RAVPower Luster Mini 3000mAh Ultra-Compact Power Bank
This is a very convenient and small external battery charger. It’s ideal for the on-the-go situations where you want to be sure that you’ll have extra power on hand in the case your smartphone runs out of power.
The 3000 mAh battery capacity is nominally sufficient to fully charge most smartphones out there. For instance, iPhone 5S battery capacity is little over 1500 mAh, while Galaxy S4 has a 2600 mAh battery. Keep in mind that there is some inefficiency associated with the charging process, so that the amount of power that you get will be about 80%-90% of the nominal battery capacity. I have been able to fully charge my iPhone 4S and Galaxy S3. I’ve also been able to charge my first generation iPad to about 40% of its capacity, but this small battery is definitely not meant to be used with tablets. There is no information on the kind of current that this battery puts out, but my guess would be that it’s 1 A.
This battery has a very basic cylindrical look. Most of the body is made out of an aluminum pipe. The pipe actually screws in at one end, so you can open up this battery and take a look at its innards. Those are not particularly pretty to look at: a big cylindrical battery taped to a small logic/USB board. The battery has a small LED light at one end that glows when the battery is being charged or discharged. The whole battery looks like a big roll of Mentos.
At $39 this probably the most expensive such small battery that I’ve come across, by at least a factor of two or three. This battery is pretty well made, durable, and effective, but I don’t think it’s worth as much as the current Amazon price suggests.
**** Product provided for review purposes. ****
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