VRLA 4V0.5Ah - Specifications

Nominal Voltage

Rated Capacity @20hr rate

Maximum Charge Rate

Maximum Discharge Amps 5 sec.

Internal Resistance

4V

0.5Ah

0.25Amps

12Amps

55Mili Ohms

Capacity
@ 77ºF (25ºC)

0.50Ah @ 20 hour rate (25mA) to 1.75 volts per cell

0.42Ah @ 10 hour rate (42mA) to 1.75 volts per cell

0.34Ah @ 5 hour rate (68mA) to 1.75 volts per cell

0.30Ah @ 3 hour rate (100A) to 1.75 volts per cell

0.21Ah @ 1 hour rate (210mA) to 1.75 volts per cell

Dimensions

Length

39mm (1.54inches)

Width

14mm (0.56inches)

Height

50mm (1.97inches)

Total Height

50mm (1.97inches)

Weight

0.07kg (0.16lbs)

Operating Temperature Range

Discharge

-4ºF (-20ºC) to +140ºF (60ºC)

Charge

14ºF (-10ºC) to +122ºF (50ºC). (with temperature compensation)

Recommonded Operating Temperature Range

+68ºF (20ºC) to +77ºF (25ºC).

Charging (Constant Voltage)

Cycle use

Initial Current 0.1Amps (recommended).

Voltage 4.83-4.97Volts @77ºF (25ºC)

Float use

Voltage 4.53-4.6Volts @77ºF (25ºC)

Self Discharge
@ 77ºF (25ºC)

Capacity after 3 month storage

90%

Capacity after 6 month storage

80%

Capacity after 12 month storage

60%

CCB Battery may be stored for up to 12 months at 77ºF (25ºC) and then a freshing charge is required. For higher temperatures the time interval will be shorter.

Capacity affected by Temperature (20 hour rate)

104ºF (40ºC)

102%

77ºF (25ºC)

100%

32ºF (0ºC)

85%

58ºF (-15ºC)

65%

Notice: The above data are average values, and could be obtained within 3 charge / discharge cylcles.These are not minimum values.