The modern everActive battery, which is the equivalent of a typical 9V block battery, has a declared capacity of 500 mAh, but the inquisitive will notice that it consists of two Li-ion cells with a capacity of 500 mAh each.So shouldn't the total capacity of this battery be set at 1000 mAh? ...

The problem with alkaline batteries is that in devices with high power consumption, they are very often inefficient and discharge quickly (the voltage drops very quickly) and need to be replaced frequently. Ni-MH batteries, on the other hand, are ideal for devices with high power consumption. Unfort ...

We are used to comparing the value of capacity, expressed in milliampere-hours [mAh], which is given in virtually all commercially available batteries. However, on disposable batteries, in particular typical LR6 AA, LR03 AAA batteries, specialized batteries, or those dedicated to hearing aids, such ...

Powerbanks are devices that have achieved great popularity in a few years. Manufacturers outdo each other by adding new features to devices, increasing their power, increasing their capacity, etc. The mentioned capacity of the powerbank is the main criterion for users according to which they choose ...

This time in our lab we decided to thoroughly test the capabilities of block alkaline batteries, Ni-MH and Li-ion batteries in size 9V (alkaline battery designation 6LR61). The test consisted in measuring capacitance, energy and recording discharge curves with currents of 50 mA, 100 mA, 200 mA and 5 ...