If your RG1000 has the Standard 15V/1A input, then you can expect it to take 3-4 hours to fully charge with the 110V wall charger, and it will take approx. 4-5 hours to charge with the 12V car charger with the vehicle running.
If your RG1000 has the Micro-USB charging input, then the charging speed will depend greatly on the USB charger you are using. Charging speeds are optimized when using a high power QC 3.0 USB port and our included charging cable. Charging times will vary from as few as 3 hours with a high power USB port to 24 hours on a low power USB port.