A battery that tested fine at the store still left you in the driveway.
We come out with a load tester, a clean set of terminals and batteries for cars, pickups, trucks and equipment. Half the calls we take turn out to be corrosion or a loose ground, and we will tell you that instead of selling you a part you did not need.
- Open 24 hours, seven days
- No hourly minimum
- Testing before we sell anything
- Cars, trucks, trailers and equipment
Salt air eats terminals, and people pay for it in batteries
Vallejo, Benicia and the whole run along the Carquinez Strait sit in marine air. That air carries salt, salt loves the lead posts on a battery, and within a couple of years a perfectly healthy battery can be sitting behind half an inch of green and white crust that no longer passes current. The car does exactly what a dead battery does: nothing, or one sad click, or a dashboard that lights up then browns out.
So the first tool that comes out of the truck is not a wrench. It is a tester. We check resting voltage, then load the battery and watch what it does under strain, then check what the charging system is putting back in while the engine runs. That takes a few minutes and it decides whether you are buying a battery or paying for twenty minutes of cleaning and a new set of clamps.
What it usually turns out to beCorroded posts, a loose or rusted ground strap, a battery past its service life, a parasitic draw pulling it flat overnight, or a charging system that has quietly stopped charging.
What you payYou hear what the job runs before we touch anything, and a short visit is billed as a short visit because there is no minimum to clear.
Where we runNapa and Solano, the I-80 and Highway 37 corridors, and out to Sonoma, Marin and Contra Costa when it makes sense. See the map.
Why a two year old battery dies in November
Cold thickens the oil, so the starter has to work harder at the exact moment the battery has less to give. A battery at forty degrees has meaningfully less cranking power than the same battery on a warm afternoon. That is why the first cold snap of the year fills our phone with no-start calls from cars that seemed perfectly happy in September.
The other half of it is how people drive here. A commute from American Canyon down to the ferry, or a run to the store and back, is not long enough for the alternator to put back what starting the engine took out. Add a dash camera, a remote start module or an aftermarket stereo drawing current while the car sleeps, and the battery spends months slowly going flat without ever being fully dead. Then one morning it is.
A draw test finds that. We pull the fuses one at a time with a meter in the circuit and watch for the one that drops the current, which tells us what is awake that should be asleep. Replacing the battery without doing that just buys the same problem a new start date.

Everything the truck handles around the battery
These overlap constantly. A battery that keeps dying is a charging fault or a draw far more often than it is a bad battery, and telling the difference is most of the work.
No-start diagnostics
When the tester says the battery is healthy and the engine still will not start, this is where the call goes next.
Alternator replacement
A charging system that has quit will flatten a brand new battery in a day or two. Tested before anything gets replaced.
Jump start service
Sometimes you just need the engine running to get home. We can jump it, test it on the spot and tell you what comes next.
Battery terminal repair
New clamps, cleaned posts, repaired cable ends and a ground strap that actually grounds. Often the entire fix.
Mobile brake repair
While we are at the vehicle, pads, rotors, calipers and fluid are all work we can finish in the same visit.
Fleet inspections
Battery age, voltage and terminal condition recorded across a yard, so replacements get scheduled instead of towed.

Heavy batteries are a different animal
A Class 8 tractor carries two, three or four batteries wired together, each one heavy enough that pulling it out of a side box by yourself is how backs get hurt. Equipment is the same story with worse access. And on those machines, the cable between the batteries fails far more often than the batteries themselves, because vibration works the crimps loose and then the connection heats up until the insulation goes dark.
We carry the right group sizes for common trucks and we carry cable, lugs and a crimper, so a corroded cable end gets replaced properly instead of getting a hose clamp and a prayer. If a unit is sitting at a shipper, a weigh station or in your own yard, we can get it turning over there rather than have it dragged to a truck shop.
For yards running a handful of units, recording battery age and voltage at a regular visit is the cheapest thing on this page. A battery replaced on a Tuesday morning in the yard is an inconvenience. The same battery failing at a receiver two hours away is a missed appointment, a driver on the clock and a service call. Have a look at the kind of work we turn up for.
How a battery call actually runs
Most of these finish in one visit. The order matters, because skipping the testing is how someone ends up buying two batteries in three months.
- You describe what happenedNothing at all, one click, slow cranking, or the car started fine yesterday and is dead today. Each of those points somewhere different.
- The number, before we rollYou are told what the visit and the likely work will run while you are still on the phone, and if the test changes the picture we tell you before we do anything else.
- Test at the vehicleResting voltage, a load test, and a look at what the charging system is putting out with the engine running. Terminals and grounds get inspected at the same time.
- The fixClean and retighten, replace clamps or cable ends, or fit a new battery in the correct group size with the right hold down. Old unit goes with us for recycling.
- Prove it before we leaveEngine started, charging voltage checked at idle and at speed, and a draw check if the battery went flat overnight for no obvious reason.
Was at the weigh station and he was there in 20 minutes.
Silent Boy, Google review
What people ask when the car will not turn over
If yours is not covered here, calling gets you an answer faster than typing. Somebody picks up.
How do I know it is the battery and not something else?
You often cannot from the driver’s seat, which is the whole reason we test before we sell. A battery fault, a corroded terminal, a bad ground and a failed alternator can all produce the same silence when you turn the key. Five minutes with a load tester and a meter separates them, and that testing happens before we quote you a part.
Do you carry batteries on the truck or do I buy one first?
We carry them. Common automotive group sizes and heavy truck batteries ride with us, so most calls finish in one visit. Unusual sizes, AGM units for vehicles with stop start systems and some European fitments get sourced first and fitted on a scheduled return.
My battery keeps going flat overnight. Is a new one going to fix it?
Probably not on its own. Something is drawing current while the vehicle sleeps, or the charging system is not replacing what starting takes out. We put a meter in the circuit and pull fuses until the draw disappears, which tells us what is staying awake. Replacing the battery without finding that gets you the same dead car later.
Can you replace a battery on a semi or a piece of equipment?
Yes. Multi battery setups on tractors, box trucks and equipment are regular work for us, including the cables and lugs that tie them together. We come to the yard, the shipper or the weigh station, because moving a machine that will not start is the expensive way to solve this.
Will replacing the battery reset things in my car?
On a lot of modern vehicles, yes. Radio presets, clock, window auto up and sometimes the idle relearn can all drop out when power is disconnected. We use a memory saver where it matters and tell you what will need setting again, rather than letting you discover it on the freeway.
Is there a callout charge on top of the battery?
You get one figure that covers coming to you and doing the work, and there is no hourly minimum to clear, so a twenty minute terminal clean is billed as a twenty minute job. The business was started because the owner watched too many people get told one number and handed another.
Dead in the driveway is a today problem.
A vehicle that will not start does not get better sitting there, and a battery that is flat for long enough rarely comes back all the way. One number reaches the mechanic himself at any hour. Tell us the vehicle and what it did when you turned the key, and you will have a price and an arrival window before the call ends.
HoursMonday to Sunday, 24 hours
Based inAmerican Canyon, CA
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