Yuasa REC50-12 Cyclic 12 V 50 Ah

The Yuasa REC50-12 is a cycle-resistant VRLA industrial battery with 12 volts and 50 Ah over 20 hours. It combines high cycle life, low impedance and stable power output in a compact form. Ideal for mobile applications, rehabilitation and medical technology, cleaning machines, drive and supply systems, photovoltaic buffering as well as UPS in cyclic operation.

Highlights at a glance

• Cycle resistant: Up to 1400 cycles at 25 percent DOD.
• Reliable capacity: 50 Ah with 20-hour discharge down to 10.5 V, 40 Ah with 10-hour discharge down to 10.8 V.
• High current load capability: Maximum 400 A for 1 second and 185 A for 1 minute.
• Easy installation: M5 female threaded connection, recommended tightening torque 2 to 3 Nm.
• Low self-discharge: About 3 percent per month at 20 °C.

Maximum performance for demanding cyclic applications

The REC50-12 is designed for repeated charging and discharging operations. AGM technology and valve-regulated oxygen recombination ensure efficient gas binding and low maintenance. The low impedance supports high peak currents, ensuring that connected consumers are reliably supplied even during dynamic load profiles.

Efficiency meets long service life

For standby use, the float charge voltage is 13.65 V ±1 percent per block, with temperature compensation of minus 3 mV per cell and degree Celsius. For cyclic or boost charging, 14.52 V ±3 percent per block is provided, with compensation of minus 4 mV per cell and degree Celsius. 

The recommended current limitation is 12.5 A for both float and cyclic use. The EUROBAT classification General Purpose 6 to 9 years and the Yuasa Design Life of 7 years at 20 °C confirm its endurance in operation.

Technology for flexible applications

The operating temperature range covers discharge from minus 15 °C to plus 40 °C, charging from 0 °C to plus 40 °C, and storage from minus 15 °C to plus 50 °C. Each cell is equipped with a low-pressure relief valve. VRLA batteries release hydrogen. Do not operate the battery in gas-tight housings and ensure adequate ventilation.

FAQs about the Yuasa REC50-12I battery

What is the expected service life?

The EUROBAT classification indicates 6 to 9 years. Yuasa states a Design Life of 7 years at 20 °C. The actual service life depends on temperature, charge management, and cycles.

How is the battery installed?

Mounting is possible in any position except permanently upside down. The electrical connection is made via M5 threaded terminals.

Are there any special safety instructions?

Each cell is equipped with a low-pressure relief valve. VRLA batteries must not be used in gas-tight enclosures. At the end of life, the battery must be recycled in accordance with local and national regulations.

What is the REC50-12I designed for?

For cyclic applications with many charge and discharge operations, such as mobility, cleaning machines, leisure, and renewable energies. The REC series is a VRLA-AGM range with high cycle resistance.

How high is the self-discharge and what does this mean for storage?

Typical is about 3 % capacity loss per month at 20 °C. For longer storage periods, regular recharging is advisable.

Which chargers are suitable for the REC50-12I battery?

Chargers or controllers with constant voltage for VRLA-AGM batteries are suitable for the Yuasa REC50-12I. Set the voltages specified in the data sheet and consider temperature compensation. If necessary, an equalisation or top-up charge should be carried out before commissioning.