Magsafe Battery Pack battery drain
I've been using my Magsafe Battery Pack for over a month now and I usually use it daily. Recently, for some reason, I don't use the battery pack for about 5 days. The problem is, is it normal for the battery pack to drain to 0% if not being used for only a few days? The battery pack is fully charged before I left it in a drawer for 5 days. I did another test a few days later leaving the Magsafe battery pack, fully charged, and not using it for 3 days, the pack left with only 38% battery.
Please let me know if this is normal or if there is something wrong with my Magsafe Battery Pack. Thanks!