Yuasa SWL2500EFR 12V 93.6Ah High Rate VRLA Battery

 Yuasa SWL2500EFR

12V 93.6Ah High Rate VRLA Battery

High-Rate Industrial Battery Engineered for Maximum Efficiency

  Yuasa SWL2500EFR is a premium 12V, 93.6Ah High Rate VRLA (Valve Regulated Lead-Acid) battery designed to deliver dependable performance in critical power systems. Built for industrial environments where rapid and stable discharge is required, this model provides high-rate output, long service life, and outstanding reliability. With a 10-minute constant power rating of 2940W per block, it is ideal for UPS systems, data centers, telecom, emergency power, and other high-demand applications.

Exceptional Power Output for High-Demand Systems

This model is specially engineered for applications requiring strong power delivery in short durations. At 20°C, it delivers:

• 2940W per block (10-minute rate to 9.6V)
• 490W per cell (10-minute rate to 1.6V per cell)

These numbers demonstrate the battery’s ability to handle sudden power loads without performance loss, making it a trusted choice for mission-critical operations where backup power must respond instantly.

Long-Lasting Capacity for Continuous Backup Performance

The Yuasa SWL2500EFR combines both high-rate output and long-duration efficiency. Its rated capacities include:

• 91.4Ah at the 10-hour rate (to 1.8V/cell at 20°C)
• 93.6Ah at the 20-hour rate (to 1.75V/cell at 20°C)

These ratings guarantee stable energy supply during prolonged outages, supporting uninterrupted performance for UPS units, emergency lighting, security systems, medical equipment, and other essential devices.

Compact and Durable Industrial-Grade Construction

Built for reliability in challenging conditions, the SWL2500EFR features:

• Length: 305mm
• Width: 168mm
• Height: 224.5mm
• Weight: 33kg

Its compact footprint makes installation easy in standard battery racks and cabinets. The battery housing uses UL94:V0 flame-retardant ABS material, offering enhanced safety, durability, and heat resistance.

Robust Terminals and Safe Installation

Yuasa equips this battery with M6 threaded female terminals, ensuring strong, secure connections during installation. The recommended torque of 4.8Nm provides optimal electrical contact and prevents terminal damage. This design supports quick, stable, and maintenance-friendly operation in industrial applications.

Wide Operating Temperature Range for Harsh Environments

The SWL2500EFR performs reliably across extreme temperature conditions:

• Storage: -20°C to +50°C
• Charge: -15°C to +50°C
• Discharge: -20°C to +60°C

This versatility ensures proper operation in data centers, telecom sites, outdoor cabinets, and industrial facilities exposed to variable climates.

Low Self-Discharge for Long Storage Life

Yuasa batteries are known for their storage efficiency. The SWL2500EFR loses only 3% of capacity per month at 20°C, allowing the battery to stay ready for service even after long periods of inactivity. This makes it a perfect choice for standby backup systems.

Optimized Charging System for Maximum Battery Life

To support longevity and stable performance, the battery features precise charging guidelines:

Float Charging

• 13.65V per block (±1%)
• 2.275V per cell (±1%)
• Temperature compensation: -3mV per cell per °C

This mode is ideal for continuous UPS standby charging.

Cyclic / Boost Charging

• 14.5V per block (±3%)
• 2.42V per cell (±3%)
• Temperature compensation: -4mV per cell per °C
• Max charge current: 22.5A

These settings ensure fast and safe recharge during cyclic use or after power outages.

High Short-Circuit Protection and Low Internal Resistance

Safety and performance are enhanced by:

• Internal resistance: 6.5mΩ
• Short-circuit current: 2258A
• Impedance at 1kHz: 4mΩ

Low internal resistance allows efficient current flow with minimal energy loss, supporting high-rate discharges while maintaining battery health.

Built for UPS, Telecom, and Industrial Backup Power

Thanks to its high-rate output, long service life, and strong temperature tolerance, the Yuasa SWL2500EFR is widely used in:

• UPS backup systems
• Data centers and server rooms
• Telecom base stations
• Emergency lighting systems
• Energy storage and industrial power
• Medical and laboratory equipment

Its performance and reliability make it a trusted battery for organizations that cannot afford power failure.