The indicator on your Pingi will show signs of wear and tear over time. This is normal. If the indicator looks faded, the product can still be used and recharged however. To see when Pingi is fully saturated and ready to be recharged, you can check the weight of your Pingi. When saturated your Pingi will weigh approximately the sum of its empty weight and its absorption capacity. Please check the instruction manual for details about specific articles (see pingi.com for information on individual products).