KeyLine Chargers Dual Battery Isolator Kit 12V – 140A VSR
- £153.59
- £153.59
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Description
xEfficient, compact dual battery power with KeyLine Chargers
Meet the KeyLine Chargers Dual Battery Isolator Kit, a compact 12V solution designed to balance power between two batteries with precision. This smart unit connects your primary and auxiliary sources in a seamless, low-resistance path so you won’t experience startup hiccups or noticeable dimming when accessories run. Its small 2.6” x 2.6” x 2” footprint makes it easy to fit under the hood or as part of a battery relocation setup, giving you flexible installation options without compromising space or aesthetics.
Smart Voltage Sensitive Relay (VSR) for reliable charging
At the core is a 12V VSR that automatically engages at 13.3V and disengages at 12.8V. In practical terms, your starting battery stays ready for cranking while the auxiliary battery receives charge when conditions permit. This behavior suits a range of setups—from marine and boat applications to work trucks and off-grid systems—offering a hands-off approach that can help reduce unexpected drainage and maintain ready power when you need it.
Rugged, weather-ready design
Built to endure demanding environments, the kit is IP65-rated for water, dust, and vibration. The solid-state design emphasizes reliability across automotive, RV, UTV, and marine contexts. Whether you’re navigating rough trails, casting off at dawn, or heading to the job site, you can rely on steady power delivery when required.
All-in-one kit for straightforward DIY installation
The package includes a complete set of components for a hassle-free install: a 140 Amp VSR, 20 ft red power cable, 2 ft black ground cable, two positive marine-type brass terminals, one negative brass terminal, tinned copper lugs, heat shrink tubing, cable ties, and clear step-by-step instructions. Connect the power in, power out, and you’re ready to go—designed for DIYers of all skill levels seeking a clean, professional setup.
Peace of mind with warranty and guarantee
KeyLine Chargers backs this kit with a 12-month warranty and a 30-day money-back guarantee. The combination of smart charging, compact design, and rugged construction offers a flexible option for keeping two batteries coordinated and ready when you need them.
Key benefits at a glance
- Automatic VSR control reduces the risk of battery drain.
- Compact size fits tight engine bays and relocation kits.
- IP65-rated for water, dust, and vibration resistance.
- Includes a complete wiring kit for straightforward DIY installation.
- Suitable for marine, truck, RV, and off-grid applications.
Kit contents
- 140 Amp VSR relay
- 20 ft red power cable
- 2 ft black ground cable
- 2 x positive marine-type brass battery terminals
- 1 x negative brass terminal
- Tinned copper lugs
- Heat shrink tubing
- Cable ties
- Step-by-step instructions
FAQ
Q: What does the KeyLine Dual Battery Isolator Kit do?
A: It automatically balances charging between two batteries using a 140A VSR, helping prevent drain on the starting battery.
Q: Is installation difficult for DIY enthusiasts?
A: The kit includes all hardware and step-by-step instructions for straightforward, under-hood wiring and test checks.
Shipping & Return
xReturns Policy
You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
Shipping
We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.
Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.
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