US Based customer service team- find out which pack is right for you! Contact us first so we can understand your specific needs and analyze your furniture's features and power demands. Proprietary patented product and technology allow us to provide the highest concentration of power in the smallest footprint available. For best safety practices we’ve rigorously tested our product and retain multiple safety certifications. (For details see additional information below.) Enouvation offers true universal connectivity either directly or through our selection of available adapters. Any feature requiring constant power including but not limited to lights, static touch buttons, and USB ports will dramatically decrease function counts and increase charging frequency. Get in touch with us for further guidance. The E4 Power Pack from Enouvation, patents pending, offers you the ability to go cordless on Power Motion furniture. This means you can float a Power Motion piece of furniture without having to see those unsightly, industrial cords. The E4 will give your Sofa with Power Headrests approximately 400 cycles* and Recliner 800 cycles* before having to recharge. Enouvation Power Packs are tested to multiple UL standards and certified, having gone through rigorous testing. All Power Packs have an LED Power Indicator that shows the level of power, so you always know when it’s time to recharge. Each Power Pack comes with its own charger in box. *The frequency in which your Power Pack will need to be recharged varies greatly on the amount of use. To ensure the best results over the lifetime of your product, be sure to charge fully (to 100% capacity) before the first use. Lights of any kind on furniture and sometimes the actuators (up/down, open/close) buttons themselves are a constant draw on the power pack and will dramatically affect the effectiveness of the Power Pack (Approx. 72-192 mAh each LED per day). USB ports whether used or not can also have a constant draw, but this will vary by manufacturer. A sofa with 2 USB ports that draw constant power can burn 120 mAh per day and will most definitely diminish the performance of any rechargeable Power Pack.