Electrifier XH-M609 Over-Discharge Battery Protection Module 12V-36V 7A | Adjustable cut-off and recovery thresholds | 3-digit LED display, 0.1V resolution | relay-switched output

Batteries fail early when they are drained too far. The Electrifier XH-M609 low voltage disconnect module guards against exactly that, sitting between your battery and its load and breaking the circuit before an over-discharge can do lasting damage. It is built for 12V to 36V DC battery systems, where holding a safe minimum charge is the difference between a pack that lasts and one that degrades after a handful of deep cycles. The module powers itself from the battery it watches, so no separate supply is needed. Two front-panel push buttons let you program the lower disconnect voltage and the upper reconnect voltage independently. When the pack drops to your set floor, the onboard relay opens and isolates the load; once the battery recovers to your chosen restore level, the relay closes and power returns automatically. A 3-digit red LED display shows live battery voltage at 0.1V resolution, with a supplier-stated measurement tolerance of plus or minus 0.1V, so the current state of charge is always visible. Connections are made through clearly marked input and output screw terminals, and the relay handles connected loads rated up to 7A, removing the need for an external contactor in light-duty setups. This makes it a practical fit for solar storage banks, lithium and LiFePO4 packs, e-bike and scooter cells, backup power builds and a wide range of DIY DC projects where over-discharge protection matters. It suits hobbyists, integrators and small workshops who need dependable low-voltage cut-off without wiring a full battery management system. Every Electrifier XH-M609 module is produced through ISO-certified manufacturing and is backed by a 1-year warranty, with direct technical support from the Electrifier team for any setup or application question.