Please also consider subscribing to WIRED Portable power is handy for trips, camping, and everyday life, and with more and more weather events impacting the grid, an emergency power backup can be a lifesaver.

Amazon’s Prime Big Deal Days sales event is here and there are tons of great deals to be found on chargers and power banks. This year, Prime Big Deal Days runs from October 8 through October 9, and will include some great bargains.