I’ve lent my refurbished Kindle 1 to a friend of mine to read some books and only a couple days later I’ve come to realize that since I’ve given him an electronic gadget it would have made sense to give him a charger as well since 1st generation Kindle uses custom power cable for charging rather than standard micro-USB like Kindle 2. Several weeks later he returned K1 after having read the books he intended and he never needed the charger…
You can get so used to not charging your Kindle frequently if you keep the Whispernet off that you can forget that you need to do it at all…