Blue Sea Systems 7608 BatteryLink 20A Battery Charger + 170A ACR, 12V DC 2-Bank

The Blue Sea Systems 7608 BatteryLink combines a 20A multistage battery charger with an integrated 170A Automatic Charging Relay (ACR) so you can keep two isolated 12V battery banks charged both at the dock and underway. Plug into 100-240V AC shore power for 3-stage charging, then rely on the built-in ACR to share alternator output between the start and auxiliary banks once you leave the dock. Battery temperature compensation, start isolation, and emergency parallel combine to protect your electronics and your batteries.

Specifications

• Brand: Blue Sea Systems
• Manufacturer Part Number: 7608
• DC output current: 20A
• Nominal output voltage: 12V DC
• Integrated ACR continuous rating: 170A
• Output connections: 2 positive, 1 negative
• AC input: 100-240V AC, 50/60 Hz
• Charge stages: 3-stage (multistage)
• Typical float voltage: 13.5V DC
• Typical absorption voltage: 14.4V DC
• Operating current (no AC power): 10 mA
• ACR combine voltage: 13.0V (2 min) and 13.5V (30 sec)
• ACR open voltage: 12.75V (30 sec) and 12.35V if voltage is rising
• Plug style: NEMA 5-15P
• Compatible battery types: AGM, Flooded, TPPL
• Recommended minimum battery capacity: 100Ah (20h rate) per bank
• Recommended maximum battery capacity: 400Ah (20h rate) total of both banks
• Temperature sensor 1820 included
• LED remote indicator included
• Weight: 6.75 lb
• Warranty: 5 years

Fitment

Universal 12V DC dual-bank marine system. Suited to boats running two isolated banks (start and auxiliary) with a combined capacity of 100Ah to 400Ah at the 20-hour rate.

Frequently Asked Questions

What is the Blue Sea Systems 7608 BatteryLink? The Blue Sea Systems 7608 BatteryLink is a marine battery management unit that pairs a 20A multistage 12V DC battery charger with an integrated 170A Automatic Charging Relay (ACR) to charge and manage two isolated battery banks.

How many battery banks can the 7608 charge? The 7608 charges two isolated 12V DC battery banks, with two positive output connections and one negative connection.

What is the charging output of the 7608? It delivers 20A of DC charging output at a nominal 12V DC using a 3-stage charging profile.

What does the integrated 170A ACR do? The integrated 170A Automatic Charging Relay shares DC power from the alternator between the start and auxiliary batteries when you are away from the dock, combining the banks to charge both while protecting the start battery.

What AC input does the 7608 accept? The 7608 accepts 100-240V AC at 50/60 Hz and uses a NEMA 5-15P plug, so it works with standard shore power.

Which battery types are compatible with the 7608? The 7608 is compatible with AGM, Flooded, and TPPL battery types.

What battery capacity does the 7608 support? Blue Sea Systems recommends a minimum of 100Ah (20h rate) per bank and a maximum of 400Ah (20h rate) total across both banks.

What are the typical charging voltages? Typical float voltage is 13.5V DC and typical absorption voltage is 14.4V DC.

Does the 7608 protect sensitive electronics? Yes. Start isolation protects sensitive electronics from voltage sags and spikes during engine starting.

Does the 7608 include battery temperature compensation? Yes. Battery temperature compensation prolongs battery life and is enabled by the included temperature sensor 1820.

Can the 7608 jump start a low battery? Yes. The emergency parallel feature allows remote combining of both batteries to jump start the engine if the start battery is low.

What is the warranty on the 7608? The Blue Sea Systems 7608 carries a 5 year warranty.