![]() ![]() To account for this, battery backups include a warranty that expresses how efficient the battery should be by the end of the warranty period. That's because, like other types of batteries, battery backups lose storage capacity over time. Lifespan and warrantiesĪ few years after installation, you may notice that your battery backup system doesn't hold a charge as well as it used to. You won't need to replenish a fuel source (like you would with a generator), and there's no need for regular maintenance. ![]() You can expect to pay a few thousand dollars for installation (which is separate from the cost of the battery).Īfter the initial setup, there's little maintenance required on a battery backup system. Once you've decided on a battery or batteries, make sure to have it professionally installed - otherwise, you run the risk of injuring yourself. If you're buying a battery backup as part of a solar panel system, however, you may qualify for a rebate or tax credit. According to the US Department of Energy, solar batteries can cost anywhere from $12,000 to $22,000. The price will depend on which battery model you choose and how many you buy for your system. CNET curated a list of the best batteries here. You can get battery backups from a range of businesses, including manufacturers, solar companies and battery retailers. Cadmium is toxic, however, and generally not appropriate for residential use. Nickel-cadmium batteries are very durable, expensive and work well in extreme temperatures making them a good choice for large-scale commercial and industrial projects. ![]() Nickel-cadmium batteries have a high energy density with double the energy of a lead-acid battery. However, the technology appears promising, and it could become more widely used in residential battery backup systems in the near future. Flow batteriesįlow batteries (or redox flow batteries) are less common in home systems since they're mainly designed for commercial use. They're cheaper than lithium-ion, but they aren't as efficient, which means they're best suited for small systems. Lead-acid batteries have been used for hundreds of years and are the primary type of battery used in cars. They're lightweight and energy-efficient, making them perfect for home use. Most of today's popular battery backup products are lithium-ion, including the Tesla Powerwall, Panasonic EverVolt and Generac PWRcell. Lithium-ion batteries are the most common for home systems. There are several kinds of batteries used in battery backup systems, including lithium-ion, lead-acid and flow batteries.
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