Genuine Sure Power Industries multi-battery isolator assembly (Part Number: 99000330). This heavy-duty solid-state electrical component safeguards your main starting battery from accidental discharge by isolating up to three independent auxiliary battery banks while managing high-output charging from a single alternator input. Featuring a massive finned aluminum heat sink housing and heavy-duty terminal studs, it installs easily right into your vehicle or vessel’s charging circuit to prevent unexpected power drain and extend overall battery lifecycle performance.

• Key Features: 1-input / 3-output multi-bank charging, solid-state electronic isolation (no mechanical contacts to wear out), heavy-duty finned heat dissipation, and continuous high-current management.
• Technical Specs: Brand: Sure Power Industries | Max Alternator Amps: 160 Amps Peak | DC Voltage Range: 6-50 VDC | Ground Configuration: Negative Ground.
• Condition Notes: This item is in used condition and exhibits a slight dent on the housing along with standard cosmetic blemishes, minor surface scratches, or typical mounting rail scuffs from previous installation. The casing distortion is purely cosmetic; all terminal threads, nuts, cooling fins, and internal electrical components are completely intact, functionally clean, and structurally sound for immediate wire termination.
• Installation Notes: Simply bolt directly to a clean bulkhead or firewall using the integrated side mounting rails. Splice your main alternator output cable to the center input stud, then route the independent output studs to your respective battery bank terminals. Ensure your system utilizes a negative ground configuration before completing final wire routing. Message with any questions!