Mobile van jumpstart · Battery keeps going flat
Repeat Flat Batteries — Canley van jumpstart & Diagnosis
New battery still going flat in Canley? That is a parasitic drain or charging fault, not a bad battery. Drain testing plus van jumpstart on-site.
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.
Van won't turn over in Canley? 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.
Warwick University edge district in south-west Coventry. — that means a mix of tight residential streets and industrial estates, and we're set up to work in both without needing a low-loader.
Drain faults found nearby
Recent job nearby: a car in Canley 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.
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.
Usage patterns that flatten good batteries
We see this pattern often with cars used for short journeys around Canley — 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 Canley and Coventry, with access via M6 J2/J3 and M69 and a practical radius reaching Coventry (~3 mi) and Nuneaton (~9 mi).
Repeat flat battery questions
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 Canley and the CV4 area for this?
Yes. Canley is inside our routine coverage from Oldbury via M6 J2/J3, roughly 3 miles from Coventry. We cover it alongside Coventry and the surrounding streets.
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.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.
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.
Stop buying batteries. Find the drain.
Proper quiescent current testing in Canley, with the offending circuit identified rather than guessed. Van Jumpstart covers 1950s estates and student HMOs and trade vehicles alike, all from the same van.
Local reference data — Canley
- Page focus
- Battery keeps going flat
- Local authority
- Coventry City Council
- Typical property
- 1950s estates and student HMOs
- County
- West Midlands
- Local commercial context
- automotive R&D and higher education
- Nearest major town
- Coventry (~3 miles)
How the visit runs
- 1
Phone diagnosis
Van make, model, engine size and symptom — we already know if it's a battery, alternator or starter pattern.
- 2
How a drain is actually traced
Circuits are isolated fuse by fuse to locate the offending module rather than guessing at the usual suspects.
- 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.
Where we test
Canley sits about 3 miles from Coventry, and the same van covers Coventry (~3 mi), Nuneaton (~9 mi) and Bedworth (~5 mi) on the same run.
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 CV4.
Related pages
- Fleet & Business Jumpstart — battery keeps going flat in Canley
- 24/7 Emergency Jumpstart — battery keeps going flat in Canley
- Roadside emergency — van jumpstart in Canley
- Night and early hours — van jumpstart in Canley
- Stranded in a car park — van jumpstart in Canley
- Battery keeps going flat in Coventry (~3 mi)
- Battery keeps going flat in Nuneaton (~9 mi)
- Battery keeps going flat in Bedworth (~5 mi)
- Battery keeps going flat across Coventry
- Van Jumpstart in Canley — main page
- All jumpstart services in Canley
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 Canley 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.