A dead battery in a 2007 Scion tC disrupts more than your schedule — it tests your patience every cold morning. Finding a replacement that delivers consistent cranking power and reserve capacity without overpaying requires looking past brand names to the actual specifications that govern real-world performance.
I’m Amir — the founder and writer behind Four Wheel Ask. I spend my time dissecting product specifications, analyzing build quality reports, and aggregating real owner feedback to identify which batteries genuinely perform over the long haul.
The right battery for your Scion needs to handle both daily commutes and extended periods of inactivity without losing its charge. After careful analysis of specs, owner feedback, and real-world performance data across multiple brands, here is the definitive best 2007 scion tc battery.
How To Choose The Best 2007 Scion Tc Battery
Selecting the right battery for your 2007 Scion tC means balancing cold cranking amps, reserve capacity, battery type, and physical fit. The Scion tC typically uses a Group 35 battery, but variations exist depending on trim and aftermarket accessories. Focus on the specs that directly affect starting reliability and long-term durability rather than brand reputation alone.
Cold Cranking Amps (CCA)
CCA measures a battery’s ability to start an engine in cold temperatures. For a 2007 Scion tC, a battery with at least 650 CCA provides reliable cold-weather starts without straining the charging system. Higher CCA ratings offer a safety margin for extreme winter conditions but do not necessarily indicate better overall battery quality.
AGM vs. Flooded Lead-Acid
AGM (Absorbent Glass Mat) batteries use fiberglass mats to hold electrolyte, making them spill-proof, vibration-resistant, and capable of faster recharging. They handle deeper discharge cycles better than flooded batteries and typically last two to three times longer. Flooded batteries cost less upfront but require periodic maintenance and are more prone to corrosion and vibration damage.
Reserve Capacity (RC)
Reserve capacity indicates how many minutes a battery can deliver a minimum voltage (usually 10.5V) at 80°F under a 25-amp load. A higher RC rating matters if you run accessories like aftermarket audio systems, lighting, or if the car sits unused for extended periods. Look for a minimum of 100 minutes of reserve capacity for dependable accessory power.
Quick Comparison
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| Model | Category | Best For | Key Spec | Amazon |
|---|---|---|---|---|
| Weize Platinum AGM Group 35 | AGM | Daily reliability | 650 CCA, 100 RC | Amazon |
| Goodyear 35-AGM | AGM | Premium performance | 650 CCA, 100 RC | Amazon |
| Interstate Batteries MTX-35 | AGM | Long service life | 650 CCA, Pure Lead | Amazon |
| OPTIMA RedTop 34 | AGM | Extreme durability | 800 CCA, SpiralCell | Amazon |
| MARXON Group 34 | AGM | Budget AGM | 650 CCA, Fast Charging | Amazon |
| Autocessking Group 35 | AGM | Temperature resistance | 650 CCA, 100 RC | Amazon |
| Relistart AGM Group 47 | AGM | Entry-level AGM | 680 CCA, 105 RC | Amazon |
In-Depth Reviews
1. Weize Platinum AGM Battery BCI Group 35
The Weize Platinum AGM Group 35 delivers a well-balanced combination of cold cranking power, reserve capacity, and build quality at a price that undercuts many premium rivals. With 650 CCA and 100 minutes of reserve capacity, it meets the starting demands of the 2007 Scion tC while providing ample headroom for aftermarket accessories. The AGM construction uses glass fiber mats to hold electrolyte, eliminating spill risks and improving vibration resistance compared to conventional flooded batteries.
Owner feedback consistently highlights the battery’s ability to hold a charge during extended periods of inactivity, a common pain point for Scion owners who may not drive daily. The 55Ah capacity paired with a low self-discharge rate (under 8% after 90 days) means fewer jump-starts and less parasitic drain frustration. The three-year warranty also exceeds the coverage offered by many competitors in this price tier.
Operating temperature range spans -22°F to 158°F, giving owners confidence in both winter cold snaps and summer heat waves. The group size 35 dimensions (9.06 x 6.89 x 8.82 inches) align closely with the factory battery specification for the tC, simplifying installation without requiring bracket modifications or terminal adapter kits.
What works
- Strong 650 CCA rating ensures reliable cold-weather starts
- Three-year warranty provides solid long-term coverage
- Low self-discharge rate preserves charge during storage
What doesn’t
- Not designed for deep-cycle solar or marine applications
- Terminal placement must be verified before purchase
2. Goodyear 35-AGM Platinum Series
The Goodyear 35-AGM brings name-brand recognition to the AGM battery segment with specifications that match the needs of a daily-driven 2007 Scion tC. Rated at 650 CCA and 100 minutes of reserve capacity, this battery provides consistent starting power across a wide temperature range. The spill-proof AGM design allows flexible mounting positions (except inverted), which helps during installation in tight engine bays.
Owner reports indicate that the battery receives a full charge prior to shipment, reducing the time between unboxing and first start. The 55Ah capacity supports stop-start technology if the vehicle is equipped, and the vibration-resistant construction helps the battery endure rough road conditions without internal damage. The 36-month warranty aligns with the top tier of coverage offered by premium battery manufacturers.
CE certification and ISO-certified factory production add a layer of quality assurance that budget-oriented batteries often lack. The physical dimensions (9.00 x 7.00 x 8.87 inches) fall within the typical Group 35 footprint, though owners should verify that the positive-on-right terminal orientation matches their Scion’s cable routing before finalizing the purchase.
What works
- Recognized brand with a strong warranty reputation
- Spill-proof AGM design allows flexible mounting
- CE certified with ISO factory production standards
What doesn’t
- Wire harness and mounting accessories sold separately
- One owner reported installation-related issues requiring vehicle repairs
3. Interstate Batteries MTX-35 AGM
The Interstate Batteries MTX-35 represents a step up in construction quality with its pure lead AGM design, which packs more lead into the battery for extended service life. Interstate claims the MTX series delivers two to three times the lifespan of conventional flooded batteries and double the life of standard alloy AGM batteries. For a 2007 Scion tC owner who plans to keep the car for several more years, this longevity directly reduces the total cost of ownership.
Absorbed glass-mat technology combined with VRLA (valve-regulated) construction eliminates spills and overpressure risks, making the battery safe for installation in passenger compartments or tight spaces. The 650 CCA rating meets the Scion’s starting requirements with margin to spare, and the pure lead chemistry supports faster recharge rates compared to standard lead-calcium alloys. The 36-month warranty matches the industry standard for premium AGM batteries.
Owner feedback notes that the battery arrived with sufficient charge for immediate installation, and several reviews mention successful use in vehicles that sat idle for months without requiring a jump. The handle integrated into the casing simplifies lifting during installation, a detail that becomes important given the 42-pound weight of this Group 35 unit.
What works
- Pure lead AGM construction for extended service life
- VRLA technology eliminates spills and overpressure
- Integrated carry handle simplifies installation
What doesn’t
- Higher upfront cost compared to standard AGM options
- One owner reported premature discharge in a rarely driven vehicle
4. OPTIMA RedTop 34
The OPTIMA RedTop 34 uses SpiralCell technology, which wraps 99.99% pure lead plates into cylindrical cells rather than stacking flat plates. This unique construction delivers 800 CCA — significantly higher than the typical Group 35 rating — and provides 15 times better vibration resistance than standard flooded batteries. For a 2007 Scion tC equipped with performance modifications or aftermarket audio, this extra cranking power ensures reliable starts even under heavy electrical load.
The RedTop 34 is physically longer than a standard Group 35 battery (10.06 inches vs. roughly 9.0 inches), which may require minor adjustments to the battery tray or hold-down bracket. Owners report that the battery fits with slight plastic under-pan trimming in some vehicles, but careful measurement before ordering is essential. The 100-minute reserve capacity supports accessory use without sacrificing starting power.
User reviews frequently mention eight-plus years of service from earlier RedTop units, though some recent owner reports indicate variability in quality control. The maintenance-free design eliminates the need for water additions, and the sealed case allows mounting in multiple orientations (excluding inverted). At 37.9 pounds, the RedTop is lighter than many Group 34 alternatives despite its higher CCA output.
What works
- Exceptional 800 CCA for cold-weather and high-demand starts
- SpiralCell design provides superior vibration resistance
- Lightweight for its power output at 37.9 pounds
What doesn’t
- Physical size may require tray modifications for proper fitment
- Recent quality control concerns reported by some users
5. MARXON Group 34 Start and Stop AGM
The MARXON Group 34 AGM battery offers a compelling value proposition for owners who want the benefits of AGM technology without paying premium-brand prices. With 650 CCA and a 55Ah capacity, this battery meets the starting requirements of a 2007 Scion tC while incorporating fast-charging capability that claims 40% faster recharge times than standard SLA batteries. The design uses patented alloy materials to improve corrosion resistance and leak-proof performance.
Owner reports spanning nearly a year of use indicate consistent starting performance and reliable charge retention. The A1 terminal configuration and dimensions (10.87 x 6.61 x 6.89 inches) match the Group 34 standard, though the longer case length compared to a Group 35 battery may require verification of available tray space in the Scion. The three-year warranty backed by a US-based office provides peace of mind for a battery in this price tier.
The start-stop compatible design saves fuel in vehicles equipped with that feature, and the maintenance-free construction eliminates the need for periodic acid or water checks. MARXON positions this battery as a direct replacement for OEM units in many Asian and European vehicles, making it a versatile option for Scion owners who also maintain other cars in the household.
What works
- Fast-charging technology reduces recharge downtime
- Three-year warranty with US-based support
- Leak-proof design with patented corrosion-resistant alloy
What doesn’t
- Group 34 case length may require fitment verification
- Less established brand compared to legacy battery manufacturers
6. Autocessking Group 35 Start and Stop AGM
The Autocessking Group 35 AGM battery targets owners who prioritize temperature resilience and long-term durability in a direct-fit Group 35 package. With 650 CCA, 100 minutes of reserve capacity, and a 55Ah rating, it matches the factory specifications required by the 2007 Scion tC. The AGM construction uses glass fiber mat separators that absorb and hold electrolyte, reducing acid leak risk while improving vibration and corrosion resistance.
Owner reviews for this battery are uniformly positive, with multiple reports confirming a perfect fit in Honda Civic vehicles (which share the same Group 35 platform) and trouble-free operation from the moment of installation. The three-year warranty provides a safety net that exceeds the coverage offered by many competitors in the mid-range price bracket. The battery arrived fully charged according to several verified purchasers, eliminating the need for a pre-installation charge.
The low self-discharge rate makes this battery suitable for vehicles that sit unused for days or weeks at a time, a common scenario for Scion owners who use the car as a secondary vehicle. The sealed design allows flexible mounting positions and eliminates the corrosion associated with flooded battery terminals. Autocessking specifies that this is a starting battery and should not be used in deep-cycle solar or marine applications.
What works
- Direct Group 35 fitment simplifies installation
- Three-year warranty provides extended coverage
- Low self-discharge suits intermittent driving patterns
What doesn’t
- Not suitable for deep-cycle or marine applications
- Relatively new brand with limited long-term owner data
7. Relistart AGM Group 47
The Relistart AGM Group 47 battery enters the market with specifications that rival more expensive alternatives: 680 CCA, 105 minutes of reserve capacity, and 60Ah capacity. For a 2007 Scion tC owner who needs strong starting power and extended reserve capacity for electronics, these numbers represent a genuine performance advantage over typical mid-range batteries. The AGM construction delivers four times the cycle life of conventional flooded batteries according to the manufacturer.
Owner feedback frequently mentions that the battery arrived fully charged and ready for immediate installation, with several users noting improved starting performance compared to their previous battery. The tapered terminal configuration (left negative, right positive) matches the standard orientation found in many Japanese vehicles, though the Group 47 case dimensions differ from the typical Group 35 size used in the Scion tC. Careful measurement of the battery tray is essential before purchase.
The operating temperature range of -22°F to 158°F covers extreme conditions on both ends of the thermometer, and the self-discharge rate of under 8% after 90 days means the battery holds its charge well during storage periods. The two-year warranty is shorter than some competitors offer, but the lower entry price helps offset that limitation for budget-conscious buyers.
What works
- High 680 CCA with 105-minute reserve capacity
- Four times the cycle life of standard flooded batteries
- Low self-discharge rate under 8% after 90 days
What doesn’t
- Group 47 case requires fitment verification for Scion tC
- Two-year warranty is shorter than some AGM competitors
Hardware & Specs Guide
Cold Cranking Amps (CCA)
CCA measures a battery’s ability to deliver current (in amps) at 0°F for 30 seconds while maintaining at least 7.2 volts. For the 2007 Scion tC, a CCA rating of 600 to 650 is the factory baseline, but upgrading to 650 to 800 CCA provides a meaningful safety margin in colder climates. Higher CCA values do not harm the vehicle’s electrical system — the starter draws only the current it needs, and the extra capacity simply ensures reliable engagement in extreme cold.
Reserve Capacity (RC)
Reserve capacity indicates how many minutes a battery can supply 25 amps at 80°F before voltage drops below 10.5 volts. A rating of 100 minutes means the battery can power essential electrical loads for over an hour and a half if the alternator fails. For Scion tC owners with aftermarket audio, lighting, or accessory inverters, a reserve capacity of 100 minutes or higher provides a meaningful buffer against unexpected discharge situations.
AGM vs. Flooded Battery Technology
AGM (Absorbent Glass Mat) batteries suspend electrolyte in fiberglass mats rather than allowing it to flow freely between plates. This design eliminates acid spills, reduces internal resistance for faster charging, and improves vibration resistance by physically immobilizing the electrolyte. Flooded batteries remain the budget-friendly option but require periodic water checks, produce more terminal corrosion, and typically last only three to five years compared to the five to eight year lifespan of a quality AGM unit.
Group Size and Physical Fitment
BCI Group Size defines the physical dimensions, terminal location, and polarity of a battery. The 2007 Scion tC uses a Group 35 battery measuring approximately 9.06 x 6.89 x 8.82 inches with left-negative, right-positive terminal orientation. Installing a different group size (such as Group 34 or Group 47) requires verifying that the tray can accommodate the different length, width, and height, and that the terminal cables reach without stretching or bending the wires.
FAQ
What battery group size does a 2007 Scion tC use?
How many cold cranking amps do I need for a Scion tC?
Can I use an AGM battery in my 2007 Scion tC?
How long should a battery last in a 2007 Scion tC?
Do I need to register a new battery in my Scion tC?
Final Thoughts: The Verdict
For most buyers, the best 2007 scion tc battery winner is the Weize Platinum AGM Group 35 because it delivers the optimal balance of cold cranking power, reserve capacity, build quality, and warranty coverage at a price that respects your budget. If you want a name-brand premium option with proven long-term reliability, grab the Goodyear 35-AGM. And for maximum vibration resistance and the highest CCA output available, nothing beats the OPTIMA RedTop 34.
Certification: BSc in Mechanical Engineering
Education: Mechanical engineer
Lives In: 539 W Commerce St, Dallas, TX 75208, USA
Md Amir is an auto mechanic student and writer with over half a decade of experience in the automotive field. He has worked with top automotive brands such as Lexus, Quantum, and also owns two automotive blogs autocarneed.com and taxiwiz.com.