General Battery Question

[bcartervol98]

With the delivery today of my additional 1300mah Spinner I will not be using my original EGOT 1000mah batteries. With a full charge, how much do they discharge sitting unused? I plan to use these as backups and switch out between the two Spinners as my primary batteries but want to know they are there and ready. If they go a week, two weeks, a month, will they retain their charge assuming the power is switched off and there is no use?

[Viper Ron]

Very little if any, I've had batts sit around for a while and lend it to a friend with no issues