Solar Battery Backup Solutions

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When you’re thinking about additional solar products to add to your home’s solar power system, solar battery backup options would be a smart choice. Backup power is an asset in case of an emergency or storm outage that can also increase energy independence and help accelerate the transition to a clean energy powered electricity system. Before you choose a backup battery, here are some pertinent details to consider.


Battery capacity is the total amount of electricity you can store in your backup battery. Measured in kilowatt-hours (kWh), solar batteries have the advantage of being able to combine multiple batteries to pool storage capacity. The higher the number of stackable batteries, the greater amount of solar energy available in reserve for when you need it. Key points to keep in mind—a typical US household uses on average 30 kWh a day. The average solar battery has a capacity of 10 kWh.


Power rating is another important consideration. Power shows you the battery output measured in kilowatts (kW). Think of it this way: a solar battery with a high capacity, low power rating would provide a small amount of electricity over a longer time period. You would be able to run a few small appliances. A low capacity, high power battery would be able to run more power-hungry appliances like an oven or a washing machine for a shorter amount of time.


Depth of discharge measures the level of charge the solar battery must consistently maintain. The higher the depth of discharge, the longer the lifespan of the battery. A typical solar battery will last between 5 to 15 years. Solar panels may last 25 to 35 years. Spending less money for a less powerful solar battery probably would not be the best option in the long run. Higher capacity means you’ll need fewer total batteries. Your local professional solar installation company will be able to advise on how many stackable solar batteries would be needed.


Companies selling backup batteries for solar panels guarantee the number of warranty coverage years or the number of battery cycles. One tip to extend the life of your solar backup battery is to protect it from extreme temperature drops. Buy a battery with built-in temperature moderation or build an enclosure for your solar backup batteries.


Lithium-ion batteries and deep-cycle absorbent glass mat (AGM) batteries are the best performing batteries for price, capacity, durability, and warranty. Solar batteries are a smart investment to store excess energy for nighttime, utility electrical grid brownouts or blackouts, storms, and on cloudy days.

Solar power is more affordable than ever, and our experts are here to help you. Give Cool Blew Solar a call today at 623-234-2836.