Still learning here, thank you for your patience. A charger came with an eGo type batt I bought. How do I know if it will work with 'any' usb wall wort? Like can I use my kindle, phone, or ?????? How would I know what to buy? Thank you. Pat PS Please don't think that my laptop does not have an enter key. For some reason I am not able to start a new paragraph. Someone said it is an IE thing on the update so I may have to use firefox or ? moving forward.