![To help save locomotive battery life, the Battery Saver is for when flipping the knife switch is forgotten](https://tmvcontrolsystems.com/wp-content/uploads/2018/12/BatterySaver_transparent.png)
The Battery Saver is a helpful timer which turns off all non-essential loads after 20 minutes from engine shut-down.
The Battery Saver Kit includes one Display and one Battery Disconnect Contactor. This is all you need to avoid inconvenient dead batteries, caused by oversight or unneeded use of non-essential loads. Also helpful for temporarily keeping locomotive lights on after engine is shut down.
![TMV contactor, to go with Battery Saver as part of battery saver kit](https://tmvcontrolsystems.com/wp-content/uploads/2018/12/BatteryContactor_Shadow.jpg)
When the engine is on and power is being generated, the Battery Saver displays “ENGINE RUNNING”.
When no power is being generated, the timer will count down. A buzzer will sound when the timer reaches 10 minutes, and again at 30 seconds. At this time the TIMER RESET button will light up; pressing it will gain another 20 minutes. If TIMER RESET is not pushed at this time, power is cut off from non-essential loads and battery life is preserved.