Mobile battery replacement · Battery keeps going flat
Why Your Battery Keeps Dying — Battery Replacement, Solihull
New battery still going flat in Solihull? That is a parasitic drain or charging fault, not a bad battery. Drain testing plus battery replacement on-site.
Repeat flat batteries are a diagnostic job, not a parts job. The measurement takes longer than the fix usually does.
A cheap battery from a chain retailer in Solihull, fitted without OBD registration, will fail early on any car built after 2012. We fit tier-1 batteries and register them to your car properly.
The wrong battery in a stop-start car will show a warning light within days and drain itself trying to charge to spec. We fit the OEM chemistry every time.
Drain faults found nearby
Recent job nearby: a car in Solihull on its third battery in two years. Drain measured at 480mA, traced to a boot latch microswitch keeping a module awake.
Recent job nearby: a vehicle off M42 J4/J5 flattening weekly. Alternator produced 13.1V under load — replaced the charging fault, kept the original battery.
How a drain is actually traced
- Alternator output is checked under electrical load with headlights, blower and heated screen on, not just at idle.
- Circuits are isolated fuse by fuse to locate the offending module rather than guessing at the usual suspects.
- Fixed quoted price including battery, fitting, coding, recycling and warranty registration
- Every battery replacement finishes with a charging-system reading, so the same fault does not reappear next week.
Stop buying batteries. Find the drain.
Proper quiescent current testing in Solihull, with the offending circuit identified rather than guessed. Same fixed pricing whether it is a battery replacement at 9am or 3am, anywhere in Solihull Metropolitan Borough Council.
Usage patterns that flatten good batteries
Cars left standing on interwar detached houses for a week or more between uses are the other common case in B90.
Locally that means Solihull itself plus the neighbourhoods that feed into it, with access via M42 J4/J5 and A34 Stratford Road and a practical radius reaching Shirley (~2 mi) and Olton (~2 mi).
Repeat flat battery questions
Q.Will I lose my radio code and seat memory?
No — we use a 12V memory saver on the OBD port during the swap, so all adaptations and settings are preserved.
Q.Do I really need OBD coding when the new battery goes in?
On post-2012 BMW, Audi, VW, Ford, Vauxhall, Peugeot and Citroen — yes. Without coding, the alternator will overcharge the new battery and kill it in under a year.
Q.Is a parasitic drain always an electrical fault?
No. Sometimes it is an aftermarket dashcam, tracker or alarm wired to a permanent live. Those are the easy wins and we find them first.
Q.How long does drain testing take?
Allow around an hour. Most of that is waiting for the vehicle's modules to sleep — rushing it produces a meaningless number.
Q.Could short journeys alone be the cause?
Yes, and it is more common than people expect. If that is what the readings show, the fix is a conditioning charge and a change in usage, not another battery.
Q.Do you cover Solihull and the B90 area for this?
Yes. Solihull is inside our routine coverage from Oldbury via M42 J4/J5, roughly 8 miles from Birmingham. We also cover the surrounding neighbourhoods on the same run.
Who this page is for
Low-mileage drivers whose cars sit for days between short journeys.
Domestically, interwar detached houses and executive new-builds dominate around here, which shapes how these jobs are accessed and worked.
Local reference data — Solihull
- Area type
- Town / district hub
- County
- West Midlands
- Postcode districts
- B90, B91, B92, B93, B94
- Local authority
- Solihull Metropolitan Borough Council
- Page focus
- Battery keeps going flat
- Nearest major town
- Birmingham (~8 miles)
How the visit runs
- 1
Vehicle lookup
By reg on the phone — we confirm the exact OEM battery spec before quoting.
- 2
Fixed all-in price
Battery, fitting, coding, recycling, warranty — one number on the phone.
- 3
Driveway fit
Memory saver in, old battery out, new one in and terminals torqued to spec.
- 4
Register + verify
OBD coding done, warranty registered, alternator output checked before we leave.
Where we test
Solihull sits about 8 miles from Birmingham, and the same van covers Shirley (~2 mi), Olton (~2 mi) and Knowle (~4 mi) on the same run.
Related pages
- Fleet & Business Jumpstart — battery keeps going flat in Solihull
- 24/7 Emergency Jumpstart — battery keeps going flat in Solihull
- Workplace and staff parking — battery replacement in Solihull
- Motorhome and leisure vehicles — battery replacement in Solihull
- Alternator or battery? — battery replacement in Solihull
- Battery keeps going flat in Shirley (~2 mi)
- Battery keeps going flat in Olton (~2 mi)
- Battery keeps going flat in Knowle (~4 mi)
- Battery keeps going flat in Knowle
- Battery Replacement in Solihull — main page
- All jumpstart services in Solihull
The short version
Repeat failures are solved with a meter, not a parts catalogue. Find the drain, fix the cause, and the next battery lasts its full life. That is the whole job: diagnose it properly, fix it once, and explain what caused it.
Stranded with a flat battery?
Call now or send a WhatsApp — we'll confirm your quote and dispatch the nearest engineer.