Description
Romoss Simple 20 20000mAh Dual Output Power Bank – White
Stock Note
This product is IN STOCK with us physically, so you can pick it up the same day you buy it.
If you want it delivered it can be delivered in 2 – 3 days nationwide.
Charge your phone and tablet with the compact Romoss Simple 20 20000mAh Power Bank. This power bank offers a wide range of compatibility with its three input ports, a Micro USB port, an Apple Lightning port, and a Type-C port. It only gets better from there, with its dual USB outputs that allow for 1A or 2.1A power output, ensuring a fast charge for your devices.
Raspberry Pi Server Backup Power Solution
This is an exceptional device to power your Raspberry Pi and other IoT devices as well.
According to actual Raspberry Pi power measurements, the Model 3B+ consumes about 520 mA.
The Romoss has a 5V USB output, so that then becomes 0.52 A * 5 V = 2.6 W
Next, we have to consider the fact that the mAh rating of a power bank refers to its nominal cell voltage (which is 3.7 V for a typical lithium-ion-based power bank), and not to its output voltage of 5 V. Thus, a 20 Ah power bank has a capacity of about 20 Ah * 3.7 V = 74 Wh
The expected runtime for your Raspberry Pi therefore is
74 Wh / 2.6 W = about 28 h
The actual runtime will however highly depend on many unpredictable aspects like CPU usage, WiFi usage, connected hardware, etc, so we’ll just assume that the actual runtime will be at least 50% of the expected runtime.
This also gives us a safety margin.
28 h * 50 % = about 14 h
So, the actual runtime of your Raspberry Pi should be somewhere between 28 h and 14 h, depending on your setup.
YMMV.
Powering a Raspberry Pi is pretty straightforward. It always depends on the Raspberry Pi’s model that is used and the load connected to it, but we can assume as an approximation, that a 5V/2A power bank should be enough to power most of them.
FEATURES:
- 20000mAh Capacity power bank
- Handheld design
- 5V 2.1A charging
- Simultaneous dual device charging
- Input ports – Lightning, Micro USB, Type-C
- Output ports – Dual USB
- LED Charge indicators
SPECIFICATIONS:
- Battery Type: Lithium Polymer
- Battery Capacity: 20000mAh/(74Wh)
- Input: 5V 2.1A (Lightning/Micro USB/Type-C)
- Output: 5V 2.1A | 5V 1A
WHAT’S IN THE BOX:
- Romoss Simple 20 20000mAh Power Bank x 1
- User Guide x 1
| Brand | Romoss |
|---|---|
| Colour | White |
| Warranty | 12 Months |
| Capacity (mAh) | 20000 |
| Input Interface | Lightning, Micro USB, Type-C |
| Output Interface | USB |
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