Blue Sea SI-Series Automatic Charging Relay

The lower power (120 Amp) BlueSea 7610 SI Series Automatic Charge Relay (ACR) is great for smaller boats that have a dedicated engine battery and house bank. The ACR protects sensitive electronics by temporarily isolating house loads from the engine circuit during engine cranking, but combines them when charging for worry free operation.

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Pros Cons
Allows manual paralleling of battery banks
500 Amp continuous rating
Very little current draw while engaged
No diode voltage drop associated with cheaper combiners
Senses charging on either battery bank
Optional start and engine isolation
High engine cranking current rating (10 seconds at 2,500 Amps)
Includes a convenient ML-Series remote control switch
3/8 inch studs does not easily accept ratcheting wrench
Large footprint compared to a standalone solenoid

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