Whisper Power 40290062 - AGM Battery 12 V - 145 Ah

Whisper Power 40290062 - AGM Battery 12 V - 145 Ah

The Whisper Power 40290062 AGM Battery 12 V – 145 Ah is a top-tier, economical solution for those seeking a long-lasting and maintenance-free energy source. This battery is designed using Valve Regulated Lead Acid (VRLA) technology, which minimizes ventilation needs and allows for flexible positioning without the requirement to stand upright. With a nominal voltage of 12 VDC and a substantial capacity of 145 Ah, it is ideally suited for medium-sized inverters, providing reliable power for entire DC installations. This battery also excels in applications such as powering pumps and winches and is versatile enough for marine, mobile, and solar energy systems, as well as serving effectively as a starter battery.

Key Features

• Maintenance-free design ensures consistent performance without the hassle of upkeep.
• Utilizes advanced VRLA technology, allowing for versatile installation without ventilation requirements.
• Nominal capacity of 145 Ah, catering to significant energy demands.
• Ideal for medium-sized inverters, ensuring a stable power supply for comprehensive DC systems.
• Perfect for powering pumps, winches, and suitable for various applications, including marine, mobile, and solar energy systems.

Technical Specifications

Dimensions: Length x Width x Height - 340 × 173 × 280 mm (13.4" x 6.8" x 11" inch)

Weight: 44.0 kg (97 lb) ± 10%

Nominal Capacity: 145 Ah

Nominal Voltage: 12.0 VDC

Terminal Type: M8 stainless steel

Number of Cells: 6

Charge / Discharge Parameters

Constant Charge Voltage (IU, float): 13.60 .. 13.80 VDC at 25°C

Cyclic Charge Voltage (IUU, absorption): 14.25 .. 14.60 VDC at 25°C

Maximum Recommended Charge Current: 40 to 50% of nominal capacity

Temperature Ratio: -4 mV/cell/°C

Discharge Voltage: 1.75 VDC @ (A) ≤ 0.2°C; 1.70 VDC @ 0.2°C (A) ≤ 1.0°C

Full Discharge (100% DOD): 1.65 VDC @ (A) ≥ 1.0°C

Nominal Capacity at 25°C

• 20 Hours Discharge: 167.0 Ah
• 10 Hours Discharge: 145.0 Ah
• 5 Hours Discharge: 131.0 Ah

Peukeurt Coefficient: 1.21 < P < 1.24

Usage at 25 A Discharge: 305 minutes

Self Discharge: Less than 3% per month at 25°C

Storage Time: AGM batteries can be stored for up to 6 months at 25°C; it is recommended to charge before use.

Battery Parameters

Inrush Current at 25°C (5s): 1450 A

Cyclic Life at 80% Discharge: 400 cycles

Internal Resistance (approx.): 4.5 mΩ