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| Power-Sonic Model PS-445 Sealed Lead-Acid Battery
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Order Part Number:
PS-445
| General
Specifications |
| Dimensions: |
| Length |
1.89 inches |
48 millimeters |
| Width |
2.09 inches |
53 millimeters |
| Height |
3.70 inches |
94 millimeters |
| Height over Terminals |
3.86 inches |
98 millimeters |
| Approximate Weight |
1.43 pounds |
0.65 kilograms |
| Terminals: |
Quick Disconnect Tabs
(0.250"x0.032") |
| Case: |
ABS Plastic |
| Electrical
Specifications |
| Nominal Voltage: |
4 Volts (2 cell in series)
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| Nominal Capacity:
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| 20 hour rate |
(225mA to 3.50 volts) |
4.5 AH |
| 10 hour rate |
(420mA to 3.50 volts) |
4.2 AH |
| 5 hour rate |
(765mA to 3.20 volts) |
3.825 AH |
| 1 hour rate |
(2700mA to 3.00 volts) |
2.7 AH |
| Energy Density (20 hour rate)
|
1.23 Watt-hours/cubic inch |
75.3 Watt-hours/l |
| Specific Energy (20 hour rate)
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12.6 Watt-hours/pound |
37.7 Watt-hours/kg |
| Internal Resistance (Fully Charged
Battery) |
15 milliohms (approx.)
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Charging :
Cycle Applications: Limit initial current to 900mA. Charge until battery
voltage (under charge) reaches 4.80 to 5.00 volts at 68º F (20º C).
Hold at 4.80 to 5.00 volts until current drops to approximately 45mA. Battery
is fully charged under these conditions, and charger should either be
disconnected or switched to "float" voltage. "Float" or "Stand-by Service":
Hold battery across constant voltage source of 4.50 to 4.60 volts continuously.
When held at this voltage, the battery will seek its own current level and
maintain itself in a fully charged condition.
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