Battery Disconnect Switch Key benefits — why you need it Prevents deep discharge and preserves battery life by cutting parasitic drain when the vehicle is parked or unused. Reduces the risk of starting problems and premature battery replacement by maintaining charge during long-term storage. Acts as a simple theft deterrent by isolating the battery when the vehicle is unattended. Low standby power keeps the unit ready without itself draining the battery. Performance and specifications Rated current: 240 A continuous Rated voltage: 12 V Instantaneous (peak) current: 500 A Standby power consumption: 3 mA Switch-off threshold: 11.8 V ± 0.2 V Operation modes: manual (hand) operation and remote control What it does and how it solves problems Automatically or manually isolates the battery to stop slow drains from alarms, infotainment, chargers, or aging wiring. Switches off at a defined low-voltage threshold (11.8 V ± 0.2 V) to protect the battery from deep discharge and extend usable life. Low standby consumption (3 mA) ensures the switch itself does not significantly affect battery state of charge during storage. Compatibility and installation Designed for 12 V negative-ground electrical systems. Uses a negative-connection installation method for straightforward wiring and stable performance. Installation note: turn off the power supply before installation and perform an ignition/start test after installation to confirm correct operation. Practical use scenarios Long-term parking: Store a vehicle for weeks or months without worry — the switch prevents parasitic drains that would otherwise run the battery flat. Seasonal or stored equipment: Ideal for vehicles or equipment kept off-season (for example, caravans, trailers, or vehicles used only in certain months) to maintain battery health between uses. Fleet or service vehicles: Quickly cut power during maintenance or storage to reduce battery replacements and downtime; use remote control for convenient access. Why this switch stands out Clear, measurable safeguards: defined switch-off voltage and high continuous/peak current ratings provide reliable protection under normal automotive loads. Dual control: manual override plus remote control offers flexibility for daily use or long-term storage. Simple, reliable installation: negative-connection method minimizes wiring complexity and improves stability. Safety and maintenance Always disconnect power before wiring the unit. Verify correct operation with an ignition/start test after installation. Regularly check connections for corrosion or looseness to maintain reliable performance.