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Articles in this section

  • Flash Pro: World's Fastest Powerbank Redesigned (Detailed)
  • Flash Pro USB-C Tesla™ Graphene 25000mAh Power Bank For Android Users (Summarised)
  • Flash Pro Plus USB-C Tesla™ Graphene 25000mAh Power Bank For Apple Users (Summarised)
  • Instruction Manual For Flash Pro and Flash Pro Plus
  • How to calculate what charge % the Flash Pro & Flash Pro Plus Powerbank can achieve for my device
  • There is an issue with the Apple Watch Charger on my Flash Pro Plus
  • Wireless Charging Does Not Work
  • The powerbank is draining when the Apple USB-C to Lightning cord is left plugged in

How to calculate what charge % the Flash Pro & Flash Pro Plus Powerbank can achieve for my device

 

We’d like to advise that there is always a conversion loss when the power is sent from a powerbank to the device being charged and this is normal for every charger.

 

If you’re unsure, here is how to calculate what charge % the Flash Pro and Flash Pro Plus Powerbank can achieve for a specific device. 

 

Let's use an 87W MacBook Pro 15" as an example. The best way to answer your question is using the following formula which calculates the conversion of watt hrs to mah whr = mah/ V*1000*70% (output efficiency at 20V) . 

 

The Flash is 92.5whr/3.7v x 1000 * 70% (efficiency at 20V) = 17500mA. 

The Macbook Pro 15" is at 0% switched off whilst charging  = 83.6 whr = 22,000mAh = 79%. 

The Macbook Pro 16" is at 0% switched off whilst charging = 99.8 whr =  26,972 mAh = 64% 

The Ipad Pro 11 is at 0% switched off whilst charging = 29.37 whr = 7,937 mAh = 2.2 times

 

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Related articles

  • Flash Pro: World's Fastest Powerbank Redesigned (Detailed)
  • There is an issue with the Apple Watch Charger on my Flash Pro Plus
  • The powerbank is draining when the Apple USB-C to Lightning cord is left plugged in
  • Flash Pro Plus USB-C Tesla™ Graphene 25000mAh Power Bank For Apple Users (Summarised)
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