Portable battery power is a must for anglers. Smartphones in a boat or fishing vest can provide temperature, barometric pressure and wind information, as well as severe-weather alerts. And phone cameras can instantly record and transmit catches of walleyes and other fish. None of which is possible without power, and one of the best portable, affordable suppliers I’ve found is the Soldier 7800mAh, available widely for about $60. Waterproof, dustproof, shockproof and hand-sized, the Soldier will power phones, laptops and other electronics. More at digitaltreasures.com.