It’s been a long-standing, widely accepted fact that electricity on water do not mix. However, with electronics becoming more prevalent in our day-to-day lives, power bank manufacturers are realizing that their products will be used outside. · Power banks like the Dark Energy Poseidon Pro 10200 are designed to deliver power to your devices in the worst weather conditions. It carries an IP68 rating, and all of its ports can be covered when the device is not in use.

All of the power banks on this list are relatively small and portable. The majority of users pick 10,000 mAh to 15,000 mAh power banks, a good choice for recharging a personal smartphone. · Compact 10,000 mAh options like the Skullcandy Fat Stash 2 and the Nitecore NB 10000 offer a nice balance between utility and portability. They fit in a pant pocket, and they pack enough power to keep a smartphone or satellite messenger alive for several days without a wall outlet. · If you plan to charge larger devices like a tablet or laptop, we recommend sizing up to the 20,000+ mAh range. These products

If treated properly, the power banks on this list should perform reliably for several years. All batteries degrade with time and regular use. Most modern products can be fully charged and discharged about 1,000 times before they no longer function. For most users, this equates to 3-5 years’ worth of use.