ProMax offers its new PriorityStart! battery charge monitor. This system monitors the battery voltage when the key is not in a vehicle’s ignition. Once the battery has been discharged to 11.7 volts, it automatically disconnects the load. It automatically reconnects when a driver steps on the brake pedal. It has no timer to set, no key fob to carry, and does not require lifting the hood to use jumper cables. According to the company, it takes less than 15 minutes to install.