2020 Tesla Model X Battery Size & Group
AI-generated reference. Always verify torque values, fluid capacities, intervals, and procedures against the manufacturer's service manual or OEM repair information before performing work. Repairius is not liable for damage from acting on this content without verification.
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Quick answer
- BCI Group Size: PC1100 / Group 47 (Auxiliary 12V Battery)
- CCA Rating: Not applicable—this is an auxiliary 12V battery, not a starter battery.
- Reserve Capacity: Approximately 60-70 minutes (varies by manufacturer and specific battery)
- AGM vs. Flooded Requirement: AGM (Absorbed Glass Mat) is standard and recommended for the auxiliary 12V battery in the Tesla Model X due to its sealed, maintenance-free design and vibration resistance.
- Terminal Layout: Typically left-positive (common for European-style batteries)
- Physical Dimensions: (Approximate, varies slightly by manufacturer)
- Length: 9.7 inches (246 mm)
- Width: 6.9 inches (175 mm)
- Height: 6.9 inches (175 mm)
- Dual-Battery Setup: Not applicable—the Tesla Model X uses a high-voltage primary battery for propulsion and a single 12V auxiliary battery for vehicle electronics.
Replacement battery options
The 12V auxiliary battery in a Tesla Model X is a critical component for powering vehicle electronics, even though it doesn't crank an engine. Always ensure you select an AGM battery that matches the original specifications.
- Interstate: MTX-47 (Verify fitment for specific Model X years)
- Optima: Optima H6/L3 (YellowTop or RedTop may work, but verify dimensions and terminal layout for PC1100/Group 47 equivalent)
- DieHard: Platinum AGM Group 47 (Verify exact part number and specifications)
- Odyssey: ODP-AGM47 H5
- ACDelco: ACDBAGM47 (Verify exact part number and specifications)
AGM vs. flooded — which does this vehicle need?
The 2020 Tesla Model X requires an AGM (Absorbed Glass Mat) battery for its 12V auxiliary system. Tesla vehicles rely on sophisticated electronics that benefit from the stable voltage delivery and deep-cycle capabilities of AGM batteries. AGM batteries are also sealed and maintenance-free, which is crucial given the battery's location and the sealed design of electric vehicles. Using a traditional flooded lead-acid battery is not recommended as it may not provide the necessary performance and could lead to premature failure or issues with vehicle electronics.
Post-installation relearn / reset procedure
Replacing the 12V auxiliary battery in a Tesla Model X is generally straightforward, but a few steps are important to ensure the vehicle properly recognizes the new battery and avoids error messages. Disconnecting and reconnecting the 12V battery will reset most vehicle systems. After installation, it's recommended to:
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More specs for the 2020 Tesla Model X
Oil Capacity & Filter
Capacity, weight, filter PN, drain plug torque, change interval.
Fluid Type Specs
Engine oil, coolant, ATF, diff, brake, PS, DEF — with OEM spec numbers.
Coolant Capacity & Type
Total system capacity, OEM coolant spec, flush interval, bleed tips.
Transmission Fluid & Service
Trans model, fluid spec, capacity, filter PN, service interval.
Torque Specifications
Lug nuts, drain plug, caliper, axle nut, plug, key fasteners.
Brake Pad & Rotor Specs
Pad PNs, rotor size, min thickness, caliper torque.
Tire Size & Pressure
OEM size, cold psi, bolt pattern, wheel size, TPMS.
A/C Refrigerant & Oil
R-134a or R-1234yf, charge oz, PAG oil spec.
Bulb Sizes (Headlight, Tail, Fog)
Headlight, fog, tail, turn, reverse, interior.
Factory Maintenance Schedule
Service intervals by mileage, severe-duty notes, known issues.
Towing Capacity & Payload
Max tow, payload, GVWR/GCWR, hitch class by trim.
Fuse Box Diagram & Amperage
Fuse box locations, layout, amps, and what each fuse controls.
Serpentine Belt Routing & Length
Belt routing, length, rib count, OEM + aftermarket PNs.
Wheel Alignment Specifications
Camber, caster, toe ranges (front & rear), adjustability notes.
Paint Color Codes
All factory colors with paint codes, sticker location, touch-up tips.
Wiper Blade Sizes
Driver/passenger/rear blade size, attachment, OEM + cross-refs.
Spark Plug Type & Gap
Plug PN, gap, torque, interval by engine.
Transmission & Axle Gear Ratios
Trans gear ratios, axle ratios, RPO codes, tow vs MPG impact.
Key Fob Programming
DIY programming steps, FCC ID, fob PN, battery, transponder.
Same spec — other model years
Maintenance & repair guides
2020 Tesla Model X Maintenance Schedule →
Available maintenance guidance; confirm the manufacturer schedule.
Repair planning references →
Plan the scope of work; detailed procedures need configuration-matched evidence.
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