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: Eliminate any power consumption of the battery when the vehicle or boat is not in use, and disconnect the battery safely.

：2 x 10mm (3/8 inch), very easy to install, Tin plated copper studs and nuts ignition protected : used for DC 12-48 V system isolation and protection of electrical systems, can be independent or locked together with other switches. : High-quality battery isolation switches are very easy to install, widely used for car, marine boat, RV, camper, travel trailer, truck, ATV, UTV, battery banks and other devices. : On/Off 2 positions, 275 A continuous at DC 12V, 455 A intermittent at DC 12V, 1250 A momentary at DC 12V. We recommend, for the sake of safety and accuracy, consulting with a technician or a mechanic in choosing the appropriate method before making any purchases.: ABS plastic housing, durable made for safety use, rear cover insulates terminals against any short of circuits, equipped with 4 sets of bolts. These will cost more than the other options due to limited market acceptance.Īpplying one of these three concepts to your alternator will bring about different advantages and will inevitably improve the lifespan and quality of your batteries. Zero Drop Isolators:These isolators are useful in addressing the problem of voltage- dropping.Also, the heat levels will most likely rise, and the currents will split. However, because of the presence of diodes, the voltage is more likely to decrease, which consumes more energy and does not charge batteries quite as quickly. Battery Isolators:Currents will flow more swiftly to the battery.An Automatic Charging Relay allows the current to pass easily from one battery to the next.

The relay will open, and the two batteries will be isolated. When the charge is inactive or overloaded, the voltage will drop to around 12.75V DC. Automatic Charging Relays:Combined voltage and relays that reach over 13V DC will charge two batteries at the same time.There are a few main styles to choose between: Even the best marine batteries can wear down. This benefit is useful in the case of one battery failing and having another battery as an emergency back-up. A Marine Battery Switch can be used to prolong the life of your marine electrical system. Doing so, keeps the batteries isolated when not charging. Here you can learn about Automatic Charging Relays, Battery Isolators, and Zero Drop Isolators.Īutomatic Charging Relays allow two banks on a vessel's alternator to be charged simultaneously from one unit. Blue Sea Systems Tech Tip: Automatic Charging Relays Explained We do recommend consulting with a mechanic or technician in the process of choosing an ACR and its features. One relay will be open, while the other will be closed.Vulnerable products will be shielded by isolated batteries.Batteries are isolated, and the relay is open.Open voltage ranging between 12.25 and 12.75 volts.Combines batteries and closed relays for extended length of time.No present charge charge input loads will not exceed set limit.Batteries will share the present charge. BEP MARINE Remote Operated Motorized Battery Switches 199.99 - 234.99 Compare GUEST Battery Selector Switch, Universal Mount without AFD 42.You will then need to carefully consider which preset ACR settings to choose, followed by the product features. The continuous rating will need to reach levels above the highest alternator output rating, and the intermittent rating will need to be above the biggest load for the battery. This switch is ignition protected and built with high-quality materials for durability and long-lasting performance. It has a capacity of 250 AMPS continuous and 360 AMPS intermittent, making it suitable for medium-duty applications. You will need to take into account the continuous rating and the intermittent rating. The Perko 8501DP Battery Selector Switch is designed for use with 12, 24, and 32 Volt Marine Electrical Systems. When selecting a particular Automatic Charging Relay (ACR), there are many things to consider in order to get the correct system for your application. Specifications: Continuous Rating: 200 Amps DC Intermittent Rating: 400 Amps DC Voltage Rating: 48 Volts DC Operation: On/Off Mounting: Recessed or surface Termination Stud Size: 2 x 10 mm (3/8') Dimensions: 69 x 69 x 75h mm (2.75' x 2. Boat Battery Isolators & Charging Relays How-Tos Selecting the Correct Automatic Charging Relay Heavy Duty Marine Battery Isolator Switch.