Perfect as a buffer battery, for example, for a Bicycle charge controller, solar cells, etc.

I have an intensive search for a Power Bank, which can be loaded simultaneously and even gives power. The problem, however, is usually that the Power Banks Only surrender a part of the charging current, with which they are themselves loaded.

This is fortunately in this PowerBank not so: they can simultaneously be loaded, stating the full power at its terminals, even if the charging current, with which it is charged, is less. They can, for example, a smartphone with 1A Laden, even though the bicycle dynamo on which they depend, just only 100mA supplies.

In addition, many Banks Power switch off briefly or completely when they are no longer loaded itself or the charging current is too low. This does these Powerbank not - they are constant current.

It is therefore perfectly suited as a buffer battery for bicycle dynamos and solar cells - eg for charging smartphone continuously at full power or to keep in operation or to a device that does not have a battery to run continuously.

But you have the power bank once himself and back off. If you forget this, the charge controller electronics attracts still current.

Super are the adapters that are in the Powerbank case - for several smartphone and mobile phone types is a charging adapter while - only for the newer iPhones with Lightning connector and very old Nokias with thicker charging port adapter missing.

What to look for: Smartphone, tablets and co-loaded with the included cable and adapters with 1A and more - if you take a normal Micro-USB cable to drag the device only max 500mA because the USB ports of the Power bank is not so are connected to the unit noted that it may draw more. The remedy here microUSB cable, in which the data lines are shorted - this is an indication for the device that it must be a charger. To this end, the following cable or adapter may be used:

USB Adapter with shorted data lines:

Micro-USB cable shorted data lines: