Abstract: Disclosed herein is a novel system to improve the cycle life of a rechargeable battery utilizing a particular cellulose-based separator within such a cell and a charging procedure thereof such a cell at a rate of less than 1 hour and at a charging voltage in excess of 4.2 volts. With such a separator and charging methodology, such a rechargeable battery utilizes the capability of reducing moisture within the cell and further plating potential of lithium on the anode thereof. In such a manner, the cycle life of such a battery may be lowered, allowing for faster charging and longer charge retention for the battery and thus the subject device utilized. The overall system utilizing such a methodology as well as the specific battery exhibiting such improved cycle life capabilities and retained charge over time are thus encompassed within this disclosure.

Abstract: A device and system thereof to provide early warning and potential shutdown of a charging consumer device including a rechargeable battery (i.e., lithium-ion) in the event of a possible thermal runaway are disclosed herein. Such a device includes a sensor to detect degassing of emitted carbon dioxide or hydrogen gas at a nanoparticle level as an indication of the initiation of such a possible flame presence due to such a thermal runaway event. Such a system thus incorporates such an overall device present within a close proximity to a rechargeable battery (or batteries) as a means to provide an early warning of such a potentially catastrophic situation to permit a user the capability of detaching or unplugging such a rechargeable battery and/or at least the chance to move the consumer device to a safer location. The method of utilizing such a device and system thereof is encompassed herein as well.