M-ACR Automatic Charging Relay
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You have 30 days to request a return. All sale items are final sale.
The M-ACR Automatic Charging Relay automatically combines two battery banks during charging and isolates them during discharge or starting to help protect sensitive electronics.
Key Features
- LED light indicates ACR states.
- Designed for dual-battery bank management by automatically combining batteries during charging and isolating during discharge/starting.
- Surface, rear, or front panel mounting options.
- Snap-on cover helps insulate terminal connections to help prevent short circuits.
Product Compatibility
- Dual-battery charging systems (start/house or similar setups).
- Marine battery bank isolation and automatic charging relay applications.
Product Details
- SKU: 661-7601.
- Product type: Automatic Charging Relay (ACR).
- Function: automatically combines two battery banks during charging; isolates batteries during discharge or starting.
- Mounting: supports surface, rear, or front panel mounting options.
- Indicator: LED indicates ACR states.
- Protection: includes a snap-on cover to insulate terminal connections.
- Item weight (variant): 272 grams.
Parts Desk Insights
Best Use Case: Use this ACR to manage charging between two battery banks (such as start and house) so both banks get charged when charging voltage is present, while helping maintain isolation during discharge and engine starting.
Common Issues: If you don’t see expected behavior, verify the wiring polarity and ground, confirm that the ACR is sensing charging voltage on the intended bank(s), and ensure the snap-on cover is installed to protect and insulate terminal connections.
Related Products & Accessories
- Battery Isolators & ACRs - Browse the collection for additional ACRs and battery isolation options.
- Relays & Solenoids - Browse for related relay-based electrical components.
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 1-3 business days.
Special-order items: timeline confirmed after order.
Returns & warranty
Returns & Satisfaction Guarantee
We stand firmly behind the quality of every product we sell. Your confidence matters to us — and we back it with a straightforward 30-Day Satisfaction Guarantee.
If you are not fully satisfied, you may request a return within 30 days of delivery. All returns must receive pre-approval prior to being sent back. Unauthorized returns will not be accepted.
To qualify for a return:
Item must be in new, unused condition
Product must be in its original packaging
All parts, components, hardware, manuals, and accessories must be included
Packaging must be undamaged and suitable for resale
Important:
Electronics are strictly inspected. No returns on open-box electronics. Exceptions may apply only with prior written approval. Any electronic unit that has been installed, powered, activated, or altered may not be eligible for return.
We are serious about product integrity — and equally serious about taking care of our customers. If there is ever a product issue, contact us immediately so we can make it right.
For return authorization, please contact our support team before shipping anything back.