When you travel a lot for business or spend weekends outside camping, you need a reliable way to keep your electronics charged. If you’re going to be away from home for an extended period of time, on a long flight or spending the weekend in a cabin in the woods, you need a way to keep your phone charged, and those little travel chargers with enough power to charge your phone once or twice just aren’t going to cut it. What you need is a cell external battery charger with 20,000mAh power.

The Poweradd Pilot X7 Portable Cell External Battery Charger 20,000mAh has enough power to charge an iPhone six times, an iPad Air almost two times, and a Samsung S6 more than five times. This smart charge power bank automatically detects the current of your device and charges it as the fastest speed possible. It’s got dual USB ports, as well as 2.1A and 1A outputs.

iMuto’s Taurus X4 is a powerful little external battery power bank. It will charge virtually any device that can connect to USB, and has two USB ports that allow you to charge two devices simultaneously. The digital LED screen displays the remaining power, and does not waste battery by staying on – it’s hidden until activated. This one can charge the iPhone 6 more than seven times, a Galaxy S6 more than five times, a Galaxy Note 4 more than four times, and the iPad Air and new MacBook almost two times.

For a case with good built in protection, check out the Vinsic Smart Dual USB Power Bank. It’s designed to be naturally protected from falls, and made with fireproof material. With the Vinsic cell external battery charger of 20,000mAh, you can charge your iPhone 5 or 5s up to ten times, and the iPhone 6 will charge up to seven times.

Take a long lasting and reliable external battery charger with you on your next trip and you won’t get disconnected.