Powertech 140A Dual Battery Isolator (VSR) for Automotive & Outdoor Setups

Starter battery flat again because the fridge and lights are all pulling from one source? The Powertech 140A VSR isolator handles that. It automatically separates your starter and auxiliary batteries while the alternator tops both up — no manual switching, no guesswork at 7am. 140A rating means it keeps pace with real loads, not just a single light. Plug it into your dual-battery rig and stop babysitting the charge

• 140A continuous rating for demanding dual-battery loads
• VSR (Voltage Sensitive Relay) — automatic connect/disconnect, no manual switching
• Keeps starter and auxiliary batteries electrically isolated while both charge from the alternator
• Powertech build, stocked by Jaycar