Sourcing a dependable lithium deep-cycle battery for demanding stationary, mobility, or renewable energy applications requires a product that balances energy density with long cycle life. The Rolls Battery Engineering R12-135LFP is a 12V, 135Ah Lithium Iron Phosphate (LiFePO4) battery engineered to serve as a direct drop-in replacement for sealed lead-acid batteries, delivering 1728Wh of usable capacity in a compact, lightweight form factor.
Built on Rolls Battery Engineering's R Series LiFePO4 chemistry, this battery offers fast charge and discharge capability, a significantly longer usable cycle life than conventional SLA technology, and up to 50% weight reduction compared to equivalent lead-acid units. The R Series platform supports up to 48V connectivity, enabling series or parallel configuration for larger system builds." The R12-135LFP measures 330mm × 173mm – 219mm (L × W × H) and weighs 15kg. Terminal type and case format should be confirmed via the product label prior to installation. Polarity configuration must also be verified on the product label. No direct cross-reference codes apply to this unit. Start-stop vehicle compatibility has not been confirmed – refer to the product label. "This battery is available in additional capacities within the Rolls R Series LiFePO4 range: R12-150LFP (150Ah), R12-200LFP (200Ah), R12-300LFP (300Ah), and R12-450LFP (450Ah), allowing system designers to scale capacity to requirement.
The R12-135LFP is covered by a 3-year manufacturer warranty, providing documented assurance of build quality and performance reliability over the service period.
Delivery: hazardous goods shipping applies, typically 3–5 working days within UK mainland. 30-day returns.
Rolls Series 4000 Deep Cycle Batteries - The Rolls series 4000 batteries are available in 2V, 6V or 12V configuration and offer a wide range of capacities. Used in a variety of applications including renewable energy systems, they have a long life expectancy and one of the longest warranty periods available.
Combination of thick plate design with the highest density active material. Envelope separators. Increased electrolyte reserve. Greater rigidity. Greater durability. Sediment chamber removed allowing higher plates to be used in the same sized cell, thus yielding greater capacity. Unsurpassed cycling service. Less maintenance.
Key Feature:
- Backed by a 3 Years Warranty-year warranty for dependable service life and reliable performance under everyday driving conditions.
- Product Group: 4606, ROLLS SERIES 4000, engineered to deliver consistent starting power and steady performance in demanding automotive applications.
- Engineered as a No 2.0 battery, ensuring consistent current flow, strong cranking power, and stable voltage delivery.
- Manufactured by Rolls, a trusted brand delivering reliable automotive power and longevity .
- Weighs 15.0 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:
Built for industrial and construction machinery, supplying consistent power output and resilience to meet demanding start-stop and auxiliary power needs in tough operating conditions.
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.