In general, anything from 3 to 6 months is an average shelf life typical of high-quality lithium ion batteries. If you use your lithium solar battery every day, then the shelf life isn’t nearly as important. In areas without sufficient sunlight, off-grid solar energy systems must have several 12v lithium ion batteries on hand for extended periods of consumption. Sometimes, manufacturers refer to this as the maximum time between recharges, while others try to hide the term altogether.Ī good shelf-life rating is critical if you plan to only use a 12v lithium ion battery pack as an emergency source of power. Shelf LifeĪll 12v lithium ion batteries have an approximate shelf life which refers to the amount of time they can be left idle while maintaining their charge capacity. If a battery is rated at 1000Wh with 500 lifecycles at 80% DoD, then it can hold approximately 800Wh of electricity storage after 500 full uses. Most commonly, lifecycles are an estimate of a number or range of full recharges before the battery reaches 80% DoD. Over time, batteries slowly degrade and lose a portion of their capacity to store electricity, known as the depth of discharge (DoD). Lithium solar batteries can be expensive, and life cycle counts help estimate the approximate lifespan of storage. Next, it is critical to verify a 12v lithium ion battery’s estimated life cycle count before purchasing. As such, it is simple to calculate how long your battery will last.įeel free to use our solar load calculator to calculate your average daily electrical demand based on the wattages and runtimes of your electronics and appliances. Lithium ion batteries come with the advantage of being able to discharge their capacity without damaging the system. Storage capacity is measured in watt-hours (Wh) or amp-hours (Ah) to approximate the battery's discharge run time. So let's dive in.įirst and foremost, storage capacity is the most important thing to know about a 12v lithium ion battery. While we focus on off-grid solar storage, there are six key features to consider about lithium ion solar batteries before choosing the best battery for your application. You can use 12V lithium ion batteries in golf carts, boats, and tons of other applications. What to Look for in a 12V Lithium Ion Solar Battery Here, we outline what to look for when shopping for 12v lithium ion batteries and then review our picks for the top five lithium solar batteries. We have tinkered, tested, and sold thousands of lithium ion batteries over the years, always striving to find the next best battery for solar storage. understands that an off-grid solar energy system is only as good as its ability to store electricity onsite. With the price of both complete solar kits and solar energy storage capacities continuing to drop, there has never been a better time to take advantage of lithium ion technology. It is no secret that 12v lithium ion solar batteries are the best way to store solar energy in a small off-grid power system.
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