GEL Battery 2 V – 440 Ah

WhisperPower 2 V – 440 Ah (OPzV valve regulated) batteries are perfect for applications requiring long deep charge and discharge cycles. These maintenance-free GEL batteries are made with tubular plate technology, which contains the electrolyte within the GEL. Common uses include emergency power supplies, marine and mobile battery banks, and UPS systems.

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Designed to last for over 10 years

Suitable for high charge current (50% of nominal capacity)

Ideal battery for large battery banks (600 to 8000 Ah)

Best option for intensively used heavy duty inverter(s)

Suitable for a large number of charge cycles (1200 to 3000 depending on dis- charge level)

7 year warranty (Restricted to cycles)

Product specifications

ARTICLE NUMBER
40290037	GEL Battery 2 V - 440 Ah

TECHNICAL SPECIFICATIONS
Length x width x height	145 × 206 × 506 mm (5.7" x 8.1" x 19.9" inch)
Weight +/- 10%	33.0 kg (72.8 lb.)
Nominal capacity (C10, cel 1.80 V, 20°C)	440 Ah
Nominal voltage	2 VDC
Terminal type	2×M8

CHARGE / DISCHARGE PARAMETERS
Bulk charge voltage (V/cel)	2.42 VDC at 20°C
Float voltage (V/cel)	2.25 VDC at 20°C
Initial charge current (A)	150 A
Temperature ratio	-4mv/cel/°C
Recommended discharge voltage for 10 hours discharge (V/cel)	1,80 VDC/cel
Recommended discharge voltage for 1 hour discharge (V/cel)	1,65 VDC/cel

NOMINAL CAPACITY AT 20°C
NOMINAL CAPACITY AT 20°C	UP TO 1.80 VDC/CE
10 hours discharge	440 Ah
5 hours discharge	370 Ah
1-hour discharge	184 Ah
Peukeurt Coefficient	1,21<P<1,23
Usage at 25 A discharge	15 h
Self discharge	Less than 3% per month at 20°C
Storage time	OpzV batteries can be stored for up to 6 months at 20°C, recommended to charge before use.