Q: What do the characters in the model number mean?
A: Example (SC50-240 SO/72-180/C11) = (SC) Safety Charger, (50) = 5000 watts input power, (240) = 240 volts alternating current input voltage, (SO) = Shut Off, (72-180) = for 72-180 volt nominal voltage battery packs, (C) = Month of March, (11) = Year 2011.
Back to topQ: What is the Automatic Proportional Shut Off?
A: The charger will completely shut off all power when the battery pack is charged. Extra charging time is allowed during the finishing stage proportional to the battery state of charge. A greater time is allowed for a highly discharged battery; a lesser time for a slightly discharged battery.
Back to topQ: What is the Two Stage charger?
A: The first stage of charging is Constant Current or bulk charge of the batteries. This provides a maximum constant current to charge the batteries as quickly as possible, within the charger rating. The second stage is Constant Voltage or the finishing charge. As the battery voltage rises during charge, the Constant Voltage stage will maintain the battery voltage at the preset level, and the battery current will continue to decrease. Two Stage chargers have two adjustment controls: Current and Voltage.
Back to topQ: What is the Current Control for?
A: The Current Control adjusts the maximum first stage current. The Current Control is usually set all the way up unless using an AC service of lesser rating than the charger used. In this case, the Current Control may be turned down to reduce the maximum current drawn from the AC service.
Back to topQ: What is the Voltage Control for?
A: The Voltage Control adjusts the second stage desired battery finishing voltage. The Voltage Control can be set for 72-180 nominal pack voltage.
Back to topQ: Is shipping included in the charger price?
A: Shipping is extra and is usually $35-$50, depending on the charger or transformer weight and the shipping distance.
Back to topQ: How are orders shipped?
A: UPS, with full insurance and tracking. Orders to Hawaii are sent USPS Priority Mail with insurance and delivery confirmation.
Back to topQ: May I order chargers direct from the Russco Factory?
A: Yes.
Back to topQ: How do I pay for a charger?
A: Your personal check mailed to the Merlin address in the contact information is acceptable.
Back to topQ: Do you accept charge cards or PayPal for payment?
A: Not at this time.
Back to topQ: Do you have chargers in stock at all times?
A: We try to, but if not, will build one.
Back to topQ: If I have questions about a charger, who do I contact?
A: Phone or email the Russco Factory listed in the contact information.
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