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Ranking ładowarek do akumulatorków Ni-MH oraz Li-ion
Koniec roku to tradycyjny czas podsumowań. Bazując na naszych danych sprzedażowych za rok 2024, dotyczących sprzedaży detalicznej na hurt.com.pl oraz całkowitej sprzedaży obejmującej także sprzedaż hurtową, przygotowaliśmy dla Was subiektywny ranking ładowarek akumulatorków Ni-MH oraz litowo-jonowyc ...
2024-11-26
I have a new charger with mAh measurement – does this mean that I can check the capacity of the battery?
Unfortunately, not always. The answer to this question is not clear-cut, because the simplest testers or chargers can only measure mAh from the charging process. If our charger does not have a dedicated discharge (load) or testing function, its mAh measurement will never be synonymous with the actua ...
2023-12-18
Slow or fast charging of your phone or smartwatch? What influence do we have on the charging speed (and life?) of the Li-ion battery in a smartphone, etc.?
A large number of charging standards, standard chargers, slow chargers, fast chargers, Quick Charge, Power Delivery, PPS... You can certainly get lost in the current charging technologies of mobile devices, but it is worth knowing the basic principles of operation as well as the impact of the charge ...
2023-10-10
Are my rechargeable batteries already used up? How to assess the condition, condition and age of your rechargeable batteries?
The problem is complex, and the answer is of interest to both users and sellers who face complaints from their customers.
We will try to help everyone interested in this topic. ...
2023-09-19
The higher the capacity of the battery, the better?... Do not necessarily
When choosing rechargeable batteries, the main criteria for our customers are the capacity, possibly the brand and, of course, the price. It is common knowledge that the higher the capacity of such a battery, the better. Such batteries are also clearly more expensive than potentially weaker/less cap ...
2023-09-19
How is it that the charger has a 1A power supply, and the charger manufacturer also provides charging 4 batteries with 1A – after all, this gives a total of 4A?!
Newly minted users of chargers may have doubts when their new, advanced charger for Ni-MH batteries (popular fingers) is supposed to charge 4 batteries with 1A current, while it is equipped with a power supply with a current capacity of 1A. After all, 4 rechargeable batteries charged with 1A require ...
2023-08-18
Another great study of battery and rechargeable battery performance? - Watch out for the 7 deadly sins committed by testers. When is a test reliable/valuable? Check out our cheat sheet.
On the Internet we can find a large number of battery and accumulator tests. Practically every few weeks we can come across a new news, video, or mention of further tests. Often, the winner of one ranking performs very mediocre or even poorly in other tests. What is the reason for such a large dispe ...
2023-01-25
AA, AAA and other Ni-MH batteries, Li-ion 18650 and similar batteries - how to interpret the capacity and number of charge cycles given in the specifications
When we buy a rechargeable battery with a capacity of 2600 mAh and a certain number of charging cycles of 500, we are convinced that with occasional use we will be able to enjoy its maximum performance for many years. We often treat the given capacity values or the number of charging cycles as guara ...
2022-10-03
Another test of everActive batteries and accumulators in an accredited Swedish testing laboratory!
everActive batteries and rechargeable batteries are subjected to cyclical laboratory tests. In 2022, another test was carried out, performed by a certified research unit - Intertek Semko AB.Intertek Semko AB, located in Sweden, is an elite laboratory dedicated to, m.in the testing of batteries and a ...
2022-08-17
Another test of suspiciously cheap Eneloops bought on a well-known shopping platform
Just like last year, we decided to test suspicious rechargeable batteries described as Eneloop Pro, offered through the largest shopping platform in Poland. The price – really "bargain" – over 30% lower compared to the current prices from the official distribution – what could have ...
2022-07-27
Eneloop Pro vs fakes - self-discharge test after one year
Do you remember our test from a year ago, where we tested "bargain" Eneloop batteries? The products turned out to be counterfeit, with a yield about 25-40% worse than the originals available in our warehouse. We supplement our test with a self-discharge test – measuring capacity after 13 month ...
2022-07-15
Internal resistance of the battery / rechargeable battery - an important parameter of the power source
The capacity of a battery expressed in milliampere-hours (mAh) is the main indicator by which most of us compare individual batteries or rechargeable batteries.
Unfortunately, in many cases it is not an ideal unit for assessing the efficiency of a given power source, especially for disposable batte ...
2022-05-11
How to understand the different values of mAh capacity in the specification of a rechargeable battery?
It often happens that when analyzing the technical data of the battery we are interested in, we see, for example, 2 different values of capacity expressed in milliampere-hours - mAh. Why these differences? What is typical, minimum, maximum, nominal, rated capacity? ...
2022-05-11
Have you been doing it wrong all your life? - How to properly install batteries and rechargeable batteries?
Has it ever happened to you that newly installed batteries or charged rechargeable batteries do not give any sign of life?The basket in which the batteries were installed has started to melt, or maybe there has been a battery spill in the power compartment of your device? In this article, we explain ...
2022-01-25
How to correctly measure the capacity of a 1.2V or 18650 3.7V AA battery in chargers with capacity measurement?
There is currently a rash of different chargers on the market, which, according to the manufacturer's assurance, allow you to measure the mAh capacity of our batteries.
Are you sure? In our article, we describe the most common pitfalls, doubts and mistakes made by users when measuring the capacity ...
2022-01-13
How to use nickel-metal hydride batteries correctly?
We point out simple mistakes that often occur, which as a result lead to faster wear of the batteries. Have you ever had new, branded rechargeable batteries last much shorter than they should? Read our guide and perhaps you will avoid disappointment later. ...
2022-01-05
What is the actual capacity of the everActive 9V Lithium+ Professional Line Li-ion battery - 500 mAh or maybe 1000 mAh?
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? ...
2021-09-30
AA R6, AAA R03 and other rechargeable batteries made in Ni-MH technology - assessment of their charge level before use. How to interpret charging progress indicators in chargers?
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 ...
2021-09-23
In which devices can we effectively use AA and AAA 1.2V batteries?
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 ...
2021-09-09
Power banks and smart bands - why is it difficult to get 100% charge with a power bank?
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 ...
2021-07-23