We do not manufacture the battery cells used in our energy storage packs. Our battery cells, which are an integral part of our battery products and systems, are sourced from a limited number of manufacturers located in China. While we obtain components for our products and systems from multiple sources whenever possible, we have spent a great deal of time in developing and testing our battery cells that we receive from our suppliers. We refer to the battery cell suppliers as our "limited source suppliers." Additionally, our operations are materially dependent upon the continued market acceptance and quality of these manufacturers' products and their ability to continue to manufacture products that are competitive and that comply with laws relating to environmental and efficiency standards. Our inability to obtain products from one or more of these suppliers or a decline in market acceptance of these suppliers' products could have a material adverse effect on our business, results of operations and financial condition. From time to time we have experienced shortages, allocations and discontinuances of certain components and products, resulting in delays in filling orders. Qualifying new suppliers to compensate for such shortages may be time-consuming and costly. In addition, we may have to recertify our UL Listings for the battery cells from new suppliers, which in turn has led to delays in product acceptance. Similar delays may occur in the future. Furthermore, the performance of the components from our suppliers as incorporated in our products may not meet the quality requirements of our customers.
To date, we have no qualified alternative sources for our battery cells although we research and assess cells from other suppliers on an ongoing basis. We generally do not maintain long-term agreements with our limited source suppliers. While we believe that we will be able to establish additional supplier relationships for our battery cells, we may be unable to do so in the short term or at all at prices, quality or costs that are favorable to us.
Changes in business conditions, wars, regulatory requirements, economic conditions and cycles, governmental changes, pandemic, and other factors beyond our control could also affect our suppliers' ability to deliver components to us on a timely basis or cause us to terminate our relationship with them and require us to find replacements, which we may have difficulty doing. Furthermore, if we experience significant increased demand, or need to replace our existing suppliers, there can be no assurance that additional supplies of component parts will be available when required on terms that are favorable to us, at all, or that any supplier would allocate sufficient supplies to us in order to meet our requirements or fill our orders in a timely manner. In the past, we have replaced certain suppliers because of their failure to provide components that met our quality control standards. The loss of any limited source supplier or the disruption in the supply of components from these suppliers could lead to delays in the deliveries of our battery products and systems to our customers, which could hurt our relationships with our customers and also materially adversely affect our business, prospects and operating results.