How much backup power does my Base battery save for outages?

How much is saved
Base aims to keep at least 5 kilowatt-hours (kWh) in each battery for outages.
A kilowatt-hour is a unit of stored energy.

At low usage, that gives you about:
• One battery: 5 hours
• Two batteries: 10 hours

Low usage means running only the basics, like your refrigerator, LED lights, Wi-Fi router, and phone or laptop chargers.

Large appliances like central air conditioning, electric dryers, hot tubs, and EV chargers drain the battery much faster.

Your battery during an outage
When the grid goes down, your battery powers only your home.
Base will not send energy from your battery to the grid during an outage.

If you have solar panels, they can recharge your battery during the day and extend your backup time.

Why your battery may sometimes be at 5 kWh
Your battery usually holds more than 5 kWh. It may drop closer to 5 kWh during grid-balancing, when your battery sends some energy back to the grid while demand is high.

Grid-balancing is how Base keeps your energy rate low:
Learn how grid-balancing works