720S/765LT/GT) & short trips: AGM or OE-spec lithium for better charge acceptance and stable voltage. See 12V lithium drop-ins (verify BMS compatibility). ~$600–$1,500 (lithium), $250–$420 (AGM)
- Track use / weight savings: Lithium 12V with automotive-grade BMS and cold-crank spec. Restart-capable lithium. ~$800–$1,600
- Cold climate starts: High CCA AGM. High-CCA Group 48. Add +50–100 CCA over OE where possible
- Hot climate / stop-go traffic: AGM (or EFB if equipped) with higher RC and heat-tolerant design. Compare Group 48 AGM.
- Stored >2 weeks at a time: Keep a low-amp battery maintainer on the car’s approved charge point. AGM/Lithium-safe maintainers. ~$40–$150
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Weize Platinum AGM Battery BCI Group 94R - 12v 80ah H7 Size 94R Automotive Battery, 140RC, 850CCA, 36 Months Warranty, Dimensions 12.4" L x 6.89" W x 7.48" H
Weize Platinum AGM Battery BCI Group 49-12v 95ah H8 Size 49 Automotive Battery, 160RC, 900CCA, 36 Months Warranty, Dimensions 13.9" L x 6.89" W x 7.48" H
Top Battery Types for McLarens (What to Choose & Why)
| Type | Why It’s Good for McLaren | Best For | Typical Price | Shop |
|---|---|---|---|---|
| AGM (Absorbent Glass Mat) | Excellent voltage stability for sensitive ECUs; better vibration resistance; strong cold cranking; compatible with OE alternators/chargers configured for AGM. | Most 12C/650S/675LT/570S/600LT/GT owners; cold climates; frequent short trips. | $220–$420 | Group 48 (H6/LN3) • H5/LN2 • H7/94R |
| Lithium 12V (Automotive-grade) | Huge weight savings; very high cranking output; low self-discharge. Requires compatible BMS and charging profile; some models shipped OE with lithium. | 720S/765LT/GT owners prioritizing weight; track users; late-model cars with OE lithium. | $600–$1,600 | Shop lithium H6-size |
| EFB (Enhanced Flooded) | More robust than standard flooded; better cycle life. Not as voltage-stable as AGM for exotic ECUs but fine on cars designed for EFB. | Service replacements where OE specified EFB. | $180–$300 | Compare EFB |
McLaren Model-Specific Buying Tips
- MP4-12C (2011–2014): Most owners favor a high-quality AGM with strong CCA and RC. Expect $250–$400. Consider adding an SAE quick-connect for tenders. Browse likely H6/LN3 AGM picks.
- 650S & 675LT: High-spec AGM remains the easiest, most compatible plug-in choice. $250–$420. If the car has been converted to lithium, verify charger/tender compatibility.
- Sports Series (570S/570GT/600LT): Quality AGM works for most cars; some builds use lithium. Budget $250–$420 (AGM) or $800–$1,400 (lithium). Add a maintainer if stored.
- Super Series (720S/765LT): Many shipped with lithium 12V. Replace like-for-like or use a reputable conversion kit to AGM if desired. Lithium replacements often $900–$1,600.
- McLaren GT: Similar needs to 720S; prioritize voltage stability. AGM or OE-spec lithium depending on build. $300–$1,500.
- Artura (Hybrid): Separate HV traction pack + 12V accessory battery. Use OE-spec parts and follow tender/charging guidance strictly. Work with a McLaren dealer or specialist for coding. $300–$1,500 (12V only).
McLaren Battery Fitment Cheat Sheet (Most-Common Sizes)
| Model | Common 12V Type | Typical Footprint | Notes | Shop |
|---|---|---|---|---|
| MP4-12C | AGM | H6/LN3 (Group 48) or similar | Verify length/height and terminals; many owners use premium AGM. | Group 48 AGM |
| 650S / 675LT | AGM (some converted to lithium) | H6/LN3 or H7/94R depending on bracket | Check clamp/bracket clearance; do not downsize CCA. | H7/94R AGM |
| 570S / 570GT / 600LT | AGM (select builds lithium) | H5/LN2 or H6/LN3 | Space is tight; measure existing case before ordering. | H5/LN2 AGM |
| 720S / 765LT | OE lithium (many) | Often H6/LN3-class case with lithium module | Replace with OE-spec lithium or use quality emulator kit if converting to AGM. | Lithium H6-size |
| McLaren GT | AGM or lithium (build-dependent) | H6/LN3-class | Prioritize RC for touring; tender during storage. | Group 48 AGM |
| Artura (Hybrid) | 12V accessory battery + HV pack | Dealer/OE-specified footprint | Follow OE guidance; some chargers incompatible with hybrid architecture. | AGM choices |
Spec Targets: CCA, RC, and Warranty
CCA: Cold Cranking Amps RC: Reserve Capacity Tech: AGM / Lithium / EFB
- CCA: Meet or exceed OE spec; cold climates benefit from +50–100 CCA above minimum.
- RC: More RC = steadier voltage for fans/lights/screens in traffic and during short heat-soaks.
- Technology: Do not downgrade from lithium/AGM to flooded; use an approved emulator if converting lithium → AGM.
- Warranty: Target 36–60 months free replacement on AGM; lithium warranties vary 2–5+ years.
- Orientation: Euro sizes (H5/H6/H7) use recessed top posts; verify polarity vs. cable reach.
Best Car Battery Brands for McLaren & Where-to-Buy
| Brand | Why We Like It | Typical Tech | Shop |
|---|---|---|---|
| Odyssey / NorthStar (Enersys) | High-plate density AGM; excellent cranking & deep-cycle robustness. | AGM | Odyssey Group 48 |
| XS Power / Braille | Motorsport-focused; lightweight options; strong vibration resistance. | AGM & Lithium | Braille picks |
| VARTA / Bosch | OE pedigree in Euro case sizes (H5/H6/H7); reliable quality control. | AGM & EFB | VARTA H6 AGM |
| Antigravity / EarthX | Automotive lithium with built-in protection; some with restart feature. | Lithium | Antigravity |
- Amazon: Huge selection and easy returns. Start with Group 48 AGM and lithium 12V.
- Local Euro specialty shops: Useful for coding and testing after install.
- McLaren dealer: VIN-correct parts and software updates; pricier but safest for hybrids and OE lithium.
How to Check Freshness & Authenticity
- Decode the date stamp on the top/label. Choose the newest build (ideally < 3 months old).
- Inspect for straight case walls, no bulges, clean terminals, and intact venting.
- Use a multimeter at rest: ~12.7–12.9V for AGM; ~13.2–13.4V at rest for many lithium chemistries (vendor-specific).
- Buy from reputable sellers; avoid opened/returned batteries without test slips.
Car Battery Warranty Tips
- Prefer free replacement terms (not prorated only). AGM: 36–60 months is common.
- Keep the receipt and test printout after install; warranty follows the serial/build date.
- Some lithium makers require using their approved charger/tender to keep warranty valid.
Weize Platinum AGM Battery BCI Group 48-12v 70ah H6 Size 48 Automotive Battery, 120RC, 760CCA, 36 Months Warranty, Dimensions 10.94" L x 6.89" W x 7.48" H
Weize Platinum AGM Battery BCI Group 47-12v 60ah H5 Size 47 Automotive Battery, 100RC, 680CCA, 36 Months Warranty, Dimensions 9.52" L x 6.89" W x 7.48" H
Weize Platinum AGM Battery BCI Group 49-12v 95ah H8 Size 49 Automotive Battery, 160RC, 900CCA, 36 Months Warranty, Dimensions 13.9" L x 6.89" W x 7.48" H
McLaren Car Battery Installation Guide (DIY or Shop)
- Memory prep: Save radio/seat presets and consider a memory saver if recommended. Open frunk/doors/bonnet releases before disconnecting.
- Safe access: Park level, ignition off, wait for modules to sleep. Use fender covers and trim tools.
- Disconnect negative, then positive. Note sensor leads or IBS (intelligent battery sensor) on the negative cable.
- Remove hold-downs and lift the battery straight up; check for vent tubes (AGM often sealed but some housings vent).
- Clean & prep: Vacuum tray, treat light corrosion, verify cable strain relief and terminal orientation.
- Install new battery: Place carefully, secure hold-down to spec torque, reconnect positive first, then negative.
- Code/register (if applicable): Some cars require battery registration or type selection (AGM vs. lithium) in the body control module. Have a specialist perform this if you lack the tool.
- Health check: Measure resting voltage, start the car, verify charging voltage (~14.2V AGM typical; lithium varies by BMS), clear any transient codes.
- Post-install: Relearn windows/steering if needed; confirm no warning lights remain.
McLaren Car Battery Maintenance & Longevity
- Keep the car on an approved maintainer when parked > 2 weeks. Use lithium-safe chargers for lithium-equipped cars.
- Avoid repeated short heat-soak cycles; take a longer drive weekly to top the battery.
- Check parasitic draw if the car sits; exotic ECUs can pull more than typical.
- Inspect terminals quarterly; tighten to spec and keep them clean/dry.
- Store between 40–80% SOC for lithium during long storage unless OE guidance differs.
Signs You Need a New Battery
- Slower cranking or voltage sag on startup; screens flicker or reset.
- Battery can’t hold 12.4V+ after overnight rest (AGM) or trips a lithium BMS cutoff.
- Frequent low-voltage warnings, odd sensor faults, or module communication errors after sitting.
- Case swelling, chemical smell, or repeated need for jump/maintainer to start.
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Contact McLaren Customer Service & Support
- Official site: cars.mclaren.com
- Find a retailer/service center: McLaren Retailer Locator
- Owner manuals & guides: Check your model’s handbook in the Owners section or request from your retailer.
- Roadside assistance: Via your local McLaren retailer; details vary by region and model year.
McLaren Car Battery FAQs
How long should a McLaren car battery last?
AGM batteries in McLaren road cars typically last 3–5 years in normal use. Frequent short trips, heat, or storage without a maintainer can shorten life to ~2–3 years; careful charging can extend it.
How much is a McLaren car battery?
Expect roughly $300–$600 for a high‑quality AGM replacement (size H6/LN3 or H7/LN4 depending on model). Lightweight motorsport‑grade lithium options can exceed $1,000 and require compatible charging.
What battery type do most McLarens use—AGM or lithium?
Most road‑going McLarens use 12V AGM for durability and accessory loads. Track‑focused variants may use lightweight lithium; only use lithium if the car was designed or re‑mapped for it.
Which battery size fits my McLaren?
Common sizes are European DIN H6/LN3 or H7/LN4, but verify by VIN, owner manual, or measuring the tray and terminal orientation. Space is tight—correct height and hold‑down are critical.
Do I need to code or register the battery after replacement?
Battery monitoring systems benefit from registration/adaptation so the ECU charges correctly and avoids fault messages. Many owners have this performed via dealer or a capable scan tool.
Why does my McLaren battery drain when parked?
Supercars have higher standby draw for security/telemetry. If stored over a week, connect an AGM‑compatible maintainer (via the designated port) to preserve state of charge and prevent faults.
Can I jump‑start a McLaren?
Yes, but follow the owner manual locations precisely and avoid reverse polarity. Prefer a quality jump pack on the recommended posts; after starting, allow the alternator to recharge or use a charger.
What CCA should I aim for?
Match or exceed the factory CCA (often 700–900 CCA depending on size). Cold‑climate owners may benefit from +50–100 CCA within the same physical size.
Will an AGM charger damage the car?
Use a modern smart charger with an AGM mode and correct amperage. Avoid “boost” settings while connected to the car; slow 4–10A charging is safest for sensitive electronics.
How do I know the battery is failing?
Slow crank, repeated battery warnings, dim cluster on start, or low state‑of‑health on a conductance test. If the car sits often, test and recharge before assuming other electrical faults.
Can I install the battery myself?
It’s possible for experienced DIYers, but access can be tight and coding may be required. Protect trim, follow torque specs, and observe negative‑off/positive‑on order; many owners prefer a specialist.
Do lithium batteries improve performance?
Lithium can save several kilograms and improve cranking, but it costs more, may be sensitive to cold, and typically needs a compatible charger and calibration—best for cars designed for it.
The Bottom Line
Weize Platinum AGM Battery BCI Group 48-12v 70ah H6 Size 48 Automotive Battery, 120RC, 760CCA, 36 Months Warranty, Dimensions 10.94" L x 6.89" W x 7.48" H
Weize Platinum AGM Battery BCI Group 47-12v 60ah H5 Size 47 Automotive Battery, 100RC, 680CCA, 36 Months Warranty, Dimensions 9.52" L x 6.89" W x 7.48" H