Marine electrical systems demand a battery that tolerates deep discharge cycles, prolonged load demands, and the corrosive environment of waterborne operation. The Numax M135 is a 12V 125Ah marine battery engineered to meet those conditions, providing a dependable power reservoir for onboard auxiliaries, navigation electronics, and cabin services across a wide range of leisure craft.
Manufactured under the Numax Standard range, this battery employs conventional flooded lead-acid technology optimised for leisure and marine duty cycles. The construction prioritises sustained energy delivery over extended periods, making it suitable for both house bank and secondary power applications where consistent capacity under moderate discharge is the primary requirement.
The M135 measures 345mm × 175mm – 210mm (L × W × H) and weighs 33.3kg, housed in an M135 case format with B00 hold-down specification and Polarity 0 (positive terminal right). Rated capacity is 125Ah at the C20 discharge rate. No direct cross-reference is listed; confirm fitment against case dimensions and terminal placement before ordering. Compatibility with start-stop systems is not confirmed – refer to the product label." No variants are currently available for this SKU. "The Numax M135 is supplied with a 2-year warranty, covering manufacturing defects under normal operating conditions.
Delivery: pallet shipment, typically 3–5 working days within UK mainland. Contact PartsForMachines for delivery quote. 30-day returns.
Choosing the correct leisure battery is all about understanding your power usage. The Numax leisure range covers all situations, applications and levels of power usage depending on what you need from your battery. Leisure battery performance is measured in cycles; these cycles are what determine their NCC rating. Battery cycles refer to the number of discharge/recharge cycles the battery is capable of when discharged by up to 50% between recharging.
Key Feature:
- Backed by a 2 Years Warranty-year warranty for dependable service life and reliable performance under everyday driving conditions.
- Product Group: 2332, NUMAX MARINE 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.
- Built by Numax, offering dependable everyday performance and excellent value for a wide range of vehicles.
- Weighs 33.3 kg, 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:
Engineered for leisure and recreational vehicles, offering deep-cycle discharge capability and sustained energy delivery for extended off-grid power during camping or seasonal travel use.
Uses:
- 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.
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.