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Item #:
737512
Blue Sea Systems Add-A-Battery Kit 120A Dual Circuit System, 7650
Item #:
737512
XCD 538
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Order now and get it around Tuesday, August 18
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What Stands Out
Easy Installation
The Blue Sea Systems 7650 kit simplifies the process of adding a second battery, making it accessible for all boat owners with minimal technical skills.
Smart Isolation
Equipped with advanced isolation technology, this kit prevents battery drain while ensuring both batteries are charged efficiently, enhancing overall vessel reliability.
Durable Design
Crafted from high-quality materials, the add-a-battery kit delivers exceptional durability and resistance to harsh marine environments, ensuring long-term performance and value.
Product Details
| Input Voltage | 12 Volts |
| Current Rating | 120 Amps |
| Amperage | 120 Amps |
| Connector Type Used on Cable | Stud Terminal |
| Number of Ports | 2 |
| Item Dimensions D x W x H | 2"D x 3.88"W x 3.5"H (5.1 x 9.9 x 8.9 cm) |
| Item Weight | 1.5 Pounds (680 grams) |
| Specification Met | Etl, Ip54 |
| Color | Black |
| Brand | Blue Sea Systems |
| Mfr Part Number | 7650-BSS |
| Global Trade Identification Number | 00632085076504 |
| UPC | 632085076504 |
| Manufacturer | Blue Sea Systems |
| Model Number | 7650 |
| Item Type Name | Blue Sea 7650 Add-A-Battery |
| Built-In Media | Blue Sea 7650 Add-A-Battery |
| Unit Count | 1.0 Count |
| Product Dimensions (L x W x H) | 2"D x 3.88"W x 3.5"H (5.1 x 9.9 x 8.9 cm) |
Dangerous Goods
To avoid the delay in customs clearance process for Dangerous Goods, the shipment shall be opened at our warehouse facility to check the severity of hazardous components. Please see the list of Dangerous goods here.
Who Should Buy?
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Boating Enthusiasts
Ideal for boaters needing an efficient way to manage multiple batteries without complex wiring systems.
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RV Owners
Perfect for RV users to ensure reliable power supply while utilizing solar or backup battery systems.
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DIY Installers
Great for users who prefer simple, user-friendly installation for adding extra batteries to their setups.
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High-Energy Users
Not suitable for users with heavy power demands requiring specialized battery management systems.
Product Description
Blue Sea Systems Add-A-Battery Kit 120A Dual Circuit System, 7650
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Customer Questions & Answers
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Question:
What is the main purpose of the Blue Sea Systems 7650 Add-A-Battery Kit?
Answer: The primary purpose of the Blue Sea Systems 7650 Add-A-Battery Kit is to provide a safe and reliable method for adding another battery to your system. This kit allows you to connect an additional battery for auxiliary power, which can be incredibly useful for boating enthusiasts or RV owners who need extended power for lights, electronics, or appliances. By using this kit, you ensure that both batteries can charge properly while minimizing the risk of draining the starting battery, thus maintaining a dependable power source for your activities. -
Question:
How does the Blue Sea Systems Add-A-Battery Kit work?
Answer: The Blue Sea Systems Add-A-Battery Kit utilizes a dual battery management system, which includes a battery isolator to separate the batteries for optimal performance. When the engine is running, both batteries charge simultaneously, but when the engine is off, the isolator prevents the auxiliary battery from draining the starting battery. This system ensures that you have a backup power source ready without compromising your vehicle or boat's primary power needs. It's particularly beneficial during long trips when power consumption is high. -
Question:
Is installation of the Blue Sea Systems 7650 Add-A-Battery Kit difficult?
Answer: Installation of the Blue Sea Systems 7650 Add-A-Battery Kit is designed to be straightforward, particularly for those familiar with basic electrical systems. The kit includes all necessary components and detailed instructions for connecting the batteries and isolator. Proper installation ensures that both batteries function correctly, improving overall performance. For those less experienced with electrical installations, it may be advisable to consult a professional, especially in scenarios involving complex battery systems in boats or RVs. -
Question:
Can I use the Add-A-Battery Kit for solar applications?
Answer: Yes, the Blue Sea Systems 7650 Add-A-Battery Kit can be utilized in conjunction with solar panels to create a more versatile power system. The additional battery can store energy generated from solar panels, enhancing your off-grid capabilities. It is particularly useful in mobile applications where you need independent power sources for appliances or electronics away from the grid, such as during camping trips or in boats outfitted for extended journeys. -
Question:
What types of batteries are compatible with the Blue Sea Systems 7650 Add-A-Battery Kit?
Answer: The Blue Sea Systems 7650 Add-A-Battery Kit is designed to work with various types of lead-acid batteries, including standard starting batteries and deep-cycle batteries. It's important to select batteries that are compatible in ratings and condition to ensure optimal performance. For the best results, mixing deep-cycle with starting batteries should be done with care, keeping in mind the differences in discharging and charging capabilities to maintain a balanced power system. -
Question:
What can I power with the additional battery from this kit?
Answer: The additional battery added through the Blue Sea Systems 7650 Add-A-Battery Kit can power a range of devices, including lights, radios, GPS systems, and other electronic appliances. This is particularly valuable for RV owners and boating enthusiasts who require reliable power for various in-use appliances during their adventures. By managing power needs effectively, users can enjoy their activities without concern for draining the primary power source. -
Question:
Does the kit come with everything needed for installation?
Answer: Yes, the Blue Sea Systems 7650 Add-A-Battery Kit comes with all necessary components for installation, which includes the battery isolator and wiring required to set up the battery system. This comprehensive package ensures that users are equipped with what they need to create an efficient power management system. For optimal performance, following the included instructions carefully during installation is crucial to ensure each component's compatibility and functionality. -
Question:
Can I monitor the charge levels of both batteries with this kit?
Answer: While the Blue Sea Systems 7650 Add-A-Battery Kit does not include a built-in battery monitor, you can easily add external monitoring devices to check the charge levels of both batteries. Monitoring tools can be integrated into your system, allowing you to keep track of the voltage levels and ensure each battery is performing optimally. This is especially useful in ensuring that your auxiliary battery is charged and ready for use, particularly during extended trips. -
Question:
What maintenance is required for the battery system with this kit?
Answer: Routine maintenance for the battery system utilizing the Blue Sea Systems 7650 Add-A-Battery Kit includes checking the battery terminals for corrosion, ensuring connections are tight, and regularly testing the batteries' voltage levels. Maintaining a clean and secure connection ensures efficiency in power transfer between batteries. Additionally, monitoring water levels in flooded lead-acid batteries is vital to prevent sulfation and maintain battery health, prolonging overall system longevity. -
Question:
Where can I buy the Blue Sea Systems 7650 Add-A-Battery Kit?
Answer: You can purchase the Blue Sea Systems 7650 Add-A-Battery Kit through Ubuy in Anguilla. Ubuy offers a convenient online shopping experience, allowing you to explore various products and find the exact kit you need for your electrical management system. With detailed listings and customer reviews, Ubuy can help you make an informed decision about your purchase.
BlueSeaSystems Battery Switches 7650 Editorial Review
The Blue Sea Systems Add-A-Battery Kit is a high-quality product that offers great value for the price. It is versatile and can be used on trucks, boats, and hot rods. The installation process is easy, thanks to the clear and detailed instructions provided. With this kit, users can add a second battery to their vehicle, allowing for independent operation of various accessories and ensuring that there is always a backup in case one battery fails. The kit includes a switch with three positions - on, off, and combine - which allows users to control the charging and usage of the batteries. Customers have reported that the kit performs as expected, with both batteries running independently until charging is needed. Users have also praised the peace of mind that comes with having a backup battery and the protection it offers to the vehicle's electronics when starting the engine. Overall, the Blue Sea Systems Add-A-Battery Kit is a reliable and easy-to-install solution for adding a second battery to your vehicle. Whether you need it for a boat or a truck, this kit will not disappoint.
Customer Reviews & Ratings
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Pros
- Excellent quality
- Versatile and suitable for different vehicles
- Easy installation with clear instructions
- Provides peace of mind with backup battery and protection for electronics
Cons
- No negative aspects mentioned in the reviews
Platform Trust & Buyer Confidence
MA
Mohammad
Verified buyer
“Excellent quality and original too,when ubuy send original things I will appreciate that ,I very satisfied thank you”
23 July 2026 · via Trustpilot
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Chitra
Verified buyer
“The order and delivery progress was communicated very well. Package arrived within the estimated time. Products arrived as expected in good condition.”
22-Jul-26 · via Trustpilot
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kund
Verified buyer
“Good supply of products. Safe payment methods, and shipment worldwide! Genuine products.”
23-Jul-26 · via Trustpilot
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Onesi
Verified buyer
“Was my first time buying a product from Ubuy, but I found it so helpful. This is reliable. Gonna place a new order!”
22 July 2026 · via Trustpilot
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SAO JOHN
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“Ubuy is a great online platform to buy stuff. Reliable, fast delivery time and great value for money. I've been using Ubuy online shopping platform for three years now and will continue to do so.”
23 July 2026 · via Trustpilot
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- Limitations : For products shipped internationally, please note that any manufacturer warranty may not be valid; manufacturer service options may not be available; product manuals, instructions, and safety warnings may not be in destination country languages; the products (and accompanying materials) may not be designed in accordance with destination country standards, specifications, and labeling requirements; and the products may not conform to destination country voltage and other electrical standards (requiring use of an adapter or converter if appropriate). The recipient is responsible for assuring that the product can be lawfully imported to the destination country. When ordering from Ubuy or its affiliates, the recipient is the importer of record and must comply with all laws and regulations of the destination country.
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XCD 538
Order now and get it around Tuesday, August 18
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Features & Benefits
- Prevents unintended discharge of engine start battery
- Simple way to control charging and battery switching
- Dual Circuit Plus Battery Switch simplifies switching
- ACR Automatic Charging Relay automates charging
- Shares charge between two batteries efficiently
- Tin-plated copper studs for maximum conductivity and corrosion resistance
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