15. Charge the smartphone whenever possible:[/SIZE][/FONT] Contrary to general opinion - this is perfectly OK, even desirable! With the old nickel-cadmium (Ni-Cad) batteries, the advice was to let them run down completely and then fully recharge. That's not the case with today's lithium ion (Li-Ion) batteries, which are in all smartphones... even the user manuals are often wrong. Feel free to "Top Up" today's smartphones anytime - look for outlets in meeting rooms, airports or charge while driving. There will be many more charge cycles possible to our batteries if we recharge from 40% (used capacity), than from 80%.