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A. The Optima YTR3.7 (8040-222) is rated at 660 Cold Cranking Amps (CCA) measured to the EN standard, making it suitable for reliable cold-weather engine starting in demanding applications.
A. The battery has a rated capacity of 48Ah measured at the C20 discharge rate. Capacity figures at C5, C10, and C100 rates and Watt-Hour (WH) data are not published for this reference; for precise energy budgeting, consult Optima's technical documentation.
A. The Optima Yellow Top AGM technology supports start-stop system operation. However, compatibility depends on the specific vehicle's battery management system requirements. Always verify against the product label and your vehicle manufacturer's specification before installation.
A. The battery uses standard polarity (positive terminal on the left, polarity code 0) and is fitted with SAE Post terminals (Type 1). The hold-down specification is B01. Confirm these match your vehicle's battery tray and cable layout before ordering.
A. Yes. The Yellow Top series is designed for both starter (cranking) and cyclic (deep-discharge) duty. It is particularly suited to vehicles carrying high-demand auxiliary electronics, upfitted commercial vehicles, heavy equipment, and specialist applications such as emergency vehicles where sustained power delivery alongside regular engine starting is required.
A. No direct cross-reference part numbers are listed for this product. To confirm suitability, match the voltage (12V), capacity (48Ah), CCA (660A EN), dimensions (237 × 171 × 197mm), terminal type, and polarity against your existing battery or vehicle specification sheet.
A. The battery is covered by a 2-year manufacturer warranty against defects in materials and workmanship. Retain your proof of purchase and ensure the battery is installed and maintained in accordance with Optima's guidelines to protect warranty eligibility.
A. Orders are dispatched via standard parcel service with delivery in 1–3 working days to UK mainland addresses. A 30-day returns policy applies; the battery must be returned in its original condition and packaging. Contact PartsForMachines customer services to arrange a return.
A. The Yellow Top uses Optima's Spiralcell AGM (Absorbent Glass Mat) construction, in which the electrolyte is fully absorbed into glass mat separators wound around the lead plates. This eliminates free acid, dramatically improves vibration resistance, and enables repeated deep-discharge and recharge cycling — capabilities that conventional flooded batteries cannot reliably sustain.
A. The battery measures 237mm (length) × 171mm (width) × 197mm (height including terminal) and weighs 17kg. Ensure your battery tray accommodates these dimensions and that the vehicle's mounting system is compatible with the B01 hold-down specification.
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