Last updated: 16/10/2022

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Welcome to our big rechargeable battery test 2023. Here we present all the rechargeable batteries we have tested in detail. We have compiled detailed background information and added a summary of customer reviews on the web.

With this, we would like to make your purchase decision easier and help you find the best rechargeable batteries for you.

You will also find answers to frequently asked questions in our guide. If available, we also offer interesting test videos. Furthermore, you will also find some important information on this page that you should definitely pay attention to if you want to buy rechargeable batteries.




Summary

  • Rechargeable batteries or accumulators are particularly useful because you can easily recharge them after a single use and use them an infinite number of times.
  • In the case of rechargeable batteries, there are many batteries from different manufacturers with different characteristics. Also charge these batteries according to the correct procedure to ensure the longest possible life.
  • The charging current, durability, tent voltage and self-discharge are important quality criteria that you should consider when buying rechargeable batteries.

The Best Rechargeable Batteries: Our Picks

Guide: Questions you should ask yourself before buying rechargeable batteries

You can find rechargeable batteries in many shops and online. (Image source: pixabay.com / Photoshot)

What are the different types of rechargeable batteries?

Here we show you an overview of the types of rechargeable batteries so that you can better find your way through the battery jungle.

Type Brief description
Micro rechargeable batteries and Mignon rechargeable batteries For small electronic devices (e.g. remote controls), voltage of 1.2 V or 1.6 V and capacities of up to 1100 mAh (AAA) or 2750 mAh (AA)
Baby (C) rechargeable batteries Somewhat larger than Mignon rechargeable batteries, capacities of up to 5500 mAh at a voltage of 1.2 V, mostly available as NiMH rechargeable batteries
Mono (D) rechargeable batteries Mainly used in powerful devices (radios or larger toys), large capacities of up to 11.000 mAh
9 V block rechargeable batteries Capacities of up to 500 mAh (smoke detectors or measuring devices)
Battery packs High-capacity energy source, capacities of up to 2600 mAh and voltages of up to 14.8 V
Home energy storage Composed of several rechargeable batteries and using lead-gel technology Capacities of up to 330 Ah and voltages of up to approx. 55 V or alternatively with Li-Ion technology with battery capacities of 116 Ah
Solar batteries Individual elements in large energy storage units, various designs (e.g. lead-gel or lead-fleece) with capacities of up to 330 Ah and voltages of up to 12 V, various connections available for the system
Lead-acid batteries Special areas of application such as safety technology, industry or the use of measuring instruments, capacities from 0.8 Ah to 575 Ah

How do I charge rechargeable batteries correctly?

Nowadays, there are many rechargeable batteries, or accumulators (accumulators), which are now widely available.

In order to get the longest life possible, it is advantageous to charge them properly. Below you will find important information about the charging process of rechargeable batteries.

Many devices already have rechargeable batteries, such as a smartphone or notebook. Optimal charging is therefore of particular importance so that you can use your product for as long as possible.

However, make sure that you don’t recharge the battery every time you use it, because then it will already be discharged by the next time you use it and you won’t be able to use it as long as you had planned.

It is best to charge the battery of your device before using the product.

To ensure a long life, the battery should not be completely full and not completely discharged. In summary, it is best to aim for partial discharge and partial charging.

However, one should not forget to fully discharge and also fully charge the battery over time.

How long do rechargeable batteries last?

The durability of batteries varies greatly and depends on many external factors, such as the construction of the battery itself, the use and also the storage of the battery.

It is noticeable that the durability of batteries increases over time, but it is not possible to make a general statement.

Dr. Rüdiger PaschottaPhysiker
Small devices that are operated with conventional batteries can also be replaced with rechargeable batteries. In general, the charging time of batteries always depends on the current.

The stronger the current, the shorter the charging time. Be aware, however, that the shorter charging time can also shorten the life of the rechargeable batteries.

It also requires more energy. So only charge them when it is really necessary.

(Source: energie-lexikon.info)

For example, lithium batteries have a long shelf life of ten to almost 20 years, while alkaline batteries last between five and ten years. Below you will find an overview of some battery types and their lifetimes.

Type Lifetime
Lead-acid battery 5-8 years
Lead-acid battery 4-6 years
NiCd battery 15 years+
NiMH battery 7-10 years
Li-ion battery 10-15 years
LiPo battery 7-10 years
NiFe battery 20-60 years

How often can I recharge a battery?

When charging, you should pay attention to correct charging. Generally speaking, many modern rechargeable batteries nowadays have a long service life of over 2000 charging cycles.

You should pay attention to optimal charging and use an appropriate charger. If there is a residual charge of 20%, for example, the battery should be recharged and now and then a deep discharge is necessary.

Decision: What types of rechargeable batteries are there and which is the right one for you?

Basically, you can distinguish between three types of rechargeable batteries for home use:

  • Ni-MH (nickel-metal hydride rechargeable battery)
  • Ni-Cd (nickel-cadmium accumulator)
  • Li-Ion (lithium-ion rechargeable battery)

Due to the different construction and chemical composition, the way these accumulators work is different in each case.

Therefore, there are advantages and disadvantages with each of these types of construction. Depending on your use and preferences, certain batteries are best suited for you.

In the following section, we would like to introduce you to the individual types in more detail to make your purchase decision easier.

For this purpose, we have provided you with the most important information and describe the individual advantages and disadvantages that arise when using the batteries.

Apart from these three types of rechargeable batteries, there are other types of rechargeable batteries.

However, these are very specific types that are not commonly used to power home appliances. Therefore, in this section, we will not go into further detail about these types or describe them in more detail.

What are the characteristics of Ni-Cd (nickel-cadmium) accumulators and what are their advantages and disadvantages?

The nickel-cadmium accumulator is a battery that is known for its long service life.

Due to the high cadmium content in the cell, this type of accumulator was banned in the EU for private use as early as 2009, with some exceptions.

Advantages
  • Long life
  • No lazy-battery effect
Disadvantages
  • Memory effect
  • High environmental impact

However, the nickel-cadmium accumulator suffers from the so-called memory effect. This effect can occur with very frequent partial discharges and causes a loss of capacity of the battery used.

In the worst case, this condition can result in total failure.

What are the characteristics of Ni-MH (nickel-metal hydride) rechargeable batteries and what are their advantages and disadvantages?

The nickel-metal hydride accumulator is an accumulator that is primarily known for its high charging capacity.

Unlike the nickel-cadmium accumulator, this accumulator does not suffer from any memory effect. This means that the battery does not need to be discharged before recharging.

Advantages
  • No memory effect
  • Low environmental impact
Disadvantages
  • Lazy battery effect
  • Tends to overheat

However, the nickel-metal hydride battery suffers from the so-called lazy battery effect. This battery inertia effect is responsible for a reduction in performance occurring after a few charging cycles.

However, the condition can be eliminated by a few complete discharge and recharge cycles.

What are the characteristics of Li-Ion (Lithium-Ion) rechargeable batteries and what are their advantages and disadvantages?

The lithium-ion accumulator is a battery that is now found in almost all modern technical multimedia devices.

Not only smartphone developers but also game console manufacturers rely on this type of battery. A major advantage is the low self-discharge of the battery.

Advantages
  • No memory effect
  • High charging capacity
  • Low self-discharge
Disadvantages
  • Relatively expensive
  • Lower service life

Known sub-types of the lithium-ion accumulator include the lithium-polymer accumulator (Li-Po) and the lithium-manganese accumulator (Li-Mn). These accumulators are popular for mobile phones, MP3 players and – in large form – also for electric cars.

Buying criteria: Use these factors to compare and evaluate rechargeable batteries

In the following, we would like to show you which factors you can use to compare and evaluate rechargeable batteries.

This will make it easier for you to decide whether a particular device is suitable for you or not. Make sure you pay attention to the following points before buying rechargeable batteries.

In summary, these are:

  • Charging current
  • Shelf life
  • Cell voltage
  • Self-discharge

In the following paragraphs you can read about the individual purchase criteria and how you can classify them. This will give you an initial overview.

Rechargeable batteries are energy storage devices that are used for many electronic devices. These batteries can be recharged and used again for charging. (Image source: pixabay.com / magica)

There are rechargeable batteries with different voltages and capacities, which are examined below on the basis of different criteria.

Charging current

The different rechargeable batteries have different compositions and can therefore also have different functions.

Therefore, they also have different maximum charging currents or different charging cycles. The higher the charging current, the faster the device can be charged.

Accordingly, the speed at which a device can be charged is influenced on the one hand by the capacity of the battery, but also by the charger.

Durability

How long a battery can be used depends on the one hand on how it is used and on the construction of the battery itself. Durability is also of particular importance for rechargeable batteries.

Of course, you only want to buy rechargeable batteries that do not show a defect after the first use, but also have a longer time available for recharging. That is why we have examined the different battery runtimes.

Did you know that the first rechargeable batteries were used to light up train carriages?

When the iron wagons stopped at a station, the lights in them were powered by rechargeable batteries.

Cell voltage

Another value that is of interest and can be compared for rechargeable batteries is the cell voltage. We would also like to give you helpful information about the cell voltage of the individual batteries.

But what is the cell voltage? It indicates the voltage of a single battery cell. This value depends on the construction of the batteries and the material used for the batteries.

Self-discharge

Self-discharge of rechargeable batteries means that batteries or rechargeable batteries can discharge even if they are not being charged.

The speed at which the battery discharges itself depends on the functions of the battery. However, self-discharge occurs with every battery and can therefore not be completely avoided.

Basically, the higher the self-discharge of your battery, the greater the loss of energy. The battery therefore loses part of its stored energy after some time without use.

Therefore, when comparing batteries, the self-discharge is of particular interest and you should definitely pay attention to it before buying.

Facts worth knowing about rechargeable batteries

How should rechargeable batteries be disposed of?

Rechargeable batteries must not be disposed of in household waste, as they contain hazardous substances. They can be handed in at retailers or taken care of in collection boxes for portable batteries, which are available in almost every supermarket nowadays.

How long have rechargeable batteries been around?

Did you know that the development of rechargeable batteries goes back to the 19th century?

The scientist Gaston Planté developed the “lead-acid battery” in 1859. This could be charged by feeding in a return current.

The research and use of the rechargeable battery began in the 17th and 18th centuries. Alessandro Volta and Luigi Galvani are personalities of the electrochemical energy storage.

Volta developed the first battery around 1800, and the first rechargeable battery was invented by the French physicist Gaston Planté in 1859.

Image source: pixabay.com / PublicDomainPictures

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