AA batteries are commonly used in homes, offices, and industry – their demand is constantly growing. To meet the increasing demand, manufacturers are implementing more advanced, automated production lines. The process of manufacturing AA batteries, although seemingly simple, involves many precise st ...

Technological development means that hearing aids are increasingly using various enhancements. Such devices can very effectively improve the quality of life for people who have hearing problems. When choosing them, attention should be paid to various technical aspects, such as the power supply metho ...

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 ...

Batteries are an essential part of everyday life – they power remote controls, toys, watches, and even industrial equipment. Choosing the right type of battery can affect the comfort of using the device, its performance, and operating costs. Understanding the differences between the various ty ...

The runtime of a flashlight is one of the factors significantly affecting its efficiency and reliability. This issue is particularly important in emergency situations, as well as during prolonged use. The runtime of a flashlight is largely influenced by its power supply method, whether battery or re ...

Proper storage of batteries is very important for maintaining their optimal performance, and often even extending their lifespan. Lack of appropriate conditions can lead to premature discharge or even electrolyte leakage, which is dangerous for powered devices. Batteries come in many types and have ...

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. ...

New users of chargers may have doubts when their new, advanced Ni-MH battery charger (popular AA batteries) is supposed to charge 4 batteries at 1A, while it is equipped with a power supply rated at 1A. After all, 4 batteries charged at 1A require a total of 4A of current, right? ...

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 ...

Just like last year, we decided to test suspicious batteries described as Eneloop Pro, offered through the largest shopping platform in Poland. The price – really "bargain" – over 30% lower compared to current prices from official distribution – what could go wrong ;) ? Last year (2021) we alread ...

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 ...

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 ...

We point out common simple mistakes that ultimately lead to faster wear of rechargeable batteries. Have you ever experienced that new, branded rechargeable batteries last much shorter than they should? Read our guide, and you may avoid later disappointment. ...

Ni-MH rechargeable batteries cause much more problems when assessing the current state of charge than alkaline or Li-ion batteries.While in the case of typical disposable batteries or Li-ion rechargeable batteries, we can orientate the level of charge of the cells and their condition based on the vo ...

As you know from our other publications, 1.2V Ni-MH batteries, in particular the typical R6 (AA) and R03 (AAA) batteries, function very well in most devices, being an ecological and economically justified replacement for disposable 1.5V batteries. On a daily basis, we use devices that tolerate worki ...

Many of you have probably experienced a situation when when trying to charge a small portable device (smart band, smart watch) from your power bank, it is difficult to get 100% charged, and sometimes the power bank turns off after just a few seconds, leaving our device discharged. Why does a typical ...

We present a practical guide that will allow you to get to know Ni-MH rechargeable batteries better. We recommend reading it to both beginners and advanced users.Have you ever had a fresh battery pack that doesn't want to charge when you take it out of the device, or maybe the charging turns off alm ...

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 ...