With so many devices running on finite lithium-ion power, most everyone has a portable battery bank of some sort. With excellent features and compatibility, the Shargeek Storm 2 Power Bank is looking to take this industry, well, by storm Read More
From their website:
A 25600 mAh high density battery that can be recharged in just 1.5 hours and it supports various charging protocols (QC/PD/PPS etc).
https://www.shargeek.com/products/storm2
It depends on what voltage you are using. Divide the voltage into the watt-hours to determine the answer. E.g. 5 volts. 93.5/5 = 18.7 Amp-hrs. Or this charger can supply 18.7 Amps at 5 V for an hour before depleting. The real advantage of this charger would seem to be its wide voltage output allow it to supply power to a variety of devices.
It doesn't really matter as mAh is not a measure of energy storage capacity but rather a measure of sustained current over time. In order to know energy storage capacity you need Wh. This distinction becomes even more important when powerbanks are able to supply power at different voltages.
For this device the energy storage capacity is 93.5Wh.
In the olden days of USB there was only 5V. Simple. Now there's 5V, 9V, 12V, 20V, 28V, 36V and 48V dependent on the standard. More specific information here
Does your utility company specify kAh or kWh when they specify your electricity usage?
The mAh madness has to stop! :)
It uses 18650 cells. They are welded together (like in most powerbanks). It is possible to disassemble the powerbank and everything is connected via plugs. So it’s theoretically possible if you have the skills to do so. There is no glue as far as I can see.
the only difficulty is removing the display frame, I have not attempted this yet.
Yes it does, but be careful using it with things without a battery like a Raspberry Pi. If you ever plug anything else in, power is paused as it will renegotiate power each time anything is plugged in.
Hello,
On the variable DC output: what is the maximum wattage output? What is the max Amperage output? What size connector is that barrel jack (2.1 mm, 2.5mm, etc)?
As for charging: Does this have an input for charging that accepts a varied range of input voltage, if so what is the range of voltage you can charge this with? Which connection(s) can I use as input for charging this device?
Thanks.
Shargeek's website (https://www.shargeek.com/products/storm2) claims 75W in/out via the 2.5mm barrel jack. It also claims 100W in/out via the port labeled USB-C1. Those are the only 2 ports that can charge the battery pack. I have not been able to find anything on max Amperage output.
It doesn't support any AC input, so you can't plug it into any kind of outlet to charge it. You need to charge it with a DC charger. It seems to support up to 100W charging over USB-C, so a 100W USB-C PD charger would be ideal. It also supports power input on the 2.5mm barrel jack, but I don't see voltage specs anywhere, and it's slower than PD anyway, so I wouldn't risk it.