Roadside assistance
Mobile battery replacement in the driveway or the office lot
The short answer
Mobile battery replacement fits a new battery where the car already sits, once the charging system has been tested to confirm the battery is what failed. The right group size goes in, an absorbent glass mat battery if the car has stop-start, and the old one leaves with the technician as a core.
When the battery is the thing to replace
It needed a jump, and would not start again the next day
A battery that takes a charge and loses it overnight is finished, whatever it did when the pack was connected. A second jump start moves the car; it does not change what happens the following morning.
The crank has been getting slower for weeks
A starter that turns over lazily, headlights that dim while it cranks, and a car that fires up fine once running are the classic signs of a battery near the end. The first cold morning is usually when it stops being a warning.
A shop or a parts counter already tested it and it failed
If you have a printed test result saying the battery is bad, you do not need the diagnosis repeated. Say so when you call, give the make and model, and the visit is a fitting rather than an investigation.
You would rather not drive it anywhere on that battery
The car sits in a driveway, a company lot or a parking garage, and the last thing you want is to find out where it stops. Having the battery come to the car is the whole point of this call: nothing has to start for it to happen.
What the visit involves
Tell dispatch exactly what the car is
Make, model, engine, and whether it has stop-start — the system that shuts the engine off at a red light. That decides which battery is loaded on the van. Say where the car is parked, too, and whether the technician can get a vehicle alongside it.The charging system is tested before a battery is sold
The battery is load-tested and the alternator is checked with the engine running. A battery fitted to a car that is not charging fails again in days, so if the fault is the alternator or a parasitic draw, you are told that instead of being sold a battery that will not fix it.The right battery goes in where the car sits
Group size sets the physical fit and which terminal is which. A car built with an absorbent glass mat (AGM) battery gets AGM again, because a cheaper flooded battery will not survive the charging profile. Some vehicles also need the new battery registered with the charging system.The old battery leaves as a core
The technician takes it away, which is how the lead gets back into the recycling stream and why you are not left with one in the garage. The core is credited against what you pay, and the invoice should show the battery, the core and the visit as separate lines.
Upfront pricing
What a mobile battery replacement costs
The visit is a service call and the battery is quoted separately, for the group size and type your vehicle takes, before anything is fitted. We do not publish a range for the battery itself: it moves with the group size, the chemistry and the warranty behind it, and no source we would stand behind publishes a national one. The rows below are the two visits either side of that decision, and both are indicative ranges rather than quotes.
| Service | Typical range | What is included |
|---|---|---|
| Jump start, when the car has to move before you decide | $50 – $120per visit | Gets the engine running and load-tests the battery, which is the test the replacement decision rests on. |
| Tow to a shop, up to ten miles | $75 – $125per call | Where the charging system rather than the battery is at fault, or the car needs a diagnosis a roadside visit cannot do. |
Estimates only. Final price confirmed by the local operator before dispatch.
What moves this price
- The group size and terminal layout your car takes. It is a physical fit set by the vehicle, not a preference, and it is the largest part of what a battery costs.
- The chemistry. A car with stop-start needs an AGM battery, which costs more than the flooded battery an older car is happy with.
- Where the battery lives. Under a seat, in the trunk, behind a fender liner or under a cowl panel is more work than one sitting on top of the engine bay.
- The core. The old battery goes back with the technician and is credited against the price, so ask for it as a line rather than a discount.
- The hour and the day. Nights, weekends and holidays carry the operator’s after-hours rate.
Where these ranges come from
- TowingServiceHub — Roadside assistance cost guideChecked August 30, 2026
- LatestCost — Average Cost of Roadside AssistanceChecked August 30, 2026
Replaced where the car sits, or driven to a shop?
| What matters | Mobile replacement | Shop or parts counter |
|---|---|---|
| What has to happen first | Nothing. The car stays where it is | The car has to start and get there, or be towed |
| What gets tested | The battery and the charging system, before a battery is sold | Usually the same, if you ask for the charging check as well |
| What you pay for | The service call and the battery, with the core credited back | The battery, plus whatever fitting is charged on top |
| Where it goes wrong | A vehicle that needs the battery coded, which not every van is equipped for | Driving a failing battery across town and stopping somewhere worse |
While the car still starts reliably and a shop is close, either route works and the shop is usually cheaper. Once it needs a jump to move at all, bringing the battery to the car wins: a tow costs more than the visit, and a car that dies in a parking lot on the way costs you both.
Frequently asked questions
How do I know it is the battery and not the alternator?
The pattern is the clue, and the test settles it. A battery that has died usually leaves you unable to start after the car has been sitting. An alternator that has quit tends to strand you while driving, often with the battery warning light on and the headlights fading. A technician load-tests the battery and checks charging voltage with the engine running, which separates the two on the spot.
How long should a car battery last?
Long enough that age alone is a poor guide. Heat wears a battery out faster than cold does, even though cold is when a weak one finally refuses, and short trips that never fully recharge it shorten the life further. Ask for the load test result rather than guessing from the date sticker.
Does my car need an AGM battery, or will a cheaper one do?
If the car was built with one, it needs one. Vehicles with stop-start systems, regenerative braking or a heavy electrical load charge in a way a conventional flooded battery is not built to survive, and fitting the cheaper type buys you a second replacement rather than a saving. The technician matches what the vehicle specifies, and can tell you which yours takes before anyone is dispatched.
Does a new battery have to be registered to the car?
On many European models and a growing number of others, yes. The charging system tracks the age and state of the battery it thinks is fitted, and unless it is told a new one has gone in it keeps using the old charging profile, which shortens the life of the new battery. Give the make and model when you call so the operator sends a technician with the tool for it.
What is a core charge?
It is a deposit on the old battery, and you get it back by handing the old one over. Lead-acid batteries are worth money as scrap and are recycled almost entirely, which is why every seller wants the old one returned. When the technician replaces the battery at your car, the old one leaves in the van and the core is credited on the invoice rather than chased later.
Will I lose my radio presets and settings?
Some of them, on some cars. Disconnecting power can clear presets and clock settings, and a few vehicles then want the power windows, the sunroof or the idle relearned before they behave normally. Technicians usually connect a memory saver to hold the settings while the battery is out. If your car has a security-coded radio, find the code before the visit rather than after.
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Tell us what you need
Describe the job once. We match it to a vetted, licensed local operator and come back with an estimate. Nothing is dispatched until you agree the price.
Estimates only. The local operator confirms the final price before dispatch.