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Cross Charge Diode
Simple Two Battery Charging
Charging a second battery can be as simple as connecting a diode between them. When the primary battery is charged, the secondary battery is also charged through the Cross Charge Diode, CCD. The Ample Power CCD is rated for 200 Amps continuous, allowing it to be used with virtually all alternators. It is rated for 12 and 24 Volt systems.
A dedicated battery can be used to charge any secondary battery. Many noise problems can be eliminated by using a small sealed battery for electronics. A normal starter battery can be maintained via the CCD, and prudent offshore sailors and ocean racers may elect to have an emergency starter battery also maintained with a CCD.
A small battery to supply power to bilge pumps assures that there is power in an emergency, even if the house bank is completely discharged.
Dimensions and Mounting
The Cross Charge Diode is 5.5 inches, (140 mm) long by 4.75 inches, (121 mm) wide. It stands 2.75 inches, (70 mm) off its mounting surface. It can be mounted in any orientation, however, it cools better with the fins vertical. A cooling fan may be required if mounted in a limited space. The housing is marine grade aluminum which has been black anodized.
Be sure that the mounting surface can withstand the maximum operating temperature.
Cross Charge Diode, 12/24V, 200 Amp #1029