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| Power-Sonic Model PS-640 Sealed Lead-Acid
Battery |
Order Part Number:
PS-640-F1
| General
Specifications |
| Dimensions: |
| Length |
2.76 inches |
70 millimeters |
| Width |
1.86 inches |
47 millimeters |
| Height |
4.02 inches |
102 millimeters |
| Height over Terminals |
4.25 inches |
108 millimeters |
| Approximate Weight |
1.95 pounds |
0.90 kilograms |
| Terminals: |
"F" Quick
Disconnect Tabs (0.187"x0.032")
|
| Case: |
High-impact
polystyrene |
| Electrical
Specifications |
| Nominal Voltage: |
6 Volts (3 cell in
series) |
| Nominal
Capacity: |
| 20 hour rate |
(225mA to 5.25 volts) |
4.5 AH |
| 10 hour rate |
(400mA to 5.25 volts) |
4.0 AH |
| 5 hour rate |
(700mA to 5.10 volts) |
3.5 AH |
| 1 hour rate |
(2700mA to 4.50 volts) |
2.7 AH |
| Energy Density (20 hour
rate) |
1.29 Watt-hours/cubic inch |
78.8 Watt-hours/l |
| Specific Energy (20 hour
rate) |
13.8 Watt-hours/pound |
30.0 Watt-hours/kg |
| Internal Resistance (Fully Charged
Battery) |
20 milliohms
(approx.) |
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Charging :
Cycle Applications: Limit initial current to 900mA. Charge until battery
voltage (under charge) reaches 7.20 to 7.35 volts at 68º F (20º C).
Hold at 7.20 to 7.35 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 6.75 to 6.90 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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