How long can Omnicharge charge your laptop?Updated a year ago
This question involves some complexity due to the variable power consumption of your laptop, depending on whether you're gaming or simply browsing the internet. This variability impacts the time and percentage of charge that Omnicharge can provide to your laptop.
We adopt a more objective approach to simplify matters by comparing Omnicharge's battery capacity to the laptop's internal battery. This also takes into account the efficiency losses in both Omnicharge's AC conversion circuits and the laptop's power adapter. The equation for calculating the charge percentage is as follows:
Charge Percentage = (Omnicharge's Battery Capacity / Laptop's Internal Battery Capacity) * (Omnicharge's Conversion Circuits Efficiency) * (Laptop's Power Supply Efficiency)
For instance, let's consider the Omni 20+ and the 15'' MacBook Pro (2019 model). The Omni 20+ has a battery capacity of 71Wh, and the 15'' MacBook Pro has an internal battery capacity of 83.6Wh. Both the Omnicharge's conversion efficiency and the 15'' MacBook Pro's power supply efficiency is approximately 90%. Plugging in these values into the equation yields:
Charge Percentage = (71Wh / 83.6Wh) * 90% * 90% = 0.68
This implies that the Omnicharge can charge the 15'' MacBook Pro up to around 68%, assuming the laptop is either turned off or in sleep mode. However, using the laptop while charging will influence this calculation.
Moving on to the USB-C output:
One of the benefits of the USB-C output is that you don't need to contend with the efficiency loss of the laptop's power supply. Thus, the equation simplifies to:
Charge Percentage = (Omnicharge's Battery Capacity / Laptop's Internal Battery Capacity) * (Omnicharge's Conversion Circuits Efficiency)
Taking the Omni 20+ and the 15'' MacBook Pro as an example:
Charge Percentage = (71Wh / 83.6Wh) * 90% = 0.76
This signifies that the Omnicharge can charge the 15'' MacBook Pro to about 76%. Notably, this is 8% more compared to charging from the AC outlet!