Base Power

How long your Base battery lasts depends on four main factors:

How much power you use: This is the most important factor. A battery stores a fixed amount of energy when the grid is down, so running high-usage devices (like A/C or laundry machines) will shorten backup time, just like a bigger water hose will drain a bucket more quickly. Reducing your power usage will extend it. We deploy larger batteries than the typical market size so that you can last longer.

Battery charge at the start of an outage: Backup time depends on how charged your battery is when the power goes out. Base actively monitors charge levels, maintaining an average 93% charge over the course of a month. Our outage prediction technology tries to ensure that your battery has over 90% charge before outages, even though we sometimes lower it to 20% to perform our grid-balancing operations.

How many batteries you have: Most homes get one battery (20-25 kWh), though some may qualify for two batteries (50 kWh). More batteries mean more backup power.

Additional generation sources: Base batteries integrate with solar panels or generators, which can extend your backup duration during an outage.

1. How much power you use: This is the most important factor. A battery stores a fixed amount of energy when the grid is down, so running high-usage devices (like A/C or laundry machines) will shorten backup time, just like a bigger water hose will drain a bucket more quickly. Reducing your power usage will extend it. We deploy larger batteries than the typical market size so that you can last longer. 
2. Battery charge at the start of an outage: Backup time depends on how charged your battery is when the power goes out. Base actively monitors charge levels, maintaining an average 93% charge over the course of a month. Our outage prediction technology tries to ensure that your battery has over 90% charge before outages, even though we sometimes lower it to 20% to perform our grid-balancing operations. 
3. How many batteries you have: Most homes get one battery (20-25 kWh), though some may qualify for two batteries (50 kWh). More batteries mean more backup power. 
4. Additional generation sources: Base batteries integrate with solar panels or generators, which can extend your backup duration during an outage.

We calculate backup duration based on your battery's charge level and capacity. The high range shows backup time 90% of the time, while the low range reflects a 10% chance of a lower charge during an outage. Backup time won’t go below the low range unless appliance usage increases.

Here is a breakdown of how energy usage translates to battery duration:

Low usage (e.g., fridge, freezer, and lights):

- Single battery: 30–40 hours
- Two batteries: 60–81 hours

Average usage (typical appliances, some A/C):

- Single battery: 10–13 hours
- Two batteries: 20–27 hours

High usage (heavy appliances like A/C or electric heaters):

- Single battery: 2–3 hours
- Two batteries: 4–5 hours

- Low usage (e.g., fridge, freezer, and lights):
 - Single battery: 30–40 hours
 - Two batteries: 60–81 hours
- Average usage (typical appliances, some A/C):
 - Single battery: 10–13 hours
 - Two batteries: 20–27 hours
- High usage (heavy appliances like A/C or electric heaters):
 - Single battery: 2–3 hours
 - Two batteries: 4–5 hours

When your power goes out, we’ll notify you and monitor your battery’s status. If it’s running low, we’ll recommend turning off high-usage appliances to extend your backup time.