Mobile van jumpstart · Battery keeps going flat
Repeat Flat Batteries — Shirley van jumpstart & Diagnosis
Flat again in Shirley? We measure quiescent current and alternator output before selling anyone another battery. Mobile Van Jumpstart, 24/7.
A healthy vehicle should draw around 20–50 milliamps once everything has gone to sleep. A faulty module, an aftermarket alarm or a stuck relay can pull ten times that, which flattens a good battery in two or three days.
If your work van is stone dead around Shirley, don't book recovery yet. Most van no-starts near the M42 J4/J5 corridor are cured with a mobile jump and a proper alternator/battery health check on the driveway.
We cover the B90 area regularly for trade customers running Ford Transits, Mercedes Sprinters, VW Transporters, Vauxhall Vivaros, Renault Trafics and Peugeot Boxers.
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.
- Charge acceptance is tested, because a sulphated battery can read 12.6V and still hold almost no usable energy.
- Battery registration/coding done on the OBD for vans that need it (Sprinter, Crafter, T6, Custom)
- Every van jumpstart finishes with a charging-system reading, so the same fault does not reappear next week.
Usage patterns that flatten good batteries
Cars left standing on 1930s semis for a week or more between uses are the other common case in B90.
Locally that means the streets between Shirley and Solihull, with access via M42 J4/J5 and A34 Stratford Road and a practical radius reaching Solihull (~2 mi) and Shirley (~2 mi).
Drain faults found nearby
Recent job nearby: a car in Shirley 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.
Local reference data — Shirley
- Main routes
- M42 J4/J5 · A34 Stratford Road · A45
- Page focus
- Battery keeps going flat
- Service covered here
- Van Jumpstart
- Reference point
- Sears Retail Park
- Area type
- Neighbourhood
- Local commercial context
- aerospace and airport services
Repeat flat battery questions
Q.Do you cover Shirley and the B90 area for this?
Yes. Shirley is inside our routine coverage from Oldbury via M42 J4/J5, roughly 2 miles from Solihull. We cover it alongside Solihull and the surrounding streets.
Q.Can you jumpstart a large diesel van?
Yes — our packs are rated for LCVs and small trucks up to around 7.5 tonnes. A booster designed for petrol cars won't do it; ours will.
Q.Can you invoice a fleet directly?
Yes — 30-day account terms and single monthly invoice for multi-vehicle operators. Just send us the fleet list.
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.
How the visit runs
- 1
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.
- 2
Phone diagnosis
Van make, model, engine size and symptom — we already know if it's a battery, alternator or starter pattern.
- 3
Fixed quote
Price agreed before we set off. Includes callout, jumpstart and full electrical health check.
- 4
On-site test
Voltage, load, alternator output at 2000 rpm, parasitic draw. Real numbers, not guesses.
Why this is safe to book
- Findings are written down with the actual current draw in milliamps, so any follow-up work starts from evidence.
- Fixed prices agreed before dispatch — no callout fee just to open the bonnet in B90.
Where we test
Working out from B90, the practical radius for a van jumpstart takes in Solihull, Shirley, Olton and Knowle — all within a few minutes of M42 J4/J5.
Flat again?
Third battery in two years is a diagnosis problem. We measure the draw and the charging output before anything is replaced. Van Jumpstart covers 1930s semis and retail-park units and trade vehicles alike, all from the same van.
Related pages
- Battery Replacement — battery keeps going flat in Shirley
- Car Jumpstart — battery keeps going flat in Shirley
- Workplace and staff parking — van jumpstart in Shirley
- Jump leads didn't work — van jumpstart in Shirley
- Keyless entry and immobiliser issues — van jumpstart in Shirley
- Battery keeps going flat in Solihull (~2 mi)
- Battery keeps going flat in Shirley (~2 mi)
- Battery keeps going flat in Olton (~2 mi)
- Battery keeps going flat across Solihull
- Van Jumpstart in Shirley — main page
- All jumpstart services in Shirley
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 Shirley and the real fault usually appears within the hour. Either way you get the readings, the reasoning and a working vehicle before we leave.
Stranded with a flat battery?
Call now or send a WhatsApp — we'll confirm your quote and dispatch the nearest engineer.