Mobile van jumpstart · Hybrid 12V auxiliary battery
Hybrid or EV dead in Moseley with a full traction battery? The 12V auxiliary is the usual culprit. Safe on-site testing and van jumpstart.

The safe boundary matters here. Everything we do is on the 12V side; the orange high-voltage system is left strictly alone.
Van won't turn over in Moseley? 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.
Bohemian south-Birmingham urban village around Moseley village green. — 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.
Drivers told by a breakdown service that the car needs recovering when it needs a 12V battery.
Domestically, Victorian villas and 1930s semis dominate around here, which shapes how these jobs are accessed and worked.
Hybrids and EVs are increasingly common on Victorian villas around Moseley, and 12V auxiliary failures now make up a growing share of our callouts.
Locally that means the streets between Moseley and Birmingham, with access via A435 Alcester Road and a practical radius reaching Birmingham (~3 mi) and Smethwick (~3 mi).
That is the 12V auxiliary. On-site testing and replacement across Moseley, without touching the high-voltage system. Tell us the vehicle and the symptom and you will get a firm price before anyone sets off.
Recent job nearby: a hybrid in Moseley completely unresponsive with a full traction battery. 12V auxiliary read 7.4V — replaced with an AGM unit, ready state confirmed on-site.
Recent job nearby: an EV near A435 Alcester Road that had been declared "needs recovery" by another provider. Powered up on the manufacturer jump points in under five minutes.
Van make, model, engine size and symptom — we already know if it's a battery, alternator or starter pattern.
Price agreed before we set off. Includes callout, jumpstart and full electrical health check.
AGM is standard for most hybrid auxiliaries and is fitted with the correct venting arrangement where the battery sits inside the cabin or boot.
Voltage, load, alternator output at 2000 rpm, parasitic draw. Real numbers, not guesses.
As a neighbourhood of Birmingham, Moseley is covered alongside its parent town, so a hybrid 12v auxiliary battery call from any of them routes to the same engineer.
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.
Because the 12V battery powers the computers that close the high-voltage contactors. Without it, the traction battery cannot be connected to anything.
Yes, at the designated 12V jump points, which are what we use. The high-voltage system is not involved and should never be touched roadside.
A DC-DC converter maintains it while the car is in ready mode. Short use and long standing still let it sink, exactly as with a conventional car.
Yes. Moseley is inside our routine coverage from Oldbury via A435 Alcester Road, roughly 3 miles from Birmingham. We cover it alongside Birmingham and the surrounding streets.
Usually yes, but sometimes it's the starter drawing too much current or a bad earth. We test all three on the driveway before recommending a replacement.
An electric car stopped by a lead-acid battery is a strange idea until it happens to you. In Moseley it is now one of the most common calls we take, and one of the quickest to fix. That is the whole job: diagnose it properly, fix it once, and explain what caused it.
Call now or send a WhatsApp — we'll confirm your quote and dispatch the nearest engineer.