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Mobile van jumpstart · Battery keeps going flat

Why Your Battery Keeps Dying — Van Jumpstart, Earlsdon

New battery still going flat in Earlsdon? That is a parasitic drain or charging fault, not a bad battery. Drain testing plus van jumpstart on-site.

Repeat flat batteries are a diagnostic job, not a parts job. The measurement takes longer than the fix usually does.

Van won't turn over in Earlsdon? Nine times out of ten it isn't the starter — it's a tired leisure or main battery that can't hold cranking amps on a cold morning. We come out with a heavy-duty booster rated for diesel commercials.

Around Earlsdon the common jobs are morning no-starts on the yard, lunch-break dead batteries at customer sites, and end-of-day flatlines after tail-lift or refrigeration use.

Local reference data — Earlsdon

Reference point
Village-feel south-west Coventry suburb with a strong high street.
Local authority
Coventry City Council
Postcode districts
CV5
Local commercial context
automotive R&D and higher education
Main routes
M6 J2/J3 · M69 · A45
Service covered here
Van Jumpstart

Usage patterns that flatten good batteries

We see this pattern often with cars used for short journeys around Earlsdon — a 10-minute trip never replaces the charge that starting consumed, so the battery slowly sinks regardless of health.

Locally that means the streets between Earlsdon and Coventry, with access via M6 J2/J3 and M69 and a practical radius reaching Coventry (~2 mi) and Nuneaton (~9 mi).

How a drain is actually traced

  • Circuits are isolated fuse by fuse to locate the offending module rather than guessing at the usual suspects.
  • 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.
  • AGM and EFB stop-start vans handled correctly — no fitting a standard flooded battery in an AGM slot
  • Every van jumpstart finishes with a charging-system reading, so the same fault does not reappear next week.

How the visit runs

  1. 1

    Phone diagnosis

    Van make, model, engine size and symptom — we already know if it's a battery, alternator or starter pattern.

  2. 2

    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.

  3. 3

    Fixed quote

    Price agreed before we set off. Includes callout, jumpstart and full electrical health check.

  4. 4

    On-site test

    Voltage, load, alternator output at 2000 rpm, parasitic draw. Real numbers, not guesses.

Who this page is for

Low-mileage drivers whose cars sit for days between short journeys.

Domestically, Edwardian villas and converted flats dominate around here, which shapes how these jobs are accessed and worked.

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.
  • Old batteries removed and recycled on every van jumpstart.

Drain faults found nearby

Recent job nearby: a car in Earlsdon 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 J2/J3 flattening weekly. Alternator produced 13.1V under load — replaced the charging fault, kept the original battery.

Stop buying batteries. Find the drain.

Proper quiescent current testing in Earlsdon, with the offending circuit identified rather than guessed. Van Jumpstart covers Edwardian villas and converted flats and trade vehicles alike, all from the same van.

Where we test

Working out from CV5, the practical radius for a van jumpstart takes in Coventry, Nuneaton, Bedworth and Rugby — all within a few minutes of M6 J2/J3.

Repeat flat battery questions

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 Earlsdon and the CV5 area for this?

Yes. Earlsdon is inside our routine coverage from Oldbury via M6 J2/J3, roughly 2 miles from Coventry. We cover it alongside Coventry and the surrounding streets.

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.What if the van battery keeps going flat every week?

That's parasitic drain — usually a dashcam, tracker or aftermarket electrics wired to permanent live. We do a milliamp draw test and identify the circuit.

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.

Related pages

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. For van jumpstart specifically, that means battery voltage and cold-cranking amps measured with a proper midtronics-style tester, not a cheap voltmeter

Stranded with a flat battery?

Call now or send a WhatsApp — we'll confirm your quote and dispatch the nearest engineer.

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