Battery Life
Battery life for the iBattz BattStation Optimus 20400 is simply incredible. In our tests, the BattStation delivered over 1248 minutes of power during our intensive, ‘real world’ tests — easily beating several other larger, heavier, and higher-rated competitors, and ranking #1 among all portable chargers tested. Discharge rates, however, are not as stellar, as the BattStation charges at only 62% of the average speed of competitors.

Power/Size
The iBattz BattStation Optimus 20400 also ranked #1 among all portable chargers tested so far (all sizes) for power per cubic inch, and power per ounce. In fact, the BattStation is so powerful that it actually delivers 25% power per inch and ounce than the closest competitor, and over 50% more power than the category average. In short: the iBattz is the highest performing portable charger we have tested.

Durability
Durability for iBattz BattStation Optimus is average. Make no mistake: this is a consumer-grade device, not specifically designed for military-grade impact or water resistance. Still, the BattStation uses rugged high-density plastics, and weathered our durability tests well compared to some lower-priced competitors. Overall it is a well-made device, and well suited for general/everyday use and leisure travel.

Features
In terms of features, the BattStation offers both 1 and 2.1 amp USB charging, integrated power level indicators, and an integrated emergency LED flashlight. 

Value
The iBattz doesn’t rank as high as some other competitors in terms of power-per-dollar spent, but is above average for value. Though it may cost more than budget devices, the BattStation’s outstanding power and battery life represent money well spent.

Gear Institute Battery/Power Test Results 
Discharge rate:.25% per minute

Overall battery life:1248 minutes

– Per cubic inch:90.2 minutes

– Per ounce:111.43 minutes

– Per cubic inch/ounce:8.05 minutes

– Per dollar:12.48 minutes