AA batteries and accumulators, due to their size, are very popular, commonly used sources of energy, utilized in everyday devices. However, in the market, one can find not only basic alkaline cells or NiMH batteries. In this article, we will describe less common variants that have specific propertie ...

Unfortunately, not always. The answer to this question is not straightforward, as the simplest testers or chargers can only measure mAh from the charging process. If our charger does not have a dedicated discharging (load) or testing function, its mAh measurement will never be equivalent to the actu ...

A large number of charging standards, standard chargers, slow, fast, Quick Charge, Power Delivery, PPS… It is easy to get lost in the current technologies for charging mobile devices, but it is worth knowing the basic principles of operation as well as the impact of the charger used on the performan ...

The problem is complex, and the answer is of interest to both users and sellers who are dealing with complaints submitted by their customers. We will try to help all interested parties on this topic. ...

On the Internet, we can find a large number of tests of batteries and accumulators. Practically every few weeks we can come across a new news item, video, or mention of further tests. Often, the winner of one ranking performs very average or even poorly in other tests. What causes such a large discr ...

When we buy a battery with a capacity of 2600 mAh and a specified number of charge cycles of 500, we are convinced that with occasional use, we will be able to enjoy its maximum performance for many years. The stated capacity values and the number of charge cycles are often treated as guaranteed and ...

The capacity of a battery/accumulator expressed in milliampere-hours (mAh) is the main indicator by which most of us compare individual batteries or accumulators. Unfortunately, in many cases, it is not an ideal unit for assessing the performance of a given power source, especially for disposable ba ...

It often happens that when analyzing the technical data of a battery we are interested in, we see, for example, 2 different capacity values expressed in milliampere-hours - mAh. Where do these differences come from? What is typical capacity, minimum, maximum, nominal, rated? ...

Have you ever experienced that newly installed batteries or charged rechargeable batteries show no signs of life? The compartment where the batteries were installed started to melt, or perhaps there was a battery leak in the power chamber of your device? In this article, we explain what to pay atten ...

Currently, there is a surge of various chargers on the market that, according to the manufacturer's assurances, allow for measuring the mAh capacity of our batteries. But is that really the case? In our article, we describe the most common traps, doubts, and mistakes made by users when measuring the ...

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 ...

This time in our lab, we decided to thoroughly test the capabilities of block alkaline batteries, Ni-MH rechargeable batteries, and Li-ion in the 9V size (the designation for the alkaline battery is 6LR61). The test involved measuring capacity, energy, and recording discharge curves at currents of 5 ...

Lithium-ion cells are the future of powering portable and wireless electronics – they are found in smartphones, MP3 players, remote-controlled models, etc. Their characteristic features are usually small dimensions and flat or cylindrical shapes. These unassuming cells can store twice as much energy ...

Here you will find explanations of the terms most commonly used in connection with batteries and accumulators as well as chargers; do you not know what a term means or how to measure the capacity of cells? Do you not know what internal resistance is, termination current, and does the term CC/CV soun ...