Small-displacement motorcycles demand a battery that can deliver reliable cold cranking performance within a compact, lightweight envelope – particularly where under-seat or fairing-mounted space is restricted. The Numax NTX4LBS is an AGM (Absorbent Glass Mat) 12V 3Ah motorcycle battery supplied complete with an acid pack, ready for activation prior to fitment.
Numax engineers AGM technology with a sealed, maintenance-free construction in which the electrolyte is immobilised within a fibreglass mat separator. This eliminates acid stratification, reduces self-discharge, and provides vibration resistance suited to motorcycle applications. The battery is rated at 50 CCA (EN), making it appropriate for small-capacity petrol engines. The AGM platform also supports start-stop technology – confirm compatibility by checking the product label before installation.
The NTX4LBS measures 113mm (L) × 70mm (W) × 87mm (H inc. terminal) and weighs 1.36 kg. It features a Terminal 2 layout with Polarity 0 (positive terminal on the left when viewed from the front) and Hold-Down type B00. The direct cross-reference for this battery is YTX4L-BS, making it a compatible replacement for a broad range of Japanese and European small-bore machines.
This battery is part of the wider Numax motorcycle AGM range, which spans virtually every standard motorcycle battery size. Related variants within the series include the NTS12AA, NTS14B4, NTS14BS, NTS16BS, and NTS20LBS, among others, covering a broad spectrum of capacities and case formats.
The NTX4LBS is supplied with a 1 year warranty, providing assurance of dependable service life under everyday riding conditions.
Standard delivery: 1–3 working days within UK mainland. 30-day returns.
NUMAX motorcycle batteries offer great performance at a budget price. The range is vast covering almost every size of bike battery ever made. Each NUMAX motorcycle battery comes complete, either with an acid pack or factory sealed.
Key Feature:
- Backed by a 1 Year Warranty-year warranty for dependable service life and reliable performance under everyday driving conditions.
- Product Group: 2350, NUMAX MOTORCYCLE BATTERY, engineered to deliver consistent starting power and steady performance in demanding automotive applications.
- Engineered as a 2 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 1.36 kg (3.0 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.
Compatibility:
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.
Uses:
- Restores dependable starting for vehicles that require consistent, everyday performance in regular driving conditions.
- Suited to 2 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.