https://community.ee.co.uk/t5/Archived-Posts/4gee-wifi-mini-2020/m-p/1030486#M271083 <P>You can but that's what ruins the Battery over long periods of time.</P><P>&nbsp;</P><P>Depending on the model some MiFi Routers will run ok with the battery removed, others won't, try it</P><P>&nbsp;</P><P>You could also try Booting up the Router then after 5 mins remove the battery whilst plugged in and running, also your using the original USB Lead if not a decent modern one , same again for the USB Power Supply.</P><P>&nbsp;</P> Fri, 19 Feb 2021 15:45:01 GMT EssexBoyEE 2021-02-19T15:45:01Z https://community.ee.co.uk/t5/Archived-Posts/4gee-wifi-mini-2020/m-p/1030464#M271082 <P>I have recently bought a 4gee mini wifi 2020 router it works fine but the battery doesn't last very long can you leave it plugged in whilst your using it</P> Fri, 19 Feb 2021 15:09:17 GMT https://community.ee.co.uk/t5/Archived-Posts/4gee-wifi-mini-2020/m-p/1030464#M271082 Rainy33 2021-02-19T15:09:17Z https://community.ee.co.uk/t5/Archived-Posts/4gee-wifi-mini-2020/m-p/1030486#M271083 <P>You can but that's what ruins the Battery over long periods of time.</P><P>&nbsp;</P><P>Depending on the model some MiFi Routers will run ok with the battery removed, others won't, try it</P><P>&nbsp;</P><P>You could also try Booting up the Router then after 5 mins remove the battery whilst plugged in and running, also your using the original USB Lead if not a decent modern one , same again for the USB Power Supply.</P><P>&nbsp;</P> Fri, 19 Feb 2021 15:45:01 GMT https://community.ee.co.uk/t5/Archived-Posts/4gee-wifi-mini-2020/m-p/1030486#M271083 EssexBoyEE 2021-02-19T15:45:01Z