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Technical Specification
PRODUCT NUMBER EN850ER450ET650EN800
Voltage 12121212
Capacity (AH) 1109510090
Cold Cranking Amps (EN1) 750650800720
Length 349306353353
Width 175173175175
Height 235222190190

Q 1. What is the capacity and voltage of the Hella HX31MF?

A. The Hella HX31MF is a 12V battery with a capacity of 105Ah rated at the C20 discharge rate.

Q 2. What is the Cold Cranking Amp (CCA) rating of the HX31MF?

A. The HX31MF carries a Cold Cranking Amp rating of 740A measured to the EN standard, making it suitable for engine starting as well as deep-cycle leisure use.

Q 3. What are the physical dimensions of the Hella HX31MF?

A. The battery measures 330mm in length, 172mm in width, and 242mm in height including the terminal. It is housed in a BCI Group 31 (GR31) case.

Q 4. What terminal type does the HX31MF use and what is its polarity?

A. The HX31MF is fitted with Marine DT terminals. The polarity designation is 1, meaning the positive terminal is positioned on the left-hand side when the battery label faces you.

Q 5. Is the Hella HX31MF suitable for start-stop vehicles?

A. Compatibility with start-stop systems has not been confirmed for the HX31MF. Please refer to the label on the product itself before installing it in a start-stop application.

Q 6. What hold-down type does the HX31MF require?

A. The HX31MF requires a B00 hold-down type. Please verify that your battery tray and securing hardware are compatible before installation.

Q 7. Is the Hella HX31MF a sealed, maintenance-free battery?

A. Yes. The HX31MF is a sealed, maintenance-free lead-acid battery, meaning it does not require periodic topping up of electrolyte during normal service.

Q 8. What warranty is provided with the Hella HX31MF?

A. The HX31MF is backed by a 2-year manufacturer's warranty covering defects in materials and workmanship under normal operating conditions.

Q 9. Are there other capacities available in the Hella HX Marine and Leisure battery range?

A. Yes. The range includes the HX24MF, HX25MF, and HX27MF, each offering a different Ah capacity. These variants are listed on the PartsForMachines website if an alternative size is required.

Q 10. What are the delivery and returns terms for the Hella HX31MF?

A. The HX31MF is dispatched via standard parcel delivery and arrives within 1–3 working days to UK mainland addresses. A 30-day returns policy applies.

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