Mobile van jumpstart · Battery keeps going flat
Repeat Flat Batteries — Erdington van jumpstart & Diagnosis
New battery still going flat in Erdington? 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.
Commercial vans park up cold overnight in Erdington and refuse to start when the temperature drops. That's parasitic drain plus an ageing battery — a jumpstart on the spot beats a tow every time.
Around Erdington 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.
Usage patterns that flatten good batteries
Cars left standing on 1930s semis for a week or more between uses are the other common case in B23.
Locally that means the streets between Erdington and Birmingham, with access via M6 J6 (Spaghetti Junction) and A38(M) Aston Expressway and a practical radius reaching Birmingham (~4 mi) and Smethwick (~3 mi).
Who this page is for
Owners in Erdington on their second or third battery for the same vehicle.
Domestically, 1930s semis and high-street flats dominate around here, which shapes how these jobs are accessed and worked.
Flat again?
Third battery in two years is a diagnosis problem. We measure the draw and the charging output before anything is replaced. We route in via M6 J6 (Spaghetti Junction), roughly 4 miles out from Birmingham.
Local reference data — Erdington
- Service covered here
- Van Jumpstart
- County
- West Midlands
- Area type
- Neighbourhood
- Page focus
- Battery keeps going flat
- Local commercial context
- professional services and hospitality
- Postcode districts
- B23, B24
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.
- Alternator output is checked under electrical load with headlights, blower and heated screen on, not just at idle.
- Heavy-duty 2000A+ lithium jump pack rated for diesel commercials up to 7.5t
- On a van jumpstart the equipment is matched to the vehicle — cranking current, terminal layout and battery location all change the approach.
Repeat flat battery questions
Q.Do you cover Erdington and the B23 area for this?
Yes. Erdington is inside our routine coverage from Oldbury via M6 J6 (Spaghetti Junction), roughly 4 miles from Birmingham. We cover it alongside Birmingham and the surrounding streets.
Q.Can you jumpstart a large diesel van?
Yes — our packs are rated for LCVs and small trucks up to around 7.5 tonnes. A booster designed for petrol cars won't do it; ours will.
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.
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.
Drain faults found nearby
Recent job nearby: a car in Erdington 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 J6 (Spaghetti Junction) flattening weekly. Alternator produced 13.1V under load — replaced the charging fault, kept the original battery.
Where we test
Working out from B23, the practical radius for a van jumpstart takes in Birmingham, Smethwick, Sutton Coldfield and West Bromwich — all within a few minutes of M6 J6 (Spaghetti Junction).
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.
- Fully insured for work on driveways, business premises and private car parks across Birmingham City Council.
Related pages
- Car Jumpstart — battery keeps going flat in Erdington
- Fleet & Business Jumpstart — battery keeps going flat in Erdington
- Keyless entry and immobiliser issues — van jumpstart in Erdington
- Jump leads didn't work — van jumpstart in Erdington
- Trade van, first job of the day — van jumpstart in Erdington
- Battery keeps going flat in Birmingham (~4 mi)
- Battery keeps going flat in Smethwick (~3 mi)
- Battery keeps going flat in Sutton Coldfield (~7 mi)
- Battery keeps going flat across Birmingham
- Van Jumpstart in Erdington — main page
- All jumpstart services in Erdington
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 Erdington and the real fault usually appears within the hour. Locally this is handled alongside Birmingham and Smethwick, 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.