Calculating the energy capacity of a lithium-ion battery?

Question

Rechargeable batteries

How are the energy consumption of a lithium-ion battery and its mass related. maybe there is a formula?

Answer 1

Maybe there is such a formula somewhere, but I have not seen it.
But you can get this specific parameter yourself. To do this, you need to take several batteries of different sizes and capacities, without cases and controllers (only a metallized plastic bag should be present as a case, because all kinds of weights add weight and thereby worsen accuracy). The more you type, the more statistically accurate the result will be. It is good if the batteries are new, with a capacity not reduced by long-term operation. The well-known 18650s should not be taken, since their non-removable iron case will add a lot of extra weight.
Then you measure the capacity of each battery (for example, with the well-known IMAX B6 device) and weigh it on an accurate scale. Having received these figures for the entire array of tested batteries, sum up all weights and all capacities, then divide the second sum by the first and thus obtain the desired result - the average specific capacity (milliamp hours per gram).
UPD: I googled a little and found the numbers I was looking for - about 150 mAh / g for serial batteries and a record 300 mAh / g obtained in laboratory conditions.