Business account service · Battery keeps going flat
Battery Keeps Going Flat in Selly Oak? Drain Testing & Fleet & Business Jumpstart
Flat again in Selly Oak? We measure quiescent current and alternator output before selling anyone another battery. Mobile Fleet & Business Jumpstart, 24/7.
Buying a second battery for the same car in a year is the clearest sign the first one was never the problem. Something is either draining charge while the car sleeps, or failing to put it back while the car runs.
If your yard in Selly Oak sees 3+ battery failures a year, you don't need a garage — you need a mobile partner who prices per job on account and turns up before your morning drops leave.
Account customers get priority slots ahead of retail callouts, so a fleet job on your yard in Selly Oak won't sit behind three domestic driveway jobs.
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.
- Vehicle register held on file — one call gives us the reg, spec, battery history and yard location
- Fleet & Business Jumpstart work here is judged against the vehicle's own specification rather than a generic pass mark.
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).
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.
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.
Repeat flat battery questions
Q.Can you supply and fit batteries at trade price?
Yes — Yuasa, Varta, Bosch and Exide at proper trade rates for account customers, fitted on your yard with OBD coding included.
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.Do you do preventative fleet audits?
Yes — quarterly on-site checks: voltage, load test, alternator output, terminal condition on every vehicle. Reports emailed to your fleet manager.
How the visit runs
- 1
Onboard the fleet
One call, one fleet list, account live the same day for first callouts.
- 2
How a drain is actually traced
Quiescent draw is measured after the vehicle's modules have gone to sleep, which can take 20–40 minutes — measuring too early gives a false high reading.
- 3
Driver calls in
Driver quotes the fleet reference; no card payment, no per-job admin.
- 4
Priority dispatch
Account jobs go ahead of retail callouts, typical arrival 30–45 minutes.
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.
Where we test
Selly Oak sits about 3 miles from Birmingham, and the same van covers Birmingham (~3 mi), Smethwick (~3 mi) and Sutton Coldfield (~7 mi) on the same run.
Flat again?
Third battery in two years is a diagnosis problem. We measure the draw and the charging output before anything is replaced. Same fixed pricing whether it is a fleet jumpstart at 9am or 3am, anywhere in Birmingham City Council.
Related pages
- Battery Replacement — battery keeps going flat in Selly Oak
- Car Jumpstart — battery keeps going flat in Selly Oak
- Same-hour response — fleet jumpstart in Selly Oak
- Trade van, first job of the day — fleet jumpstart in Selly Oak
- Workplace and staff parking — fleet jumpstart 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
- Fleet & Business Jumpstart in Selly Oak — main page
- All jumpstart services in Selly Oak
The short version
A battery that keeps dying is telling you about the car, not about itself. Measure the sleep draw and the charging voltage in Selly Oak and the real fault usually appears within the hour. 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.