A big power bank with 20,000mAh or more will deliver almost five charges for an iPhone 13 – and we’d recommend this size if you want to charge bigger batteries like those in an iPad or laptop. These are also about as big as you can bring on a flight (more on that below). If you spend a lot of time outdoors, this is among your best choices for keeping your devices running while off of the grid. In other words, it’s camping approved. This portable power bank with built-in cables is perfectly compatible with iPhone and USB C devices. It is already passed thousands of bending tests to prove its durability, tear-resistant, and bend-resistant, so you don’t need to carry any extra cables while on the go. Ixnine Power Bank adopts the fast charging speed feature. Using the upgraded 18W PD and QC 3.0 technology, it will charge your phone at full speed. It will only take about 30 minutes to bring an iPhone to 50%, 3.5 times faster than the original 9 W charger. Power banks with built-in charging cables have some advantages and disadvantages that can impact their usability. Here are some of the key advantages/disadvantages: Advantages

The QiSa Solar Charger can use the sun to recharge itself, supports both wired and wireless charging, and even has a built-in flashlight. Best of all, it offers a massive 38,800mAh capacity. Who It's For Capacity:Think of capacity as the energy reservoir of your power bank. The higher the mAh (milliampere-hour), the more power it can store. So, choose a power bank with a capacity that suits your charging needs and can juice up multiple devices. Goal Zero updated its Sherpa line of portable chargers with better wireless charging capabilities: 15 watts, up from 5 watts in the previous model. I tested the Sherpa AC, which features two USB-C ports (60-watt and 100-watt), two USB-A ports, and a 100-watt AC port for those devices that need a pronged plug. It strikes a good balance between power storage (93 watt-hours in my drain test) and weight (2 pounds). It’s enough to charge up my Dell XPS 13 almost twice. When you finally reach a wall outlet, you can use a multi-port USB charger to recharge all your devices at once.

LED Light

Generally speaking, you charge the battery itself via micro USB or USB-C (input). Some batteries charge faster than others and USB-C charges much faster than micro USB. Charge it Fully: Plug in your power bank and let it charge fully before using it. This ensures that it's ready to provide a reliable power source when you need it.

There are a lot of different brands that offer power banks, each with its own specific features. Some power banks may have a built-in cable, while others might come with USB ports to charge more than one device. At least a one-year warranty: A year is plenty of time to use your power bank and make sure it’s working properly, although longer warranties are always preferable. Larger batteries with higher capacities might include a multitude of ports to support input and multiple outputs at the same time. You may see two USB-A and two USB-C ports, for example, though micro USB ports are becoming less common.Charging input and output of USB-C ports: We used a Total Phase USB Power Delivery Analyzer to measure the maximum output (watts) from each USB-C port The charging cable could be fragile: Built-in charging cables may break easily and not last long, which is a bigger hindrance because it’s built into the power bank. It’s impossible to replace the cables if they break, which means the power bank becomes unusable.