Battery Testing & Replacement in Folsom, CA

If your car is slow to start, your lights seem dim, or your battery warning light is on, we can diagnose the problem fast and give you a straight answer on whether you need a replacement.

Why Choose Our Battery Service

Same-Day Service Full Charging System Test 3-Year / 36K-Mile Warranty

A dead battery can leave you stranded without much warning. We perform a full battery and charging system test to tell you exactly what's going on before we do any work. If your battery needs replacing, we install one that meets the specs for your specific vehicle, whether that's a standard lead-acid unit for a Civic or an AGM battery for a Lexus ES or Toyota Highlander Hybrid.


Signs You Need a Battery Test or Replacement

  • Slow or sluggish engine crank. If your engine turns over slowly before starting, especially on cold mornings, your battery may no longer hold a charge.
  • Battery warning light on your dashboard. This light indicates a problem with the battery or charging system and should be diagnosed promptly.
  • Electrical accessories behaving oddly. Flickering interior lights, a slow power window, or a radio that resets can point to a battery that's dropping voltage under load.
  • Battery age of 3 to 5 years or more. Most batteries last 3-5 years in the Sacramento area climate. Heat accelerates wear, so older batteries should be tested annually.
  • Car won't start after sitting overnight. If your vehicle starts fine after a jump but fails the next morning, the battery is likely no longer holding a charge between uses.
  • Swollen or corroded battery case. Visible swelling or heavy corrosion around the terminals is a sign the battery has been overcharged or is past its service life.

Our Battery Service Process

1. Load Test the Battery

We test your battery under load to measure its actual output, not just its resting voltage. A battery can read 12.6 volts at rest and still fail under the demands of starting your engine.

2. Test the Charging System

A bad alternator will drain even a new battery. We check your alternator output and serpentine belt condition so you're not back in the shop in two weeks with the same problem.

3. Inspect Battery Terminals and Cables

Corroded terminals and frayed cables are common on vehicles over 5 years old. We clean the connections and flag any cable issues before they cause a failure.

4. Recommend and Install the Right Battery

We match the battery to your vehicle's factory specs. For hybrid models like the Toyota RAV4 Hybrid or Honda Accord Hybrid, we confirm which battery system is involved and whether the 12V auxiliary battery is the source of the issue.

5. Reset Vehicle Systems if Needed

Some Honda and Acura models require a throttle relearn or power window reset after battery replacement. We handle these resets as part of the service so your vehicle behaves normally when you leave.

Battery testing and replacement service at Shannon Family Automotive

Why Choose Shannon Family Automotive

ASE-Certified Technicians Who Know Your Vehicle

Our technicians are ASE-certified and work on Toyota, Honda, Lexus, and Acura vehicles every day. We know the quirks of these models, from Honda's battery registration requirements to the dual-battery setup in some Toyota hybrids.

3-Year, 36,000-Mile Warranty on Parts and Labor

Every battery we install is covered by a 3-year, 36,000-mile warranty. If there's a problem within that window, we make it right at no additional cost to you.

We Tell You What You Need, Not What's Easy to Sell

If your battery tests fine and the problem is your alternator or a parasitic drain, we'll tell you that. We don't replace parts that don't need replacing.

Serving Folsom and Surrounding Communities

We serve Toyota and Honda owners throughout Folsom, El Dorado Hills, Rancho Cordova, and Gold River. Most battery replacements are completed the same day, often within an hour.

Why Families Trust Shannon Family Automotive

Because we deliver dealership-quality service with the transparency, care, and fair pricing you deserve.

Honda & Toyota Specialists

ASE-certified technicians who specialize in Honda and Toyota vehicles. We know these cars inside and out - from routine maintenance to complex repairs.

Transparent Pricing, No Surprises

Clear estimates upfront, detailed explanations of what needs fixing, and your approval before any work begins. No hidden fees, ever.

Industry-Leading 3-Year/36,000-Mile Warranty

Most repairs backed by our comprehensive warranty on parts and labor. We stand behind our work, period.

Shannon Family Automotive Crew

The Quality You Expect. The Service You Remember.

At Shannon Family Automotive, we believe in doing things right. That means exceptional work on every vehicle, honest information so you can make informed decisions, and service that keeps you coming back.

  • Family-owned and operated since 2011.
  • ASE-certified technicians you can trust.
  • Flexible scheduling that works for you.

Our Philosophy

Three simple beliefs we never compromise on

Integrity First

Honest assessments, transparent pricing, no pressure. We've built our reputation on doing what's right, not what's profitable.

Relentless Excellence

Expert technicians using quality OEM or equivalent parts on every repair. We take pride in our workmanship and stand behind every job we complete.

Family Dedication

Our customers return because we genuinely care - not just about keeping your car running, but about treating you fairly and earning your trust with every visit.

What Our Customers Say

Real reviews from local drivers

Rated 5 out of 5 stars

“Honest and fast! They explained everything clearly and my Honda runs like new.”

— Alex P. • Google Reviews

Rated 5 out of 5 stars

“Finally found a shop I trust. Fair pricing and great communication.”

— Mia K. • Google Reviews

Rated 5 out of 5 stars

“They know hybrids! My Prius service was quick and thorough.”

— Jordan R. • Google Reviews

Ready for Honest Auto Care?

Don't wait for a warning light. Schedule your service today!

Book Your Appointment

Frequently Asked Questions

Battery replacement at our Folsom shop runs $180-$320 depending on your vehicle's battery type, group size, and whether it requires an AGM unit. Hybrid auxiliary batteries fall in the same range. Call us for an exact quote for your specific vehicle.

Most battery replacements take 45 minutes to 1 hour. If we find a more involved issue, like a failing alternator or a parasitic drain, we'll let you know before proceeding with additional work.

An AGM (Absorbent Glass Mat) battery is required on many newer Lexus and Honda models, as well as vehicles with start-stop systems. It handles repeated discharge cycles better than a standard flooded battery. Installing the wrong type can shorten the battery's life and cause charging system issues.

Yes, especially if the battery is 3 or more years old. Batteries often fail suddenly without warning once they start to go. A load test takes a few minutes and can tell you whether the battery is near the end of its life before it leaves you stranded.

Some Honda and Acura models use battery sensor systems that should be reset or recalibrated when a new battery is installed. Skipping this step can lead to overcharging or poor fuel economy. We handle this as part of the replacement process.

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