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Blue Sea Systems 7610 SI-ACR Automatc Charging Relay - 12/24V DC / 120A

Brand: Blue Sea Systems

4.8 318 ratings

| 82 answered questions

Amazon's Choice in Boat Battery Chargers by Blue Sea Systems

-20% $90.69

List Price: $113.14

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Current Rating	120 Amps
Brand	Blue Sea Systems
Operation Mode	Auto
Coil Voltage	24 Volts
Contact Current Rating	120 Amps

About this item

Protects sensitive electronics by temporary isolation of house loads from engine circuit during engine cranking
12/24 volt auto ranging voltage input
Hermetically sealed contacts/vaporproof
Ignition protectedâsafe for installation aboard gasoline powered boats
Supports high-output alternators up to 120 Amperes

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From the manufacturer

Blue Sea Systems Automatic Charging Relays (ACRs)

Features

Automatically combines batteries during charging, isolates batteries when discharging and when starting engines

Protects sensitive electronics by temporary isolation of house loads from engine circuit during engine cranking
Designed for 12 or 24 volt systems
12/24 volt auto ranging voltage input
Hermetically sealed contacts/vaporproof
Ignition protected—safe for installation aboard gasoline powered boats
Supports high-output alternators up to 120 Amperes
Dual sensing

Optional Features

Start Isolation allows temporary isolation of House loads from Engine circuit during engine cranking to protect sensitive electronics from sags and spikes
Remote LED remotely indicates ACR states - requires optional LED

WARNING: California’s Proposition 65

Product Description

GREAT PRODUCT

Product information

Technical Details

Item Package Dimensions L x W x H

‎8.86 x 6.34 x 2.99 inches

Package Weight

‎0.54 Kilograms

Item Dimensions LxWxH

‎4 x 6 x 9 inches

Item Weight

‎0.01 Ounces

Brand Name

‎Blue Sea Systems

Warranty Description

‎LIMITED WARRANTY

Model Name

‎AUTOMATIC CHARGING RELAY "ACR"

Material

‎Tinned Copper

Suggested Users

‎boating

Number of Items

‎1

Manufacturer

‎Blue Sea Systems

Part Number

‎7610

Style

‎12/24v Si Acr

Included Components

‎AUTOMATIC CHARGING RELAY "ACR"

Additional Information

ASIN

B000OTIPDQ

Customer Reviews

4.8 318 ratings

4.8 out of 5 stars

Best Sellers Rank

#50,727 in Sports & Outdoors (See Top 100 in Sports & Outdoors)
#10 in Boat Battery Chargers

Date First Available

October 1, 2001

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Customer reviews

4.8 out of 5

318 global ratings

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abdulrahaman

Very good material

Reviewed in the United States 🇺🇸 on July 2, 2023

Very good material

Reviewed in the United States 🇺🇸 on June 15, 2023

Verified Purchase

Product is as advertised

Helpful

It works!

Reviewed in the United States 🇺🇸 on October 14, 2022

Verified Purchase

The product is well made and simple in its installation. You have to be somewhat competent in assembling the associated electrical cabling. Installed it in a dual battery system boat and it works perfectly. Follow the directions and it will be a quick project. Yes, I will purchase again should the situation arise.

Helpful

Perfect for a Transit Van camper conversion

Reviewed in the United States 🇺🇸 on April 13, 2021

Verified Purchase

First - the cover did crack weird making room for the wiring connections, but OK. I have it in a Ford Transit 350HD Van, camper conversion, between two AGM starter batteries and two AGM solar batteries powered by solar panels. It works beautifully. I chose not to connect the remote starter cut off but wired the remote indicator to a LED to keep an eye on what it was doing. All four batteries will charge and discharge with the alternator or solar regulator or the 12V smart shore power charger depending where the appropriate charge and direction is coming from. It always disconnects the starter batteries when Vamping off the grid at the set voltage to insure start power at night and will reconnect in sunshine to restore appropriate AGM charging. Sweet, just sweet.

3 people found this helpful

Helpful

Robert-S

Cool little battery charge/discharge relay, much better than the old diode isolators.

Reviewed in the United States 🇺🇸 on April 13, 2016

Verified Purchase

Installed recently, so far so good, super-solid build quality. use to connect a house battery (with connected solar module) to engine battery so either can pass power back and forth. The unit is very simple with two main power lugs (one for each 12V battery) a spade lug for ground sensing (required) another lug for start bypass (optional) (disconnects the house battery during engine start) and a lugs for an optional remote 12V LED status indicator (unit has integrated LED indicator).

Premise of operation: Unit connects battery sources together if one *or* the other have a higher voltage (its a relay so when connected both batteries are wired together) Example, I have the engine battery and alternator and a house battery with solar, I want the alternator to charge the starting and house battery but not allow house loads to pull from the starting battery when engine is off (typical configuration) however, I also have a solar PV module that produces surplus power so charging the starting battery with excess power is preferred. So the house battery connects to one terminal, the start battery to the other, if the engines running the start and house battery link, if the engine is off the start battery is disconnected from the house battery *unless* the solar output pushes the house battery voltage above 12.8v, then the relay will close and link both batteries. Once the sun goes down, the relay opens separating the batteries again.

154 people found this helpful

Helpful

In the Mountains

Depends on your situation and battery type

Reviewed in the United States 🇺🇸 on November 11, 2019

Verified Purchase

First, the build quality of this unit is excellent. No issues there. Unfortunately, the usability of the Si-ACR is very limited depending on your setup and battery type.

If you are running only FLA, AGM or Gel batteries, and plan to have this relay as the only connection between the two, it works great. It is consistent and works as intended.

My two major issues:

1- These relays do not work as intended with LiFePo4/Lithium batteries. The relay reads the higher voltage of the Lithium battery as a "charge source" and always stays on. This defeats the purpose of having a relay. In order for this relay to be effective with modern Lithium batteries and charging systems, there needs to be a selectable voltage threshold for connect/disconnect.

2- In my setup, I have a manual disconnect switch. This allows me to completely disconnect the charging source from the auxiliary battery. When the switch is "off", the Si-ACR continuously flashes the LED warning light, indicating that there is only one battery connected. This feature is a waste of battery charge, and the LED will burn out before too long. The unit needs a "test" button that will show this flashing light; having it run constantly is a nuisance.

All in all, it's a decent relay, but lacks modern functionality for Lithium batteries, as well as the ability to adjust to different configurations. Three stars.

42 people found this helpful

Helpful

Vlad knows

Great way to keep 2 6V golf cart battery bank ...

Reviewed in the United States 🇺🇸 on January 22, 2016

Verified Purchase

Great way to keep 2 6V golf cart battery bank inside truck camper charged while on the road or topped off between camping spots. Additionally, when truck is parked and the solar panel on camper charges camper batteries to above the cut-in voltage, the ACR will connect the truck battery and it gets charged from the sun. I'll never have to worry about the truck battery being dead after it sits too long.

Only con if there is one, is that it can't be manually engaged like some others, with similar amperage rating. This function would be useful to jump start the truck off the camper battery bank in case the truck battery fails or is drained somehow. There are others with similar capacity rating that have this feature.

Truck has a 130 A alternator, and I used 2/0 cable to connect the camper battery bank. I also installed additional grounds of same size from alternator to chassis. overkill? maybe...

One person found this helpful

Helpful

Jason

Fantastic

Reviewed in the United States 🇺🇸 on October 30, 2021

Verified Purchase

Works great! I did not realize the unit has the status LED indicator built in, so I bought the LED to hook into the REMOTE spot and didn't need it. I always trust Blue Sea equipment for all my auto, camper, and other 12V projects!

Helpful

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Amazon Customer

Nice

Reviewed in Canada 🇨🇦 on June 3, 2023

Verified Purchase

Nice

PHM69

Works beautifully

Reviewed in Canada 🇨🇦 on July 11, 2020

Verified Purchase

I bought this to replace a defunct Balmar Duo-Charge (a very patient Balmar tech ran through the multiple LED programs over the phone, diagnosed it was not functional, and recommended the Blue Sea ACR.
It was relatively easy to install, once I bought 100A fuses, one for each terminal, just to be safe (as per the Blue Sea instructions). It's elegant, needs no operator input and keeps my batteries in good shape with a solar feed when the sun's out and the engine alternator when it's running. Highly recommended.

2 people found this helpful

Jonesy

A must for dual battery banks

Reviewed in Canada 🇨🇦 on May 6, 2020

Verified Purchase

ACRs are a large step above common isolaters and this is the good one. Easy to install, be sure to plan for the appropriate cables and fuse blocks between your banks and this unit.

Amazon Kunde

Nicht funktionieren

Reviewed in Germany 🇩🇪 on December 12, 2022

Verified Purchase

Ich habe zwei Monate gearbeitet und das Licht blinkt, aber der Strom geht nicht durch.

Translate review to English

Navneet singh

Love it..

Reviewed in Canada 🇨🇦 on October 4, 2019

Verified Purchase

Always good..

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Blue Sea Systems 7610 SI-ACR Automatc Charging Relay - 12/24V DC / 120A

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Blue Sea Systems Automatic Charging Relays (ACRs)

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Blue Sea Systems ML-ACR 24V DC 500A Automatic Charging Relay

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MaySpare 12V 140Amp Voltage Sensitive Relay VSR

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Blue Sea Systems 7610 SI-ACR Automatc Charging Relay - 12/24V DC / 120A

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From the manufacturer

Blue Sea Systems Automatic Charging Relays (ACRs)

Features

Optional Features

Product Description

Product information

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Additional Information

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Store (Offline)

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Videos for related products

Blue Sea Systems ML-ACR 24V DC 500A Automatic Charging Relay

Videos for related products

MaySpare 12V 140Amp Voltage Sensitive Relay VSR

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