Mobile battery replacement · Battery keeps going flat
Why Your Battery Keeps Dying — Battery Replacement, Selly Oak
Flat again in Selly Oak? We measure quiescent current and alternator output before selling anyone another battery. Mobile Battery Replacement, 24/7.
Repeat flat batteries are a diagnostic job, not a parts job. The measurement takes longer than the fix usually does.
Battery gone in Selly Oak? Rather than driving to a fitting bay and queuing, we come to the vehicle — driveway, workplace car park, or roadside on the A38 Bristol Road corridor.
Stock on the van covers every popular fitment: standard flooded 063/096/075/100, EFB start-stop, and AGM 019/017 for premium and stop-start applications.
How a drain is actually traced
- Charge acceptance is tested, because a sulphated battery can read 12.6V and still hold almost no usable energy.
- Alternator output is checked under electrical load with headlights, blower and heated screen on, not just at idle.
- 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.
Drain faults found nearby
Recent job nearby: a car in Selly Oak 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 A38 Bristol Road flattening weekly. Alternator produced 13.1V under load — replaced the charging fault, kept the original battery.
How the visit runs
- 1
Vehicle lookup
By reg on the phone — we confirm the exact OEM battery spec before quoting.
- 2
How a drain is actually traced
Alternator output is checked under electrical load with headlights, blower and heated screen on, not just at idle.
- 3
Fixed all-in price
Battery, fitting, coding, recycling, warranty — one number on the phone.
- 4
Driveway fit
Memory saver in, old battery out, new one in and terminals torqued to spec.
Usage patterns that flatten good batteries
Cars left standing on student HMOs for a week or more between uses are the other common case in B29.
Locally that means the streets between Selly Oak and Birmingham, with access via A38 Bristol Road and a practical radius reaching Birmingham (~3 mi) and Smethwick (~3 mi).
Where we test
As a neighbourhood of Birmingham, Selly Oak is covered alongside its parent town, so a battery keeps going flat call from any of them routes to the same engineer.
Who this page is for
Owners in Selly Oak on their second or third battery for the same vehicle.
Domestically, student HMOs and Victorian terraces dominate around here, which shapes how these jobs are accessed and worked.
Repeat flat battery questions
Q.What's the difference between AGM and EFB?
AGM is a fully sealed absorbed-glass-mat battery for premium and stop-start; EFB is an enhanced flooded battery for entry-level stop-start. Fitting the wrong one is a warranty-void job.
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 Selly Oak and the B29 area for this?
Yes. Selly Oak is inside our routine coverage from Oldbury via A38 Bristol Road, roughly 3 miles from Birmingham. We cover it alongside Birmingham and the surrounding streets.
Q.What do you do with my old battery?
It goes back to a licensed recycler. Around 99% of a lead-acid battery is recyclable. No landfill, and we don't charge for disposal.
Stop buying batteries. Find the drain.
Proper quiescent current testing in Selly Oak, with the offending circuit identified rather than guessed. Same fixed pricing whether it is a battery replacement at 9am or 3am, anywhere in Birmingham City Council.
Why this is safe to book
- We will not sell a battery to a car whose battery is not the fault.
- Fixed prices agreed before dispatch — no callout fee just to open the bonnet in B29.
Related pages
- Fleet & Business Jumpstart — battery keeps going flat in Selly Oak
- 24/7 Emergency Jumpstart — battery keeps going flat in Selly Oak
- New battery supply and fitting — battery replacement in Selly Oak
- Jump leads didn't work — battery replacement in Selly Oak
- Slow crank on cold mornings — battery replacement in Selly Oak
- Battery keeps going flat in Birmingham (~3 mi)
- Battery keeps going flat in Smethwick (~3 mi)
- Battery keeps going flat in Sutton Coldfield (~7 mi)
- Battery keeps going flat across Birmingham
- Battery Replacement in Selly Oak — main page
- All jumpstart services in Selly Oak
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. Locally this is handled alongside Birmingham and Smethwick, so the van is rarely far away.
Stranded with a flat battery?
Call now or send a WhatsApp — we'll confirm your quote and dispatch the nearest engineer.