Mobile battery replacement · Battery keeps going flat
Battery Keeps Going Flat in Tile Hill? Drain Testing & Battery Replacement
Flat again in Tile Hill? We measure quiescent current and alternator output before selling anyone another battery. Mobile Battery Replacement, 24/7.
Buying a second battery for the same car in a year is the clearest sign the first one was never the problem. Something is either draining charge while the car sleeps, or failing to put it back while the car runs.
Battery gone in Tile Hill? 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.
The wrong battery in a stop-start car will show a warning light within days and drain itself trying to charge to spec. We fit the OEM chemistry every time.
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.
- Tier-1 batteries only — Yuasa, Varta, Bosch, Exide — with a real 2–4 year warranty and traceable batch codes
- 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 post-war estates for a week or more between uses are the other common case in CV4.
Locally that means the streets between Tile Hill and Coventry, with access via M6 J2/J3 and M69 and a practical radius reaching Coventry (~4 mi) and Nuneaton (~9 mi).
Who this page is for
Low-mileage drivers whose cars sit for days between short journeys.
Domestically, post-war estates and modern infill dominate around here, which shapes how these jobs are accessed and worked.
Drain faults found nearby
Recent job nearby: a car in Tile Hill 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.
Local reference data — Tile Hill
- County
- West Midlands
- Main routes
- M6 J2/J3 · M69 · A45
- Nearest major town
- Coventry (~4 miles)
- Service covered here
- Battery Replacement
- Local authority
- Coventry City Council
- Postcode districts
- CV4
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 Tile Hill and the CV4 area for this?
Yes. Tile Hill is inside our routine coverage from Oldbury via M6 J2/J3, roughly 4 miles from Coventry. We cover it alongside Coventry and the surrounding streets.
Q.How do I know my battery needs replacing rather than jumpstarting?
If it's over 4 years old and going flat repeatedly, or the CCA on a load tester reads under 60% of rated, it's replacement time. Jumpstarting will only get you a day or two.
Q.What do you do with my old battery?
It goes back to a licensed recycler. Around 99% of a lead-acid battery is recyclable. No landfill, and we don't charge for disposal.
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.
Stop buying batteries. Find the drain.
Proper quiescent current testing in Tile Hill, with the offending circuit identified rather than guessed. Battery Replacement covers post-war estates and modern infill and trade vehicles alike, all from the same van.
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
Alternator output is checked under electrical load with headlights, blower and heated screen on, not just at idle.
Where we test
As a neighbourhood of Coventry, Tile Hill is covered alongside its parent town, so a battery keeps going flat call from any of them routes to the same engineer.
Related pages
- 24/7 Emergency Jumpstart — battery keeps going flat in Tile Hill
- Car Jumpstart — battery keeps going flat in Tile Hill
- Alternator or battery? — battery replacement in Tile Hill
- Vehicle left standing — battery replacement in Tile Hill
- Jump leads didn't work — battery replacement in Tile Hill
- Battery keeps going flat in Coventry (~4 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 Tile Hill — main page
- All jumpstart services in Tile Hill
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 tier-1 batteries only — yuasa, varta, bosch, exide — with a real 2–4 year warranty and traceable batch codes
Stranded with a flat battery?
Call now or send a WhatsApp — we'll confirm your quote and dispatch the nearest engineer.