Down4Sound DOWN4SOUND 500 AMP BATTERY ISOLATOR D4S-BIS500

Description Warranty Information 0 Reviews Description D4S-BIS500 500 Amp Battery Isolator and High Current Starter Relay The D4S-BIS500 is a heavy-duty 500 amp battery isolator and high current starter relay built for serious car audio systems, dual battery setups, and high-demand electrical applications. It helps protect your starting battery while allowing your auxiliary battery to power amplifiers, accessories, and other aftermarket equipment with confidence. If you are running a high-power system and need better battery management, the D4S-BIS500 gives you a dependable solution for isolating power and improving overall electrical system performance. Key Features 500 amp high current capacity for demanding mobile audio and power applications Battery isolation helps protect your starting battery from excessive drain High current starter relay design for strong and reliable performance Ideal for dual battery setups, car audio systems, and auxiliary power management Built for dependable operation in performance and custom vehicle electrical systems Clean and simple solution for managing multiple batteries in one vehicle Why Choose the D4S-BIS500 In high-performance car audio builds, proper battery isolation is critical. The D4S-BIS500 helps separate your primary and secondary batteries so your system can deliver power where it is needed without compromising starting reliability. Whether you are running multiple amplifiers, an auxiliary battery bank, or added electrical accessories, this isolator is designed to support stable and efficient power distribution. Ideal For Dual battery car audio systems High-power amplifier installations Vehicles with auxiliary batteries Custom electrical and performance builds Mobile audio applications requiring battery protection and power control Product Information Model: D4S-BIS500 Product Type: Battery Isolator and High Current Starter Relay Current Rating: 500 Amps Packaging: White box packing Upgrade your vehicle’s power system with the D4S-BIS500 500 amp battery isolator and enjoy better battery protection, cleaner power management, and dependable performance for your mobile audio setup. View All Close Warranty Information Warranty Information Your new Down4Sound product is covered by 1 limited warranty if purchased from Down4Sound or an authorized Down4Sound dealer. This warranty does not cover improper installation, accidental damage, misuse, abuse, improper wiring, operation of unit outside of listed specifications, or any product that has been modified or repaired by anyone other than Down4Sound. Your warranty covers defects in materials and/or workmanship ONLY and is not an insurance policy. The warranty only covers the original owner of the amplifier. All warranty returns must be accompanied by the original sales invoice or receipt. You must contact us to request an RMA number prior to sending any returns via the RMA request form on our websi te. You are responsible for the cost of shipping your product back to us for warranty examination. If your product is covered under warranty, shipping back to you will be at no charge to you – if your product is replaced/repaired outside of warranty you must pay for return shipping and repair bill prior returning of the product or if no defect is found you are required to pay for return shipping only. At the sole discretion of Down4Sound your product will be either repaired or replaced when it is being covered under warranty. In the event of shipping damage due to improper packaging on products being returned to Down4Sound the customer is liable for the cost of all damages, necessary repairs, or replacement. Be sure to properly pack your return! * Extended additional warranty purchased on amplifiers take in affect from the date of purchase and must also be stated on orginal sales invoice or receipt. Refund/Return Policy: https://www.down4soundshop.com/shipping-returns/ Down4Sound - Hours of Operation Monday 6am - 9pm PDT Tuesday 6am - 9pm PDT Wednesday 6am - 9pm PDT Thursday 6am - 9pm PDT Friday 6am - 9pm PDT Saturday 8am - 4pm PDT Sunday Closed View All Close 0 Reviews View All Close