Mobile battery replacement · Battery keeps going flat
Repeat Flat Batteries — Coundon battery replacement & Diagnosis
New battery still going flat in Coundon? That is a parasitic drain or charging fault, not a bad battery. Drain testing plus battery replacement 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.
If your battery in Coundon is more than 4 years old and keeps going flat, you're past jumpstart territory — you need a proper replacement, fitted and coded on your driveway.
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.
Usage patterns that flatten good batteries
We see this pattern often with cars used for short journeys around Coundon — 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 Coundon and Coventry, with access via M6 J2/J3 and M69 and a practical radius reaching Coventry (~2 mi) and Nuneaton (~9 mi).
Who this page is for
Low-mileage drivers whose cars sit for days between short journeys.
Domestically, 1930s semis and modern estates dominate around here, which shapes how these jobs are accessed and worked.
Local reference data — Coundon
- Service covered here
- Battery Replacement
- Main routes
- M6 J2/J3 · M69 · A45
- Nearest major town
- Coventry (~2 miles)
- Local authority
- Coventry City Council
- Local commercial context
- automotive R&D and higher education
- Area type
- Neighbourhood
How a drain is actually traced
- Alternator output is checked under electrical load with headlights, blower and heated screen on, not just at idle.
- Circuits are isolated fuse by fuse to locate the offending module rather than guessing at the usual suspects.
- 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.
Repeat flat battery questions
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.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 Coundon and the CV6 area for this?
Yes. Coundon 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.Will I lose my radio code and seat memory?
No — we use a 12V memory saver on the OBD port during the swap, so all adaptations and settings are preserved.
Drain faults found nearby
Recent job nearby: a car in Coundon 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 Coundon, with the offending circuit identified rather than guessed. Ask for a battery replacement and quote your postcode — CV6 is a routine run for us.
Where we test
Working out from CV6, the practical radius for a battery replacement takes in Coventry, Nuneaton, Bedworth and Rugby — all within a few minutes of M6 J2/J3.
Why this is safe to book
- We will not sell a battery to a car whose battery is not the fault.
- Old batteries removed and recycled on every battery replacement.
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
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.
Related pages
- Van Jumpstart — battery keeps going flat in Coundon
- Fleet & Business Jumpstart — battery keeps going flat in Coundon
- Fleet and depot contracts — battery replacement in Coundon
- Car won't start, no click — battery replacement in Coundon
- Same-hour response — battery replacement in Coundon
- 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 Coundon — main page
- All jumpstart services in Coundon
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 battery replacement specifically, that means old battery taken away for proper lead-acid recycling — no charge, no landfill, dvsa-compliant paperwork
Stranded with a flat battery?
Call now or send a WhatsApp — we'll confirm your quote and dispatch the nearest engineer.