TMB-4K Power Bank


New product

White appears in thin and lightweight 4000 mAh mobile battery convenient to carry! It supports 2.5 A output for smartphones and tablets.

This product can charge the smartphone about twice, and it is the capacity suitable for the day use. We are realizing a phenomenal thin and lightweight size which is not traditional such as a thickness of 9.7 mm and lightness of 110 g.

More info


"Easy to carry" is one of the points, and it is a product that can be accepted in a new life when traveling.

Also, if you use a model that supports high-speed charging, it is compatible up to 2.5 A of output and will charge quickly at super high speed.

Charging to the main body compatible to 2.1 A, it can charge at twice the speed of general mobile battery, and the charging time to the battery itself can be charged quickly. (Fully charged in about 2.5 hours)

It is also recommended for novelty products.

Simultaneous use of charging the battery body and charging smartphone etc. is possible.

(For simultaneous charging, please press and hold the power button for about 3 seconds.)

Model NumberJAN
TMB-4KWH (White)4533239032178

Battery capacity3.7V / 4000MAh  (lithium polymer)
USB inputDC: 5 V 2.1 A (maximum)
USB outputDC: 5V 2.5A (maximum)
Body dimensionsL118 × W 67.5 × H 9.7 mm
Body weightApproximately 110 g
Time for chargingAbout 2.5 hours (charging with 5V/2.1A output USB adapter. *sold separately)
Number of cyclesApproximately 500 times (depends on usage circumstance)
accessoriesmicroUSB cable, manual and warranty