Heavy commercial vehicles demand starting batteries capable of sustaining high electrical loads across extended duty cycles, particularly in cold or demanding operating environments. The Numax S637 is a 12V 120Ah standard commercial vehicle battery engineered to meet those requirements, delivering 680 cold cranking amps to ensure reliable engine starts across a broad range of trucks, coaches, agricultural machinery, and large plant equipment.
Manufactured within the Numax Commercial range, the S637 is built to exacting specification using established lead-acid technology, balancing robust construction with consistent cranking performance under everyday working conditions. Numax batteries are developed to address the increasing electrical demands of modern commercial vehicle systems without compromise on durability or service life.
The S637 measures 513mm × 189mm – 225mm (L × W × H) and weighs 31.5kg. It is supplied in Case A format with Type 1 terminals, Hold-Down type B00, and Polarity 3. The cross-reference number is 637. Start-stop compatibility is not confirmed – please refer to the product label before fitting.
This battery is one of several Numax Commercial variants available on PartsForMachines, including the 249H, 250H, 643, 663, 664, 665, 616R, 663H, 616L, and 630, spanning a range of capacities and configurations to suit different commercial vehicle applications.
The S637 is covered by a 2-year warranty, providing documented assurance of performance and build quality under normal operating conditions.
Delivery: pallet shipment, typically 3–5 working days within UK mainland. Contact PartsForMachines for delivery quote. 30-day returns.
Quality, durability and performance sum up the NUMAX range of batteries. NUMAX batteries are built to the very highest specification to cope with today’s automotive electrical demands. The NUMAX automotive range has a battery to suit every application whilst providing premium quality and value. That’s why people trust the NUMAX battery brand to give them the performance they need no matter how harsh the conditions.
Key Feature:
- Backed by a 2 Years Warranty-year warranty for dependable service life and reliable performance under everyday driving conditions.
- Product Group: 2310, NUMAX STANDARD CV BATTERY, engineered to deliver consistent starting power and steady performance in demanding automotive applications.
- Engineered as a 1 12.0 battery, ensuring consistent current flow, strong cranking power, and stable voltage delivery.
- Built by Numax, offering dependable everyday performance and excellent value for a wide range of vehicles.
- Weighs 31.5 kg (69.4 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.
Compatibility:
Developed by Numax as a 12.0 1 battery, offering stable energy output, dependable starting power, and compatibility across general automotive and light commercial applications.
Uses:
- Restores dependable starting for vehicles that require consistent, everyday performance in regular driving conditions.
- Suited to 1 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.
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:
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.