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Dual Independent Power Sources to Protect Starter Battery: KEMIMOTO 12V 140A isolator separates the starter battery and auxiliary battery, ensuring independent power supply: the starter battery exclusively powers the engine (avoids startup failure), while the auxiliary battery supports extra devices (lights, air conditioners, GPS). Prevents auxiliary equipment from draining the starter battery—no more "dead battery" when starting your vehicle
Smart Voltage-Sensitive Charging & Battery Balance: Equipped with a voltage-sensitive relay (VSR) for intelligent charging: it prioritizes charging the starter battery first, and automatically switches to charge the auxiliary battery once the starter battery reaches 13.3V (full charge). When the starter battery drops to 12.8V (low power), the isolator cuts off the auxiliary circuit to protect the starter battery. Balances dual-battery power and extends battery lifespan
Weather-Resistant Design & Hassle-Free Installation: Built with waterproof, dustproof, and vibration-proof housing—adapts to harsh outdoor conditions (muddy trails, bumpy off-roading, marine humidity) without performance loss. The kit includes all essential installation accessories for quick setup. Reminder: If additional hardware is needed due to your vehicle’s specific structure (e.g., unique mounting positions), you may need to prepare it separately
Complete Accessory Kit for One-Stop Installation: The kit comes with practical components to support the isolator system: 1 smart battery isolator, 1 digital dual voltmeter (real-time monitors both battery voltages), 1 relay (controls circuit on/off), 3 marine battery terminals (for load/charger connection), 2 red cables (300mm), 1 black ground cable (600mm), 1 green-grey cable (2350mm), 3 female spade connectors, and 10 cable ties—meets all basic installation needs
Wide Compatibility for Dual-Battery Vehicles & Popular UTV Models: This isolator kit is tailored for vehicles with dual batteries, covering UTVs, ATVs, RVs, trucks, marine boats, and campers. It fits mainstream UTV models: Compatible with Polaris (Ranger, General), Can-Am (Maverick, Defender), Pioneer 1000, Talon 1000, Cfmoto (Zforce, Uforce), and Kawasaki. Reminder: A suitable second battery (mounted near the starter battery) is required for use (not included in the kit)

Product description

KEMIMOTO Dual Battery Isolator & Voltmeter Voltage Monitor & Relay Kit

Warm Reminder

-The isolator is designed for lead-acid batteries. Lithium battery is NOT available.

-We assume you have purchased a suitable second battery and mounted it near the start battery on your vehicle.

-Our supplied accessories may be not enough due to your actual situation. You need to provide extra hardware yourself to complete the installation

Waterproof Isolator

With a plastic casing and a silicone-sealed internal layer, the battery isolator can withstand extreme weather environments, protecting it from vibration and water damage.

Digital Double Voltmeter

The voltmeter is used to display the voltage of two batteries, so you can monitor the voltage at any time and switch modes as needed

Relay and Socket Kit

The relay controls the opening and closing of the circuit contacts of an electronic circuit. It is easy to install following the instructions.

Functions of Dual Battery Isolator Kit

Function 1: Equalize in charge between two batteries.

Kemimoto battery isolator is used in situations where multiple batteries are required, and its primary purpose is to ensure that the failure of a single battery will not incapacitate an entire electrical system. When the main starting battery is flat, and the auxiliary battery is charged. The two batteries will equalize in charge allowing the engine to start

Function 2: Separate two batteries to work independently

Our battery isolator separates multiple batteries from one another to ensure that a vehicle has access to a backup power source. The isolator prioritizes charging to the starting battery before it starts to charge the auxiliary battery. Accessories like lights and soundbars can be powered independently of the starting battery, ensuring enough power in the starting battery to start the vehicle

Specification of Isolator

Size	67 x 67 x 52mm
Continuous Current Rating	125A
Intermittent Current Rating	140A

Voltage Rating:	DC 12V (Max DC 15V)
Cut in Voltage:	DC 13.3V
Cut Out Voltage:	DC 12.8V

Specification of Relay and Digital Double Voltmeter

Relay--Voltage Rating	DC 12V
Relay--Max Current	40A
Voltmeter--Input Voltage	DC 12V-24V

Voltmeter--Display Range	5V-30V
Voltmeter--LED Digital Display	Blue