BL51913 Li-Ion Motorcycle Battery 12V 7.5Ah - 0986122634, 1 Year Warranty

Motorcycle starting batteries must deliver reliable cold cranking performance whilst remaining compact enough for modern bike configurations. The Bosch BL51913 is a 12V 7.5Ah lithium-ion motorcycle battery rated at 450 CCA, engineered to meet those demands in a lightweight, maintenance-free format suitable for a wide range of motorcycles and powersports applications.

Developed within Bosch's dedicated lithium motorcycle battery programme, the BL51913 incorporates a built-in charge status indicator that provides an at-a-glance reading of available charge at any time. A passive cell balancer works in conjunction with the integrated voltage tester to ensure balanced discharge across all cells, supporting fast charging cycles and maintaining consistent output over the battery's service life.

The BL51913 measures 181mm 77mm 170mm (LWH) and weighs 1.7 kg, offering a significant weight reduction compared to equivalent lead-acid units. Polarity configuration should be confirmed by referring to the product label prior to installation. The EAN cross-reference for this unit is 4047025323987. Start-stop system compatibility has not been confirmed for this model; please refer to the product label for guidance.

This battery is one of several lithium motorcycle variants available from Bosch on PartsForMachines. Related models include the BLTX5L-BS, BLTX9-BS, BLTX14-BS, BLTZ10S, and BLIX30L-BSQ, covering a range of capacities and fitment requirements across the Bosch lithium motorcycle range.

The BL51913 is supplied with a 1-year manufacturer's warranty, providing assurance of dependable performance under everyday operating conditions.

Standard delivery: 13 working days within UK mainland. 30-day returns.

Easy to use thanks to the charge status indicator that allows to know at any time the charge status of the battery. The built-in voltage tester and passive balancer ensures balanced discharge and fast charging of the cells for more safety and performance 4 times higher service life compared to conventional batteries. The self-discharge is also extremely low : 3 times lower than an AGM battery and 9 times lower than a lead-acid battery. Acid-free battery, no leakage and absolutely maintenance-free. The battery can be installed in any position. For reliable and fast starting of sports and racing motorcycles, even in extreme weather and operating conditions Suitable for motorcycles with ABS and ESP® (racing machines, off-road and touring), enduros, scooters, quads, jet skis, applications with many electrical consumers Extended compatibility of several regular battery size types thanks to foams and spacers provided in the battery package (see technical sheet in document section) It is recommended to fully recharge the battery before installation and first use.

• Backed by a 1 Year Warranty-year warranty for dependable service life and reliable performance under everyday driving conditions.
• Product Group: 2632, BOSCH LITHIUM MOTORCYCLE BATTERY, engineered to deliver consistent starting power and steady performance in demanding automotive applications.
• Engineered as a No 12.0 battery, ensuring consistent current flow, strong cranking power, and stable voltage delivery.
• Manufactured by Bosch, a German engineering leader delivering advanced technology and durable performance in modern vehicles. .
• Weighs 1.7 kg (3.7 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 No 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.