How to Make Dying Batteries Work How to Make a Dead Battery Work Again
A statement of this devilish nature during the middle ages would have earned its writer a called-for at the stake. The mere notion of a "battery" would take probably been in the realm of druids and witches, and reviving annihilation expressionless would have been…well, plenty said, information technology is the 21st century.
I volition digress today a little and talk about your average primary (i.e., non-rechargeable) bombardment, the blazon that Energizer, Duracell, and their competitors sell billions of every year, all of which wind up in the trash bin or recycling centers — excepting the batteries that sit on ane's desk for ages as if somehow they volition disappear on their own. How do these batteries die, and when they do, are they really dead? Let'due south explore.
For the purpose of this discussion, let's focus on Alkali metal batteries. The typical ones, like AA or AAA, are nominally rated at ane.five 5. In other words, when they are fresh and unused, one would measure 1.5 V at the battery terminals. As the battery is inserted into a gadget and gets used, the voltage at the terminals drops, and fast it does. As the voltage drops, it reaches a signal where it is no longer sufficient to power the electronics in the gadget. Ofttimes, these gadgets, such equally toys, utilize inexpensive electronics. This means that these electronics do non employ the most modernistic electronics circuitry. This is parlance for electronics that are not low-voltage and low-power. In other words, these inexpensive electronics draw more current than they demand to, and they operate at higher voltages than they should — all in the spirit of saving costs. But these operating requirements place a bigger brunt on the battery, the result of which the battery'due south voltage drains chop-chop and meets an early death.
Information technology should exist credible to the reader that the finish of the battery — its "death" — is now defined as the time at which its terminal voltage is no longer able to ability the electronics. This is somewhat subjective because that clearly depends on the quality and sophistication of the electronics in your gadget. Usually, many cheap electronics begin to cease operating somewhere between 1.2 V and i.35 V. Very rarely, one may run across electronics get lower in operating voltages simply such gadgets would nigh likely be associated with higher price points, and could very well just apply an embedded lithium-ion battery to projection an paradigm of a "skilful" product.
Looking at the Energizer E91 specification sheet, one immediately can observe that this battery has a life of less than 2 hours to hit 1.three V, and 3 hours to hit 1.2 V (bold a discharge electric current of 250 mA). At this betoken, the electronics begin to stop operating; the cheap display on your kid's toy begins to fade, and voila, you pronounce the battery dead and discard it.
Just wait! Is it really true that the battery is dead? Again, it is a matter of definition. For a helpless parent trying to appease a screaming child, the bombardment is Dead. Merely to some engineers and entrepreneurs, they will exist quick to observe that this battery continues to hold a lot of charge and energy. Looking at the voltage chart above for the E91, the area nether the red bend is the amount of "free energy" that the battery holds. So information technology becomes immediately clear that if the bombardment is declared expressionless at ane.2 V, it continues to agree near 75% of its original free energy. This is a lot!
So the magic question becomes how to access this extra energy well? and how to do and so in a cost-constructive and reliable manner? This is where I will put a plug for the company Batteroo Inc.. The team figured out an elegant solution to put a very thin reusable sleeve around the presumed dead bombardment with low-power electronics that volition "boost and regulate" the raw final voltage of the battery dorsum up to a higher voltage, say 1.5 V, sufficient now to operate a gadget. This has an effect of reviving this "dead" battery and essentially extending its life. I love clever and uncomplicated ideas! Batteroo'southward challenge is now to fight off the battery vendors who will not be pleased with selling fewer batteries.
Source: https://www.qnovo.com/blogs/reviving-a-dead-battery-really
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