Yuasa SWU300-12FR Long-life High Rate UPS Battery (12V, 308WPC)

Yuasa SWU300-12FR Long-life High Rate UPS Battery (12V, 308WPC)


Capacity:308 Watts/cell
Terminal:M6 Threaded Insert
Dimensions (LxWxH):10.2" x 6.61" x 8.37"
Weight:60 LBS


This is a genuine Yuasa SWU300-12FR High Rate UPS battery.

Designed for standby applications, Yuasa’s SWU line of UPS batteries features their HT Element X Alloy™, a highly purified alloy that greatly minimizes the effects of grid corrosion and slows grid growth. The unique technologies implemented in the design of this battery leads to a long, reliable battery life that is designed to last in higher temperature applications.

  • 10-year design life.
  • Epoxy-sealed terminals.
  • Rugged ABS case to minimize handling damage.
  • Excellent performance in either float or cyclic applications.
  • Spill-proof operation.
  • UL listed.
  • 12 Volts, 308 Watts per Cell.

Yuasa is brand of GS Yuasa Corporation, the world’s second largest battery company and a 100+ year old Japanese corporation. Yuasa has for decades been a leading manufacturer of premium industrial and power sport batteries.

Features and Benefits from the Yuasa SWU300-12FR Spec Sheet:

  • Long Life Design
    • Low calcium alloy.
    • HT Element X Alloy™ extends life in high temperature applications.
    • Primary lead for long life.
    • Additives to maintain compression.
    • Designed to control charging current as temperature increases.
    • No thermal runaway.
    • Epoxy sealed terminals to prevent post leaks.
    • Handling damage minimized by Rugged ABS cases.
    • Spill Proof Operation – AGM Technology .
    • High gas recombination efficiency.
    • Performs in either float or cyclic applications.
  • Capacity Range: 308Wpc (15 min. rate).
  • 10 year Design Life  – Standby application.
  • Compliance
    • UL 1989.
    • ISO 9001:2000 factory manufactured.
    • UL 94V-0.
  • Recommended Float Charge Voltage: 13.65V +/- 0.15V
  • Recommended Temperature Compensation: 3mv/o C/cell
  • Internal Resistance: Approximately 4.7 mΩ measured with 1kHz AC bridge
  • Terminal Torque: 45 in.lbs.
  • Maximum 5 Second Discharge Current: 480A

*See warranty page for details

To learn more about the Yuasa line of SWU UPS batteries, see spec sheet here. 

Additional information

Weight 59.53 lbs
Dimensions 10.2 × 6.61 × 8.37 in

12 V

Amp Hour

Watts per Cell

308 WPC

Yuasa SWU300-12FR Long-life High Rate UPS Battery (12V, 308WPC)

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