Newmar Power - 1-3-70 Battery Isolator
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Optimized Battery Charging for Marine Environments
The Newmar 1-3-70 Battery Isolator is a robust and efficient solution designed to manage the charging of multiple batteries onboard marine vessels. By enabling automatic charging from one or two alternators, this isolator ensures each battery is charged according to its needs without the risk of overcharging or discharging into another battery. Ideal for 12-, 24-, or 36-volt negative ground DC systems, this isolator is perfect for various marine applications.
General Description
Built for durability and reliability, the Newmar 1-3-70 Battery Isolator features conservatively rated diodes and a rustproof anodized aluminum heat sink case. This heavy-duty construction ensures long-term performance and protection against harsh marine conditions. By preventing the discharge of one battery into another, it maintains optimal charge levels and extends battery life.
Key Features
- Efficient Multi-Battery Charging: Allows automatic charging of multiple batteries from one or two alternators.
- Prevents Battery Dumping: Ensures no discharge from one battery to another, maintaining optimal charge levels.
- Durable Construction: Rustproof anodized aluminum heat sink case and conservatively rated diodes for long-lasting use.
- Versatile Compatibility: Suitable for systems up to 48 volts DC, negative ground.
- Complete Installation Kit: Includes stainless steel mounting hardware and protective terminal covers.
Technical Specifications
- Alternator Sources: 1
- Battery Banks: 3
- Max. Amperage Input Capacity: 70 A
- Stud Terminal Size: 6mm
- Dimensions (L x W x H): 3.25" x 4.5" x 3.1"
- Weight: 2 lbs.
- Operating Temperature: -40 to +80°C
- Duty Cycle: Continuous rating to 50°C; derates linearly to 70% at 80°C
- Temperature Rise: 5°C at full rated current (mount vertically for optimum cooling)
- Voltage Drop: 0.7V at 50% load, 0.9V at full load
Installation and Use
The Newmar 1-3-70 Battery Isolator is designed for straightforward installation and reliable operation. It should be mounted vertically for optimal cooling. The provided stainless steel hardware ensures secure attachment, and the protective terminal covers enhance safety and longevity.
Shipping
We ship worldwide from the United States. Rates are calculated at checkout based on destination and package weight. Some items include free shipping, which will show automatically. Not every product is eligible for international shipping; checkout will confirm eligibility. We do not ship to PO Boxes except through USPS, and not all packages qualify.
Processing and dispatch
Most orders are verified, packed, and handed to the carrier within 1 to 2 business days. Some products may need extra handling time or ship directly from the manufacturer. For certain international orders, inventory transfers between warehouses may add time. If any delay is expected, we will let you know the dispatch date.
Delivery and tracking
Deliveries are handled by trusted carriers such as USPS, UPS, FedEx, and DHL. Estimated arrival times appear at checkout and depend on your location and the service you choose. These are estimates and can be affected by customs or carrier disruptions. A shipping confirmation with a tracking link is emailed when your order ships, and tracking may take up to 24 hours to update. You can also view tracking in your account.
Duties, taxes, and support
International customers are responsible for any customs duties, taxes, and fees charged by the destination country. If these charges are refused and a shipment returns to us, the carrier’s return cost and any re-entry customs fees will be deducted from the refund. If your order is late or you need help, contact cs@qualityboatparts.com and we will assist you.
Quality Boat Parts is a reseller. Many items include a manufacturer’s warranty, and all warranty service is handled directly by the manufacturer. We do not manage or administer warranty claims on behalf of customers.
Warranty terms, coverage, and duration are set by each manufacturer. Issues involving defects, repairs, or replacements must be addressed with the manufacturer’s support team. When available, the warranty period is listed on the product page. If it is not shown, contact us or the manufacturer for details before purchasing.
To start a claim, the customer must contact the manufacturer and follow their process. Keep your proof of purchase and original packaging, and register the product if the manufacturer requires it, as these are often needed for warranty service.
We are happy to help you find the right contact or documentation, but we cannot decide outcomes or intervene in claim resolutions. For guidance, email cs@qualityboatparts.com.