Advice needed for 670G sensor

I have a medtronic 670G pump. I just inserted a new sensor and it actually goes in for once with no bleedings or other problems (yay). But I just got an alert that the transmitter battery is low - at 20%. I don't want to waste a perfectly good sensor... can I remove the transmitter from the sensor and charge it whileI just leave the sensor awkwardly in, and then reconnect it all later?