Advanced Lithium Energy Storage
The need for better energy storage has led to the development of new battery chemistries which offer increased cycle life and energy transfer efficiency which are ideal for use in the renewable energy market. The SWE (Switch Energy) battery uses Lithium Iron Phosphate in combination with Yttrium Oxide to create a battery that delivers higher performance in both cold and hot environments.
Energy Density of the SWE battery is approximately 1/2 the size and 1/3 the weight of an equivalent lead acid battery.
Discharge Rate is a consideration in determining the battery capacity needed for energy storage. For example: a system requiring a 100 Ah discharge during an eight hour period would require a 125 Ah SWE battery as compared to a 230 Ah lead acid battery. The combination of higher discharge rate and higher depth of discharge % (DOD) makes the SWE battery the ideal choice for both an off-grid or a grid-tie system with battery back-up.
Cycle Life is a measure of battery life expressed in terms of the number of charge and discharge cycles after which the battery becomes unusable. In lead acid batteries, most are not equipped with battery cell management, imbalance in lead acid cells leads to
sulfation and battery death. The SWE battery is equipped with a sophisticated Battery Management System (BMS) that monitors and balances individual cells. The higher energy density of active material in lithium batteries provides over 4 times the cycle life of an equivalent lead acid battery.
Transfer Efficiency of energy produced from renewable energy sources to the batteries: The SWE battery has a 96% transfer efficiency compared to the lower 72 – 76% rate of the lead acid battery.
Adding a SWE-LBSU to a current solar installation or the replacement of an existing lead acid battery pack is as easy as connecting four cables to the internal power studs. Simple program changes to the solar charge controller and inverter, and the SWE-LBSU is installed and operational in minutes.
The SWE Lithium Battery is an option that can be used in place of the lead acid batteries in some of our systems.