Mobile battery replacement · Battery keeps going flat
Why Your Battery Keeps Dying — Battery Replacement, Earlsdon
Flat again in Earlsdon? We measure quiescent current and alternator output before selling anyone another battery. Mobile Battery Replacement, 24/7.
Repeat flat batteries are a diagnostic job, not a parts job. The measurement takes longer than the fix usually does.
Battery gone in Earlsdon? Rather than driving to a fitting bay and queuing, we come to the vehicle — driveway, workplace car park, or roadside on the M6 J2/J3 corridor.
Stock on the van covers every popular fitment: standard flooded 063/096/075/100, EFB start-stop, and AGM 019/017 for premium and stop-start applications.
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.
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.
- Correct chemistry every time: flooded / EFB / AGM matched to what the manufacturer specified
- On a battery replacement the equipment is matched to the vehicle — cranking current, terminal layout and battery location all change the approach.
Usage patterns that flatten good batteries
Cars left standing on Edwardian villas for a week or more between uses are the other common case in CV5.
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).
Repeat flat battery questions
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.What's the difference between AGM and EFB?
AGM is a fully sealed absorbed-glass-mat battery for premium and stop-start; EFB is an enhanced flooded battery for entry-level stop-start. Fitting the wrong one is a warranty-void job.
Q.Do I really need OBD coding when the new battery goes in?
On post-2012 BMW, Audi, VW, Ford, Vauxhall, Peugeot and Citroen — yes. Without coding, the alternator will overcharge the new battery and kill it in under a year.
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.
Local reference data — Earlsdon
- Area type
- Neighbourhood
- Local commercial context
- automotive R&D and higher education
- Main routes
- M6 J2/J3 · M69 · A45
- Service covered here
- Battery Replacement
- County
- West Midlands
- Local authority
- Coventry City Council
How the visit runs
- 1
Vehicle lookup
By reg on the phone — we confirm the exact OEM battery spec before quoting.
- 2
Fixed all-in price
Battery, fitting, coding, recycling, warranty — one number on the phone.
- 3
Driveway fit
Memory saver in, old battery out, new one in and terminals torqued to spec.
- 4
How a drain is actually traced
Circuits are isolated fuse by fuse to locate the offending module rather than guessing at the usual suspects.
Stop buying batteries. Find the drain.
Proper quiescent current testing in Earlsdon, with the offending circuit identified rather than guessed. We route in via M6 J2/J3, roughly 2 miles out from Coventry.
Where we test
Earlsdon sits about 2 miles from Coventry, and the same van covers Coventry (~2 mi), Nuneaton (~9 mi) and Bedworth (~5 mi) on the same run.
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 CV5.
Related pages
- Fleet & Business Jumpstart — battery keeps going flat in Earlsdon
- 24/7 Emergency Jumpstart — battery keeps going flat in Earlsdon
- Hybrid 12V auxiliary battery — battery replacement in Earlsdon
- Trade van, first job of the day — battery replacement in Earlsdon
- Driveway and home callout — battery replacement in Earlsdon
- Battery keeps going flat in Coventry (~2 mi)
- Battery keeps going flat in Nuneaton (~9 mi)
- Battery keeps going flat in Bedworth (~5 mi)
- Battery keeps going flat across Coventry
- Battery Replacement in Earlsdon — main page
- All jumpstart services in Earlsdon
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 Earlsdon and the real fault usually appears within the hour. Locally this is handled alongside Coventry and Nuneaton, so the van is rarely far away.
Stranded with a flat battery?
Call now or send a WhatsApp — we'll confirm your quote and dispatch the nearest engineer.