Lithium-Ion batteries use 3 cells to provide an 11.1 volt battery, 4 cells to provide a 14.8 volts battery or 10 cells to provide 37 volts battery.ĬAPACITY: Lithium-Ion cells are place in parallel to provide the amount of amp-hours (Ah) required. By using the cells in series, a battery pack can have any voltage possible in 3.7 volt steps. VOLTAGE PER CELL: Lithium-Ion batteries have a nominal voltage of 3.7 volts per cell. Lithium-Ion batteries have a high ENERGY DENSITY (weight to size ratio). Lithium-Ion batteries can be customized to customer needs for size, fit, and performance. This requirement is exempted for prototype battery packs. However, beginning in 2003/2004, the DOT required battery packs to pass new DOT tests. Until 2003, there were no DOT restrictions on transportation of Li-Ion cells or batteries. Lithium-Ion Battery Transportation Safety (developed for mass consumer use) provide several layers of safety not available in other chemistries.Īll cells sold by SWE are qualified by the manufacturer to UL 1642 requirements. Pack protection circuits (PTCs), shutdown separators, etc. Recent advances in Battery Management System (BMS) electronic technology for the Lithium-Ion battery and new modular design concepts for construction of complex battery systems have resulted in battery systems which are safer, more robust, more flexible, longer life, and easier to charge and maintain. Lithium-ion batteries are growing in popularity for defense, automotive, and aerospace applications due to their high energy density. In addition to consumer electronics, smaller versions of lithium-ion batteries can be found in specialty applications ranging from human implantable cells to various satellites, to hybrid vehicles and military craft. They are one of the most popular types of battery for portable electronics, with one of the best energy-to-weight ratios, no memory effect, and a very slow loss of charge when not in use. Lithium-ion batteries are common in consumer electronics. Lithium-ion batteries are also Environmentally Friendly. Lithium-ion batteries have advanced to the level where there are very few applications that cannot take advantage of the excellent cycle life, power & energy density and wide operating temperature range inherent in Lithium-ion technology. SWE has reduced to practice all of this intellectual property in delivered products used in above-ground, down hole and subsea applications. SWE has produced a number of patents directly related to the control of Lithium-Ion batteries and has various related trade secrets – some of which are being considered for future patent applications. SWE participates with the intellectual community in sharing technical advances via international battery technology conferences and technical journals. SWE has invested extensively in acquiring technology and creating intellectual property associated with development of battery packs and battery systems that utilize Lithium-Ion and Lithium-Polymer chemistry. Battery packs built to customer specifications using Lithium-Ion and Lithium-Polymer cells have been Designed and Developed at SWE for over 20 years.
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