Battery Backup Run Time Calculator

Find out how long the VitalLog 7kWh Battery Backup will keep your lab equipment running during a power outage. Select the equipment connected to the battery backup, and the calculator will estimate your run time using independently certified energy consumption data for thousands of refrigerator, freezer, and lab equipment models.

How to use it:

Choose the Brand and Model of each piece of equipment you want to back up.
Enter the Quantity if you have more than one of the same unit, along with how many Hours On/Day and Days On/Week it typically runs.
Click + Add Another Entry to include additional equipment on the same battery backup.
If you’re planning to use more than one battery backup unit, update the Number of 7kWh Battery Backup Units field to see how run time changes.

The calculator will show your estimated kWh/day and kWh/week energy usage, along with two run time estimates: Estimated Backup Time, based on your equipment’s typical average power draw, and Max Load Backup Time, a conservative estimate assuming all connected equipment draws continuous power at once. Hover over either label for a quick explanation.

Need help sizing the right battery backup for your lab? Click Request Quote or contact LabRepCo directly, and our team will help you find the right solution.

Brand	Model	Quantity	Hours On/Day	Days On/Week	kWh/day	kWh/week

Estimated Backup Time is based on average daily energy consumption for the selected equipment, derived from independently certified ENERGY STAR data. Max Load Backup Time is based on the higher-draw certified figure for each unit (the Maximum Daily Energy Allowance for standard refrigerators and freezers), representing a conservative worst-case scenario. Actual run time will vary by ambient temperature, door openings, unit condition, and battery age. For a guaranteed sizing recommendation, contact LabRepCo.

For Ultra-Low Temperature Freezers, Estimated Backup Time is based on the unit’s certified energy consumption running at -70°C, and Max Load Backup Time is based on the unit’s certified energy consumption running at -80°C.

For manually entered equipment, Max Load Backup Time is estimated at 1.5× the kWh/day value you provided, as a conservative worst-case proxy. For a more accurate figure, enter the unit’s maximum rated wattage from its spec sheet and contact LabRepCo for a custom sizing recommendation.