![]() Your warranty will end once your battery hits 10,000 cycles or 10 years, whichever comes first. Sonnen batteries include a 10-year, 10,000-cycle warranty that guarantees an end-of-life capacity of 70%. A cycle is the process of your battery fully charging and discharging. Most battery manufacturers have warranty clauses limiting the number of cycles your battery can reach, usually between 4,000 and 6,000 cycles. A higher DoD indicates a better-quality battery. Battery manufacturers typically limit DoD to protect the longevity of a battery. Sonnen Eco batteries have a depth of discharge (DoD) of 90%, which means they can be charged up to 90% of their usable capacity without shortening their lifespan. Batteries with a higher round-trip efficiency can convert power from your solar panels more efficiently. Energy Information Association (EIA), the industry average is around 80%. This means you can use 90% of the battery’s stored energy while the other 10% is lost during the charging process. Sonnen Eco batteries have a round-trip efficiency of 90%. Batteries with a higher power rating can run several high-power appliances at once. The Eco 5 generates 3 kW, while the 7.5 model generates 4 kW. The industry standard is 5 kilowatts (kW) of continuous power. Sonnen Eco batteries vary in their continuous power rating, which calculates how much power can be produced over an extended period. LFP modules are recyclable and better for the environment. LFP batteries are also safer than NMC options because they don’t contain cobalt, which can cause fires if the batteries are misused. These batteries are more efficient and last longer than the more common Lithium Nickel Manganese Cobalt Oxide (NMC) options. LFP technology is still new in the solar industry. Eco 20: The largest combination creates 20 kWh of storage capacity.Eco 17.5: This seven-module system creates 17.5 kWh of storage capacity.Eco 15: This six-module system creates 15 kWh of storage capacity.Eco 12.5: This five-module system creates 12.5 kWh of storage capacity.Eco 10: This four-module system creates 10 kWh of storage capacity.Eco 7.5: This three-module system creates 7.5 kWh of storage capacity.Eco 5: This is the smallest two-module combination, producing 5 kWh.The smallest system they can create is 5 kWh, and the largest is 20 kWh. ![]() These batteries are made in 2.5 kilowatt-hours (kWh) modules. DC-coupled (direct current) batteries are more efficient but difficult to install). It’s also AC-coupled (alternating current), making it easy to integrate into an existing solar system. The Sonnen Eco is a modular battery, meaning there are multiple size options that can be stacked to build a larger storage system.
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