Anyone who uses a smartphone knows the importance of carrying a backup battery pack. But try searching for one on Amazon, say, and you’re likely to feel overwhelmed by the vast number of options. Besides the various charging specs, ports, and even cables you have to consider, there are a ton of competing brands. How are you supposed to know which ones actually live up to their promise?
This is very cool product. I love this as a solution for backpacking because it gives you so much flexibility at a very low weight. You really can’t get lighter than this for power.
It is basically an ultra-lightweight power bank for li-ion batteries. However, it works in both ways: Put a full battery in the external power bank and you can use it to charge micro-USB devices.
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What About Lightweight Power Banks with Built-in Solar Panels?
I used to think these were awesome and practical. Then I actually tried one. Guess what? Turns out it is NOT a good idea to leave a lightweight power bank out in the blazing hot sun! The model I had worked for a while and then quickly died. I’ve heard the same from other users.
On top of that, most have no power display so there’s no way of knowing the charge level. You can easily over-charge the external power bank, meaning it gets fried. But leave it out too little and it won’t have enough power for your needs.
If a reputable brand (instead of cheap generic brands) started making one of these, I might give it a try. Until then, I’ll keep my external power bank and solar panel separate.
What About Power Bank Capacity and Backpacking?
Power bank batteries have capacity measured in Milliamp hours, or mAh. This stands for how much power the battery can provide per hour.
For example, if your device requires 1000 Milliamps per hour, then a 3,000mAh battery will (in theory*) keep it going for 3 hours.
What Capacity Power Bank Do I Need?
The amount of capacity you need for a backpacking trip ultimately depends on which devices you’ll bring and how often you use them.
To figure out how much power you need:
Tally up the mAh/day amount for each gadget you are bringing.
Multiply this number by the how many days your backpacking trip will be (or how long until a refuel).
To play it safe, assume that the external power bank will only deliver 66% of its advertised capacity.
Divide the total mAh you need by 0.66.
What About iWALK 4500mah Shiny Poratble Charger Lightweight Power Bank?
If you have power needs when you go out (for example, if you want to go shopping or go to work), then you need a portable power bank to maintain the power of your phone.
Remember, solar panels are often hyped. They are cool, but require very sunny conditions to work properly. They can also be heavy, bulky, and annoying. However, there are many reliable small Lightweight power banks, 4500 mA capacity can solve most of the problems in your daily life.
The appearance of the shiny cute portable charger is made of rhinestones. It is a very good choice to give to relatives and friends as Christmas and birthday gifts.