Yuasa YBX7055 (M42R) 12V 40Ah 400A EFB Start Stop Battery, 12 Months Warranty

Vehicles equipped with start-stop systems place exceptional demands on their batteries, requiring reliable charge acceptance during regenerative braking and rapid recovery after each engine restart. The Yuasa YBX7055 is a 12V 40Ah Enhanced Flooded Battery (EFB) developed to meet these requirements within the YBX7000 EFB Start Stop range, offering a capable mid-tier solution for compatible start-stop applications. Manufactured by Yuasa, one of the world's foremost battery authorities, the YBX7000 EFB range employs Enhanced Flooded Battery technology, which utilises a polyester scrim material bonded to the positive plate. This construction improves charge acceptance, extends cycle life compared to conventional flooded batteries, and provides greater resilience against the deep discharge events characteristic of start-stop operation. The battery also achieves a W3 water loss rating, C2 charge retention classification, V3 vibration resistance, and M1 endurance rating under applicable EN standards. The YBX7055 is housed in a JIS B20 EFB (M42R) case and measures 197mm × 128mm – 227mm (L × W × H), weighing 11.5 kg. It delivers 400A Cold Cranking Amps (EN) and carries a T1/T3 terminal configuration with polarity 1 (positive terminal right). No hold-down bracket is required. The recommended charge rate is 2A. Start-stop compatibility should be confirmed by reference to the product label prior to fitment. No direct cross-reference codes are recorded for this SKU. The YBX7055 is available alongside related YBX7000 EFB variants including the YBX7100, YBX7027, YBX7005, YBX7053, and YBX7054, covering a range of capacities, case formats, and terminal configurations for differing vehicle requirements. This battery is supplied with a 12-month manufacturer's warranty from Yuasa, providing assurance of build quality and long-term performance. Standard delivery: 1–3 working days within UK mainland. 30-day returns. Yuasa YBX7055 (M42R) 12V 40Ah 400A EFB Start Stop Battery is a Yuasa YTX/YTZ AGM Powersports Battery engineered to deliver dependable power, long service life, and proven reliability across demanding applications. It pairs robust capacity with durable plate design to support frequent duty cycles and everyday use. The range reflects Yuasa's OE heritage, combining strict quality control with user‑friendly, maintenance‑saving construction for consistent results. Built to Yuasa standards, it offers consistent output, durable construction, and low maintenance demands. Built to Yuasa standards, it offers consistent output, durable construction, and low maintenance demands. Key Feature: Sealed AGM construction resists spills and vibration, enabling confident use on rough terrain. High power density supports quick starts and stable supply for lights and accessories. Low self‑discharge maintains charge during storage periods and intermittent seasonal use. Robust grid alloy helps resist corrosion and extends service life in tough conditions. Ready‑to‑install convenience reduces setup time and simplifies maintenance requirements. Compact case sizing improves fitment in tight compartments on motorcycles and ATVs. Covered by a 12-month warranty for reliable use and worry-free ownership. Compatibility: Compatible with motorcycles, scooters, ATVs and UTVs requiring compact, vibration‑resistant starting power. Designed for dependable service life across typical operating Uses: Deliver reliable engine starting and stable electrical support for lights, instrumentation and auxiliary accessories. Provide vibration‑resistant power on rough terrain, supporting safety systems and continuous riding performance. Maintain charge during off‑season storage, enabling quick readiness and dependable restarts after lay‑ups. Support frequent short trips with consistent voltage output and strong recharge acceptance between rides. Withstand temperature swings while sustaining cranking performance and electrical stability across conditions. About PartsForMachines: PartsForMachines is a premier e-commerce platform, founded in 2019 in Warwickshire, UK, specialising in aftermarket parts and services for construction, agriculture, and industrial machinery. We offer an extensive catalogue of over 500,000 products. Standard delivery: 1–3 working days within UK mainland. We are proud to be an authorised distributor, giving customers extra confidence when purchasing genuine products from us. In addition, we provide a 30-day return policy for eligible items. Fitment Warning: Always confirm physical dimensions, terminal type, post orientation (polarity), voltage, capacity and CCA against the OEM specification before installation. Incorrect fitment can damage the vehicle/equipment and void warranties. Use an approved charger and follow Yuasa/GS Yuasa safety guidance.