The Digital Voltage Sensing Relay (DVSR) is a remarkable device that enables charging a second battery bank from a single charging source. When the voltage of the charged bank rises enough, the DVSR kicks in to charge the 2nd battery bank. Once charging stops and the voltage drops, it automatically isolates the battery banks, making sure engine start batteries stay fully charged. With digital circuitry, it offers excellent reliability and ultra - low power consumption. The digital enhancements bring in remote sensing circuitry. You can optionally connect it to the ignition switch, providing the same function as a single - sense VSR and zero power consumption when the engine is off. When used with a storage mode switch (switch in open position), it has zero standby current draw. Key benefits include: safely charging two or more independent battery banks from one source like an alternator or charger; charging engine starting batteries first before combining the auxiliary bank; protecting start batteries from domestic loads; isolating electronics from starter motor electrical surges; easy 3 - wire installation without altering alternator wiring; no voltage drop compared to diode isolators; ignition protection; surface or panel mounting; replacing previous models 710 - 125A and 710 - 125A - DS; multi - voltage operation with auto - selection between 12 and 24V DC; low power consumption and enhanced performance from digital circuits; and an option for remote status LED output.
Using this Digital Voltage Sensing Relay (DVSR) is straightforward. First, connect it to your charging source, like an alternator or battery charger, and the battery banks following the 3 - wire connection instructions. This way, the alternator wiring remains intact. When the engine runs, the DVSR will start charging the engine starting battery first. Once its voltage rises enough, it'll start charging the auxiliary battery bank. When the engine stops and the voltage drops, the DVSR will automatically isolate the battery banks. A few things to note. Make sure the storage mode switch is in the open position if you want zero standby current draw. Also, since it's ignition - protected, there's no need to worry about ignition - related issues. For maintenance, keep it clean and dry. Check the connections regularly to ensure they're tight. If you face any problems, look at the remote status LED output for clues on the relay's status. Overall, this DVSR is a reliable choice for your battery charging needs.
