Mobile van jumpstart · Battery keeps going flat
Repeat Flat Batteries — Willenhall van jumpstart & Diagnosis
Flat again in Willenhall? 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.
A dead Transit, Sprinter, Vivaro or Crafter on a WV13 driveway usually isn't a garage job. A proper mobile jumpstart with a 2000A+ pack gets you running in minutes without a recovery truck.
Diesel vans need real cranking amps — a jump pack designed for cars won't spin a 2.0 or 2.2 diesel that's been standing cold. Our kit is spec'd for commercials.
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.
- Alternator output tested at idle and at 2000 rpm before we leave, so we know the recharge will actually work
- On a van jumpstart the equipment is matched to the vehicle — cranking current, terminal layout and battery location all change the approach.
Drain faults found nearby
Recent job nearby: a car in Willenhall 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 M6 J10 flattening weekly. Alternator produced 13.1V under load — replaced the charging fault, kept the original battery.
Usage patterns that flatten good batteries
We see this pattern often with cars used for short journeys around Willenhall — a 10-minute trip never replaces the charge that starting consumed, so the battery slowly sinks regardless of health.
Locally that means Willenhall itself plus the neighbourhoods that feed into it, with access via M6 J10 and A454 and a practical radius reaching Bilston (~2 mi) and Wednesfield (~2 mi).
Where we test
Working out from WV13, the practical radius for a van jumpstart takes in Bilston, Wednesfield, Darlaston and Coseley — all within a few minutes of M6 J10.
Who this page is for
Owners in Willenhall on their second or third battery for the same vehicle.
Domestically, lockmaker-era terraces and post-war estates dominate around here, which shapes how these jobs are accessed and worked.
Local reference data — Willenhall
- Service covered here
- Van Jumpstart
- Local authority
- Walsall Metropolitan Borough Council
- Area type
- Town / district hub
- Nearest major town
- Walsall (~3 miles)
- County
- West Midlands
- Postcode districts
- WV13
Repeat flat battery questions
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 Willenhall and the WV13 area for this?
Yes. Willenhall is inside our routine coverage from Oldbury via M6 J10, roughly 3 miles from Walsall. We also cover the surrounding neighbourhoods on the same run.
Q.My van cranks slowly then dies — is that the battery?
Usually yes, but sometimes it's the starter drawing too much current or a bad earth. We test all three on the driveway before recommending a replacement.
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.
Why this is safe to book
- We will not sell a battery to a car whose battery is not the fault.
- Fully insured for work on driveways, business premises and private car parks across Walsall Metropolitan Borough Council.
Stop buying batteries. Find the drain.
Proper quiescent current testing in Willenhall, with the offending circuit identified rather than guessed. We route in via M6 J10, roughly 3 miles out from Walsall.
Related pages
- Battery Replacement — battery keeps going flat in Willenhall
- Car Jumpstart — battery keeps going flat in Willenhall
- Trade van, first job of the day — van jumpstart in Willenhall
- Keyless entry and immobiliser issues — van jumpstart in Willenhall
- Motorhome and leisure vehicles — van jumpstart in Willenhall
- Battery keeps going flat in Bilston (~2 mi)
- Battery keeps going flat in Wednesfield (~2 mi)
- Battery keeps going flat in Darlaston (~2 mi)
- Van Jumpstart in Willenhall — main page
- All jumpstart services in Willenhall
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 Willenhall 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.