Whisper Power 40290037 - GEL Battery 2 V - 440 Ah

Whisper Power 40290037 - GEL Battery 2 V - 440 Ah

The Whisper Power 40290037 - GEL Battery 2 V - 440 Ah is designed for applications that require long-lasting deep charge and discharge cycles. Utilizing advanced tubular plate technology, this maintenance-free GEL battery ensures that the electrolyte is contained within the gel, providing high efficiency and reliability. It is particularly well-suited for a variety of uses, including emergency power supplies, marine and mobile battery banks, and uninterruptible power supply (UPS) systems.

Key Features

• Long Lifespan: Engineered to last over 10 years, offering dependable power for extended periods.
• High Charge Capacity: Capable of handling high charge currents of up to 50% of its nominal capacity.
• Large Battery Bank Compatibility: Ideal for extensive battery banks ranging from 600 to 8000 Ah.
• Heavy-Duty Performance: Perfect for use with high-demand inverters that require intensive usage.
• Durable Cycle Life: Supports a large number of charge cycles (between 1200 and 3000), depending on discharge levels, ensuring long-term reliability.
• Extended Warranty: Comes with a 7-year warranty (restricted to cycles), providing peace of mind to users.

Technical Specifications

Dimensions: 145 × 206 × 506 mm (5.7" x 8.1" x 19.9")

Weight: ± 33.0 kg (72.8 lbs)

Nominal Capacity: 440 Ah (C10, cell 1.80 V, 20°C)

Nominal Voltage: 2 VDC

Terminal Type: 2 × M8

Charge / Discharge Parameters

Bulk Charge Voltage: 2.42 VDC at 20°C

Float Voltage: 2.25 VDC at 20°C

Initial Charge Current: 150 A

Temperature Ratio: -4 mV/cell/°C

Recommended Discharge Voltage (10 hours): 1.80 VDC/cell

Recommended Discharge Voltage (1 hour): 1.65 VDC/cell

Nominal Capacity at 20°C

10 Hours Discharge: 440 Ah

5 Hours Discharge: 370 Ah

1 Hour Discharge: 184 Ah

Self Discharge: Less than 3% per month at 20°C

Storage Time: Can be stored for up to 6 months at 20°C; charging before use is recommended.

Battery Parameters

Cyclic Life at 80% Discharge: 1250 cycles

Internal Resistance: Approximately 0.42 mΩ

Conclusion

The Whisper Power 40290037 - GEL Battery 2 V - 440 Ah is an excellent choice for those needing a powerful and efficient energy solution for demanding applications. With its long lifespan, high charge capacity, and maintenance-free operation, this battery provides dependable performance for marine, mobile, and backup power systems, ensuring reliable energy storage and use over time.