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Technical Specification
PRODUCT NUMBER YBX1612YBX1630YBX1655YBX1657
Voltage 12121212
Capacity (AH) 143143126142
Hold Down NB3NN
Cold Cranking Amps (EN1) 900900750850
Terminal Type T1T1T1T1
Cell Layout 3300
Length 513513347345
Width 189189174175
Height 223223285275
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Q 1. What is the cold cranking amp (CCA) rating of the Numax 633 battery?

A. The Numax 633 delivers 680 Cold Cranking Amps (CCA) measured to the EN standard, making it suitable for reliable cold-weather engine starts in heavy commercial vehicles and agricultural machinery.

Q 2. What is the capacity of the Numax 633 battery?

A. The Numax 633 has a rated capacity of 135Ah on the C20 discharge rating, providing sustained power delivery for vehicles with high electrical load requirements.

Q 3. What are the physical dimensions of the Numax 633 battery?

A. The Numax 633 measures 360mm in length, 253mm in width, and 240mm in height including the terminal. Always verify these dimensions against your battery tray before ordering.

Q 4. What terminal type and polarity does the Numax 633 use?

A. The Numax 633 uses a Type 1 terminal configuration with Polarity 6 (positive terminal on the right when viewed from the front) and a B00 hold-down arrangement. Confirm compatibility with your vehicle before fitment.

Q 5. Is the Numax 633 compatible with start-stop vehicles?

A. Start-stop compatibility for the Numax 633 has not been confirmed. Refer to the product label or contact PartsForMachines before fitting this battery to a start-stop system vehicle.

Q 6. What cross-reference number does the Numax 633 battery carry?

A. The Numax 633 carries the cross-reference number 633. It has also been associated with references including GYS026339 and 026339. Always verify fitment against your original battery specification.

Q 7. What warranty does the Numax 633 battery carry?

A. The Numax 633 is supplied with a 2-year manufacturer's warranty covering defects under normal commercial operating conditions. Retain your proof of purchase for any warranty claim.

Q 8. Are there other capacities available in the Numax Premium CV range?

A. Yes. Related variants within the Numax Premium CV range available from PartsForMachines include the 612, 620, 622, 623, 624, 625, 629, 629UR, and 632. Contact PartsForMachines if you require assistance selecting the correct capacity for your application.

Q 9. How is the Numax 633 battery delivered and what is the returns policy?

A. The Numax 633 is dispatched on a pallet due to its size and weight. Delivery to UK mainland addresses typically takes 3–5 working days. Contact PartsForMachines for a delivery quote prior to ordering. A 30-day returns policy applies – refer to PartsForMachines terms and conditions for full details.

Q 10. What vehicles is the Numax 633 battery suitable for?

A. The Numax 633 is designed for heavy commercial vehicles, trucks, agricultural equipment, and plant machinery. Suitability is determined by matching voltage, capacity, CCA, dimensions, terminal type, and polarity — not vehicle make alone. Verify all specifications before purchase.

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