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Technical Specification
PRODUCT NUMBER LF057MX5A9LF012LF053
Voltage 1212121212
Capacity (AH) 4540505045
Cold Cranking Amps (EN1) 320310540520370
Terminal Type 31113
Length 236194207207236
Width 125120175175125
Height 220180190190220
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Q 1. What vehicle types is the Exide EK457 designed for?

A. The EK457 is designed for micro-hybrid vehicles equipped with start-stop systems. It is built to handle the increased cycling demands that start-stop operation places on a battery, including support for regenerative braking energy recovery.

Q 2. What are the key specifications of the EK457?

A. The Exide EK457 is a 12V AGM battery with a 45Ah capacity (C20) and a cold cranking amp rating of 380A (EN). It measures 237mm × 127mm × 227mm and weighs 13.5kg.

Q 3. What is the cross-reference code for the EK457?

A. The EK457 cross-references to 057AGM. If your vehicle's original battery or workshop manual specifies the 057AGM fitment, the EK457 is the corresponding Exide AGM replacement.

Q 4. What polarity layout does the EK457 use?

A. The EK457 uses polarity 1, which means the positive terminal is positioned on the left when the battery is viewed from the terminal side. Always confirm the polarity matches your vehicle's battery tray and cable configuration before fitting.

Q 5. What case type and hold-down configuration does the EK457 have?

A. The EK457 uses a B24 case type with a B00 hold-down configuration. These designations define the battery's physical footprint and the location of the hold-down ledge, which must be compatible with your vehicle's battery tray.

Q 6. Can the EK457 be used as a direct replacement for a conventional flooded battery?

A. The EK457 is an AGM battery and is intended as a like-for-like replacement where an AGM battery is specified. Fitting an AGM battery in a vehicle originally equipped with a conventional flooded battery may require reconfiguration of the vehicle's battery management system. Consult a qualified technician if you are unsure.

Q 7. Why does a start-stop vehicle require an AGM battery rather than a standard battery?

A. Start-stop systems restart the engine automatically at every stop, creating significantly more charge and discharge cycles than a conventional vehicle. AGM technology uses absorbed glass mat separators that allow higher charge acceptance rates, greater deep-cycle resilience, and longer service life under these conditions – performance that standard flooded batteries are not designed to sustain.

Q 8. What warranty does the EK457 carry?

A. The Exide EK457 is covered by a 3-year warranty. This provides assurance of reliable performance during the warranty period, subject to the terms and conditions applicable at the time of purchase.

Q 9. Are other capacities available in the Exide AGM Start Stop range?

A. Yes. Related variants include the EK508 and EK620, which offer higher capacities for vehicles with greater power demands, as well as the EK454 for applications requiring a slightly different specification. All are available on the PartsForMachines platform.

Q 10. What are the delivery and returns terms for the EK457?

A. Standard delivery is 1–3 working days within UK mainland. A 30-day returns policy applies. For full terms and conditions, please refer to the PartsForMachines returns policy at the time of purchase.

Q 11. What are the returns terms for the EK457?

A. A 30-day returns policy applies. For full terms and conditions, please refer to the PartsForMachines returns policy at the time of purchase.

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