You might consider getting one or more 'power banks" ....portable rechargers to take with you. I have a couple of them and use them to charge devices when there's no place to plug devices in to recharge the battery. I make sure they are fully 'loaded" before leaving home, and have used them during long flights when the battery is getting low on my Kindle or iTouch. That way I don't lose the ability to read or listen to my preferred music.