Ford B-Max Battery: Specs, Fitment & Common Faults

A stop-start system that's stopped working on the B-Max often points to a charging quirk, not a dead battery — here's the fix worth trying first.

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OEM Part Number: Type 027

Accuracy note: The B-Max (2012–2017) takes a 242 mm type 027 on the 1.4 / 1.6 petrol and 1.5 / 1.6 TDCi without stop-start, and a 027 or 096 EFB on the 1.0 EcoBoost stop-start. Check the three-digit type code, Ah and CCA printed on the battery you are removing before ordering — this model was built in more than one size. Stop-start cars must have an EFB or AGM battery, never a standard one.

1.4 / 1.6 Duratec petrol without stop-start	Type 027 standard (60Ah / 540A). Aftermarket: Yuasa YBX3027 (62Ah / 550A); Varta D15 / C22; Bosch S4 005
1.0 EcoBoost 100 / 125 stop-start	Type 027 EFB (65Ah / 650A, Varta D54) or 096 EFB (75Ah / 730A, Varta E46). Aftermarket: Yuasa YBX7027 EFB (65Ah / 600A) or YBX9027 AGM (60Ah / 640A); Varta N60 EFB / A8 AGM; Bosch S4E 051 / S5A 050
1.5 / 1.6 TDCi	Type 096 standard (74Ah / 680A) — EFB on stop-start cars. Aftermarket: Yuasa YBX3096 (76Ah / 680A); Varta E11 / E39; Bosch S4 008

Before Assuming the Battery Has Failed, Try This

A genuinely common source of confusion across Ford's stop-start range: the system frequently disables itself and displays a warning about charging or cold conditions, and many owners assume this means the battery has failed and needs replacing. In most cases it hasn't — Ford's Battery Management System deliberately disables stop-start when it judges the battery isn't in a strong enough state to reliably restart the engine, which is the system protecting itself rather than malfunctioning. Owner reports consistently show this resolving itself after a full overnight charge on a proper smart charger, without any need to replace a perfectly healthy battery.

A genuine, documented fix worth knowing: many Ford owners report a specific "charging reset procedure" resolving persistent stop-start and low-battery warnings without needing a new battery: with the ignition on (engine off), flash the main beam headlights five times, then press the brake pedal three times, and wait roughly 20 seconds for the battery warning light to flash, confirming the reset. This isn't an official Ford procedure, but it's widely reported across owner forums as genuinely effective — worth trying before assuming your battery needs replacing.

Ford B-Max Battery: Watch: Replacing It

🎬 Watch: Ford Fiesta Mk7 1.4 / 1.6 petrol battery replacement

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The B-Max shares the Fiesta Mk7 platform and battery layout.

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Ford B-Max Battery: Warning Signs, DIY Difficulty & Aftermarket Advice

These are the same regardless of make or model — see our full Battery Guide for warning signs to watch for, confirming fitment against your VIN, and matching the right technology (standard, EFB, AGM) when buying aftermarket.

More Ford Battery

The same part, covered across other Ford models.