Some of you might have devices that take longer to charge than to deplete. For example, if you have a device that takes 4 hours for the battery to run out and 15 hours to recharge. How do you use it non-stop? I have the answer. The answer is basically a modification of the duty cycle theorem on wikipedia.
But make sure that while most —devices that are charged by plugging them in rather than removing the batteries— (such as bluetooth headsets/headphones and cell phones and many other devices not listed) are safe to leave plugged in and left unattended, —BATTERIES THAT HAVE TO BE REMOVED FROM THEIR DEVICES— SHOULD NEVER BE CHARGED UNATTENDED UNLESS —THE CHARGER AND THE BATTERIES— DOCUMENTATION EXPLICITLY STATES THAT IT IS SAFE TO DO SO.
Before I continue, let me remind you that this applies to both single batteries, or groups of batteries.
Some of you may be thinking, "why don't I use multiple batteries and multiple chargers?" That's correct. But we need to know how many batteries and how many chargers we need.
Here's how we figure it out:
We'll use c the variable for our charge time and u and the variable for our usage time. First we use the formula:
(c+u)/u then we round up if there is a remainder. So in this cause c=15 and u=4 let's plug it into our formula:
(15+4)/4=4.75
We will round up 4.75 and get 5 for the amount of batteries.
Also the charger amount is the battery amount-1.
Now if you don't believe me, I will show you why a later blog, but just remember, in that later blog, we will use a as the charger amount and b as the battery amount.
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