Free Battery & Charging Test
FREEtest
- Battery load and health test
- Charging system output checked
- Straight answer, no guessing
Battery & Electrical
Slow to Start This Morning?
We’ll Test It for Free.
Batteries, starters, alternators and electrical diagnosis, on any make. Michigan mornings find every weak battery in the county — better to know before you’re the one stranded.
Free Battery & Charging System Test.
No purchase necessary. No appointment required.
Do You Need This?
Battery, Starter, or Alternator?
These three get confused constantly, and telling them apart is exactly what a free test is for.
Slow or no crank on cold mornings
Dash lights flickering or dimming
A battery or charging warning light
Needing a jump start more than once
Corrosion visible on the battery terminals
Electrical accessories acting up — windows, radio, locks
Your Options
Your Options
Battery Replacement
- Correct battery for your make and model
- Terminals cleaned and inspected
- Old battery recycled
Starter & Alternator Repair
- Starter and alternator diagnosis and replacement
- Charging system verified after repair
- Written estimate before anything is replaced
I’m Not Sure What I Need
FREEinspection
- We test the system and look
- We show you what we find
- You decide from there
What to Expect
What Happens When You Bring It In
You describe what it’s doing
A slow crank, a dead morning, a flickering dash. You don’t need the part name.
We test it and show you
Battery load test and charging system output, free, no appointment needed.
You get a written estimate
Parts, labor, shop supplies and disposal fees, itemized, before we start.
We call before we exceed it
If deeper electrical work turns up, work stops and we call. You decide.
Why Here
Factory Training Isn’t a Fence.
It’s Where We Start.
Electrical issues are the most commonly misdiagnosed category in the business, and the free test is what keeps you from paying to replace the wrong part.
A written estimate before we touch anything
Michigan law requires it above $50. We’d do it anyway. If a repair is going to run past the estimate, we call you first — every time.
Your warranty stays intact
Federal law protects your right to service your vehicle wherever you want. We’re not going to tell you otherwise. We’d just rather earn it.
Dealers usually cost less, not more
Cox Automotive’s 2025 study put the average dealership repair at $261 against $275 at general repair shops. Kelley Blue Book calls the opposite belief perception bias rather than reality.
Symptoms We See
Sound Familiar? Read More About It.
Where We Work
What Areas Does Lasco Auto Repair & Tire Serve for Battery & Electrical Repair?
We’re on Ali Drive off S Saginaw, minutes from I-75 and Hill Road, and the first real cold snap of the year finds every weak battery in this area at once. Most battery and electrical customers come from Grand Blanc and Grand Blanc Township, including the 48507 side of the Saginaw and Hill corridor, plus Burton, Davison and Swartz Creek.
Grand Blanc 48439
Grand Blanc Twp
Flint 48507
Burton 48509
Davison 48423
Swartz Creek 48473
Questions
Straight Answers
How do I know if it’s the battery or the alternator?
A battery that’s failing tends to struggle most on the first cold start of the day; an alternator problem tends to show up as accessories fading while you’re driving, or a battery that keeps dying even after a replacement. A free load and charging test tells the difference in minutes.
Do you test batteries for free?
Yes, load test and charging system check, no purchase necessary and no appointment required.
Can corrosion on my terminals actually cause starting problems?
Yes — corrosion increases resistance at the connection, which can mimic a weak battery even when the battery itself is fine. It’s one of the first things we check.
Will electrical work here affect my factory warranty?
No. Federal law protects your right to have your vehicle serviced wherever you choose without losing your factory warranty.
Get Your Free Battery Test.
Takes about a minute online, or call and talk to a person.
Related Services
Check Engine & Diagnostics
Some charging system faults set a check-engine code too — the scan is free.
Diagnostics →Oil Change & Filters
We check your battery at every oil change as part of the free multi-point inspection.
Oil change →A/C Repair
A weak charging system can affect A/C compressor performance on some vehicles.
A/C repair →
Also From the Lasco Family
Shopping for a Vehicle, Not a Repair?
Two Lasco stores, both a short drive away.
Grand Blanc Mitsubishi
New Mitsubishi and used vehicles of every make, right here at 5470 Ali Drive.
Browse InventoryLasco Ford — Fenton
New Ford trucks and SUVs, 35+ years in business, two-time Ford President’s Award winner.
Visit Lasco Ford