The thing is, it does not matter how much charge the battery holds, it does matter how much energy it holds. Without knowing the Voltage the Ah is useless.
Sorry, but you are simply wrong. Simple math says that you are wrong.
You can buck or boost convert nearly any voltage to any other voltage.
Then measure the current output of the battery, boom you have battery life.
Also electrical charge can be used in many, many very valuable calculations without involving voltage at all.
Let’s take an arbitrary example with an arbitrary battery powered device. Let’s say the battery is somewhere between 1V and 10000000V. You can’t measure it because you might blow up your multimeter.
You know that the battery is 5000mAh. You can safely measure that all of the circuitry is draining 1000mA because sense resistors or contactless magnetic current measurements don’t have anywhere near dangerous voltages. You know that the battery will last about 5 hours. What is the voltage? Doesn’t matter.
Yes, charge and the flow of charge is not the entire story, but to say it is useless or does not matter is just a straight lie. It is fine if you don’t understand electronics, but then don’t spit out misinformation.
Yes Watt-hours would give a more complete picture to slightly tech-inclined consumers (makes 0 difference for 99% of consumers), but then it returns to not mattering because you can do the 5s calculation yourself because single cell lithium batteries are overwhelmingly 1 nominal voltage.
Literally 90% of calculations related to efficiency are JUST as valid using mA as W.
Your device uses 12mA at idle with a 5000mAh battery has the same relevance as your 18.5Wh battery using 45mW at idle.
I am ONLY speaking from a consumer position and for those Wh is more useful.
The consumer looks on device a and on device b and then determines how often he can recharge its device. With Ah you cannot do this unless you know the Voltage, with Wh you can make this decision without any further knowledge.
Yes this does not include battery life or conversion of efficiency. But a cunsumer measures nothing he looks at the lable.
It is fine if you don’t understand electronics, but then don’t spit out misinformation.
Btw. no need to insult me. I have never put out misinformation, I may have not stated enough that I am viewing this as a consumer.
Please explain to me what the difference is between battery life if you have a 5000mAh battery and an 18Wh battery.
Please state the calculation that you would use to “determine how often you have to recharge” that is valid for Wh and not for Ah. I am all for it. If you can cite a single source where the manufacturer gives a specification that would give battery life in Wh, and not in Ah, I will concede the entire argument and say that you were right the whole time in every comment make a note that you were right. Please show your calculation work.
The thing is, it does not matter how much charge the battery holds, it does matter how much energy it holds. Without knowing the Voltage the Ah is useless.
This is patently, objectively misinformation and completely false. That is a direct quote of your words, today. That was your last comment. I have already laid out multiple examples of how Ah is a useful measurement and what you can do with it. Therefore, it is misinformation. It is not disinformation, but stating untrue things as fact is misinformation, even if you have no idea you are wrong.
