Auxiliary electrical systems in modern vehicles – particularly those equipped with advanced driver assistance features, infotainment, or stop-start technology – demand a dedicated secondary power source capable of sustaining consistent voltage under repeated partial-state-of-charge cycling. The Exide EK111 is a 12V 11Ah AGM auxiliary battery engineered specifically for this role, providing stable, low-maintenance power support alongside the vehicle's primary starter battery.
Manufactured by Exide Technologies, one of Europe's most established battery producers, the EK111 uses absorbent glass mat (AGM) construction. The electrolyte is suspended within fibreglass matting, producing a valve-regulated, leak-proof (VRLA) cell with high cycle life and an extended shelf life compared with conventional flooded equivalents. This makes it well suited to auxiliary applications where the battery may experience prolonged periods of low or partial charge.
The EK111 measures 150mm (L) × 90mm (W) × 130mm (H including terminal) and is housed in a C55 case with a B00 hold-down configuration and polarity 1 layout. It delivers 150 CCA (EN) and an 11Ah capacity at the C20 rate, weighing 3.9kg. No direct cross-reference codes are listed; fitment should be confirmed against the original equipment specification. Start-stop compatibility is supported by the AGM technology – verify applicability via the product label before installation.
The EK111 is available as part of the Exide AGM auxiliary range. Related variants include the EK091, EK131, EK143, EK151, and EK013, covering a range of capacities and case sizes for differing vehicle requirements." This battery is supplied with a 1-year manufacturer warranty. "Standard delivery: 1–3 working days within UK mainland. 30-day returns.
Auxiliary batteries power the electrical equipment in certain cars, as a complement to the main starter battery.
Absorbent glass mat
High cycle life
Long shelf life
VRLA (valve regulated) for leak-proof security
Original equipment experience inside
Key Feature:
- Backed by 1-year warranty for reliable use and dependable performance.
- Product Group: 2510, EXIDE Auxiliary Battery, purpose-built for dependable performance in the intended application.
- Engineered as a AGM Battery, delivering consistent, reliable operation in daily use.
- Manufactured by Exide, a trusted name in automotive batteries, known for dependable quality.
- Weighs 3.9 kg (8.6 lb) balancing power and manageability for easier installation and handling.
- OEM-style fitment supports straightforward replacement and proper mounting.
- 12V system compatible with standard vehicle electrical requirements.
Compatibility:
Suited for passenger cars, balancing reliable cold-cranking performance with long service life for daily use.
Uses:
- Restores dependable starting for vehicles that need consistent, everyday performance.
- Suited to AGM Battery applications, delivering steady operation in daily driving conditions.
- Supports stable power delivery for ignition, lighting, and onboard electronics.
- Performs reliably across short trips and longer runs where dependable restarts are essential.
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Fitment Warning:
You must check your current battery against the specifications of this battery before ordering to ensure that this is the correct battery for your vehicle. Check battery technology, dimensions, terminal type, polarity, capacity (AH) and cranking performance (CCA). We cannot guarantee correct fitment under any circumstances.