For one, when travelling, you can sometimes go for a while without having a chance to plug in and charge (due to not being on one place for long, bags being ina

For one, when travelling, you can sometimes go for a while without having a chance to plug in and charge (due to not being on one place for long, bags being inaccessible, not having outlets on a long plane ride, etc). But even when not travelling, I will sometimes forget to plug my phone in one night. It's really frustrating when it dies the next morning before I have a chance to recharge it again.