502903003 Varta Powersports AGM TR4A-BS Battery 12V 3Ah, 1 Year Warranty

Small-displacement powersports engines demand a battery that can deliver reliable cold-start performance within a compact footprint – the Varta 502903003 Powersports AGM TR4A-BS is engineered precisely for that requirement. Rated at 12V with a 3Ah capacity and 30 CCA (EN), it is built for modern motorcycles, scooters and quad bikes where space is at a premium and consistent ignition performance is non-negotiable.

Drawing on Varta's Dynamic AGM technology, the TR4A-BS uses absorbent glass mat construction to immobilise the electrolyte, eliminating acid stratification and reducing internal resistance. This design delivers stable power output across a wide temperature range and supports the start-stop cycling demands of compatible modern powersports applications – verify start-stop suitability against the product label prior to fitment.

The battery measures 114mm (L) × 49mm (W) × 86mm (H inc. terminal), weighs 0.9 kg, and is supplied with Y12 terminals. Terminal polarity is configuration 4; hold-down type is B00. The industry cross-reference for this unit is TR4A-BS, making it a direct replacement for similarly coded batteries from competing manufacturers.

This battery is part of a broader Varta Powersports AGM range. Variants available include SKUs 503909005, 510909017, 512905020, 512908021, 512909020, 512918021, 518908027, 518908032, 518909027 and 518918032, covering a range of capacities and fitment configurations.

The 502903003 is covered by a 1-year warranty, providing assurance of product quality and reliable service life under normal operating conditions.

Standard delivery: 1–3 working days within UK mainland. 30-day returns.

Powersports AGM Deliver maximum power in even extreme conditions. VARTA® Powersports batteries deliver the power you need – no matter what vehicle or terrain. They are made for modern motorcycles, scooters and quad bikes. The battery range provides reliable starting power, exceptional supply energy and a robust construction to withstand vibrations. AGM technology is the optimal solution for motorcycles with increased energy requirements. In addition to the better cold start performance, the AGM batteries can be mounted with an installation angle of up to 45 degrees. The VARTA® Powersports AGM batteries are ideal for storage thanks to the acid pack supplied separately.

• Backed by a 1 Year Warranty-year warranty for dependable service life and reliable performance under everyday driving conditions.
• Product Group: 2185, VARTA POWERSPORT FUNSTART AGM BATTERY, engineered to deliver consistent starting power and steady performance in demanding automotive applications.
• Engineered as a Y12 12.0 battery, ensuring consistent current flow, strong cranking power, and stable voltage delivery.
• Produced by Varta, known for PowerFrame grid technology and efficient current flow for longer service life.
• Weighs 0.9 kg (2.0 lb), balancing high capacity with manageable handling for easy fitting and routine maintenance.
• OEM-style design ensures perfect terminal alignment, secure fitment, and support for both standard and start-stop vehicle systems.

optimised for motorcycles and two-wheelers, ensuring consistent ignition power, rapid recharge capability, and stable energy supply for compact high-performance engines and accessory systems.

• Restores dependable starting for vehicles that require consistent, everyday performance in regular driving conditions.
• Suited to Y12 battery applications, delivering steady operation for vehicles with start-stop or accessory-heavy systems.
• Supports stable electrical output for ignition, lighting, infotainment, and critical onboard electronics in all environments.
• Performs reliably across short commutes and longer journeys where consistent restarts and electrical stability are essential.

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.

You must check your current battery against the specifications of this battery before ordering to ensure that this is the correct battery for your vehicle. Check battery technology, dimensions, terminal type, polarity, capacity (AH) and cranking performance (CCA). We cannot guarantee correct fitment under any circumstances.