Best Akku 4ah 2026

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Last Updated - 27.03.2026

Best Choice

01

Einhell

Original Einhell Power X-Change Starter Kit Battery and Charger (Lithium Ion, 18 V, 2 x 4.0 Ah Battery and Twincharger, Suitable for all Power X-Change Devices)

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9.8

Exceptional

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Two 18 volt PXC batteries can be charged in parallel in one charge cycle, so the lithium-ion batteries are quickly ready for use again.
The situationally adjusted charging cycles protect the PXC battery with permanent battery monitoring, which ensures the optimum charging process. Station-dependent charging significantly extends battery life.
The high level of safety is ensured by intelligent charging management. The 6-stage charging system on the charger displays the latest battery status information in real time.
The Einhell Twincharger can charge two Power X-Change batteries with just a single socket, which is an advantage over other chargers. Includes a Twincharger and two 4.0Ah Power X-Change batteries.
As a member of the Power X-Change series, any battery in the high-performance system series can be charged with the Power-X Twincharger 3 A. Every Power X-Change series device, battery, and charger is compatible with each other.

84,99 €
Value for Money

02

Einhell

Original Einhell 4Ah Power X-Change Plus Battery (18 V, Li-Ion, Universal Use for All PXC Devices, Charge Level Control, Twin Pack, Includes 2 x 4 Ah Batteries, without Charger)

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28% Off
9.6

Exceptional

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Twin pack technology - With the innovative Twin-Pack technology, two Power X-Change batteries can be coupled together. This means that 36 V devices can also be operated.
Sturdy housing - The case resists dust, corrosion and mechanical influences. The rubber coating and the recessed grip offer high impact protection and optimal handling.
Safety and performance: The battery management system monitors the parameters of the battery using a microprocessor and ensures maximum safety and maximum runtime.
Power X-Change - The 18V 4.0Ah Power X-Change PLUS batteries are part of the Einhell Power X-Change family, where all batteries, chargers and system devices can be combined.
Plus technology - The Power X-Change batteries provide all battery devices in the garden and workshop with power and endurance. Plus technology stands for extra power.
No self-discharge - The high-quality batteries resist the memory effect and self-discharge. A 3-stage LED display always provides information about the current charging status.
More power - The latest generation lithium-ion cells create 100% more power even with a more compact design and weight reduction.

79,99 € 110,95 €(28% Off off)
03

Einhell

Original Einhell Starter Kit Battery and Charger Power X-Change Volks.Battery, Lithium Ion, 18 V, 4.0 Ah Battery and Quick Charger, Suitable for all Power X-Change Devices

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9.5

Excellent

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

The rubberised housing of the battery provides a high level of shock protection and a firm grip. Built-in recessed grips make it easy to remove the battery. The charger is already prepared with built-in hanging loops for wall mounting. The maximum charging time with fast charging technology is 75 minutes.
The multifunctional Power X-Change battery system, which can be combined with one another, is suitable for cordless tools from the entire product family in the garden and workshop area. The battery system can be used universally for all devices in the Power X-Change series.
The high-quality lithium-ion cells resist battery-standard self-discharge and can be recharged during any phase without damage.
The Einhell 18 Volt 4.0 Ah PXC Starter Kit is the most powerful set in the product family, featuring a powerful 4.0 Ah battery and a PXC series charger.
Einhell's proactive battery and intelligent charging management ensures maximum safety in operation, as well as during the charging period. All battery parameters are monitored by the available components.
During charging, the cycle is continuously monitored to ensure the optimum mode. Battery life is significantly extended by the situationally adjusted charging cycles.
A three-level LED charge indicator on the battery shows the current energy reserves. The 6-stage charging system shows the current charge level in real time during the charging cycle.

29,89 €
04

Einhell

Einhell PXC Twin Pack 4.0 Ah Power X-Change Volks.Battery (Li-Ion, 18 V, 2 x 4.0 Ah, Suitable for all PXC Devices, Proactive Battery Management, Situational Adapted Charge Cycles

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9.2

Excellent

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

The charging status can be read at a glance: The three-stage LED-system provides the constant possibility of charge control.
The Einhell PXC Twin-pack 4.0 Ah battery consists of two universally applicable 18 volt batteries from the Power X-Change range and offers double power for all devices in the innovative system series.
Maximum safety is provided by Einhell's proactive battery management and all parameters of the battery are always monitored by the most modern components.
Lithium-ion cells provide more power with immunity to ‘battery-common’ diseases and resist battery self-discharge. The battery life is significantly extended by situationally adapted charging cycles.
A high impact protection and a good grip is ensured by the rubberised housing. Thanks to the adapted recessed grips, the batteries can be easily inserted and removed.

54,89 €
05

WORX

WORX WA3644 Original PowerShare Pro Battery 20 V - 4.0 Ah Li-Ion, Rechargeable, More Safety and Longer Running Time, with LED Display, Innovative Heatshield Technology, Suitable for All WORX Devices

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18% Off
9.1

Excellent

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Same battery, expandable energy: the WORX PowerShare battery is compatible with all WORX 20V, 40V and 80V tools, outdoor power and lifestyle products
Original WORX PowerShare batteries offer optimal compatibility, high safety, long-lasting performance and extend the life of your tools - for reliable power and full warranty claims
Maximum performance with higher safety: thanks to the BMS technology, the battery optimises each battery cell for maximum performance and performance and prevents damage caused by overload, overcharging and overheating
Intelligent power control: the communication technology adjusts the battery power for optimal energy delivery and maximises the performance and runtime of the tool
HEATSHIELD TECHNOLOGY Unique heat retention technology efficiently absorbs and retains heat, protects against bumps and knocks and ensures longer runtime, extended battery life and consistent, effective power output
Battery display: the built-in display shows the real-time status of the battery power and ensures that you are always informed of the remaining charge, so you can switch or charge in time if necessary

53,55 € 64,99 €(18% Off off)
06

Bosch

Bosch Professional 18 V System Battery ProCORE18 V 4.0 Ah (in Box)

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8.9

Very Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

With optimised size and minimal weight, the new cell technology offers the same performance as a 4.0 Ah standard battery
Professional 18V system. Ultimate performance. Maximum flexibility. All batteries are compatible with updated and existing Bosch Professional tools of the same voltage class
Coolpack 2.0 technology ensures 135% longer life than standard batteries thanks to superior heat dissipation
Compatible since 2008: All of our batteries fit into the new and existing Bosch Professional tools within the respective voltage class
Box contents: ProCORE 4.0Ah 18V battery, box

58,00 €
07

Bosch

Bosch Professional 18 V System Battery ProCORE18 V 4.0 Ah (in Box)

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10% Off
8.7

Very Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

With optimised size and minimal weight, the new cell technology offers the same performance as a 4.0 Ah standard battery
Professional 18V system. Ultimate performance. Maximum flexibility. All batteries are compatible with updated and existing Bosch Professional tools of the same voltage class
Coolpack 2.0 technology ensures 135% longer life than standard batteries thanks to superior heat dissipation
Compatible since 2008: All of our batteries fit into the new and existing Bosch Professional tools within the respective voltage class
Box contents: ProCORE 4.0Ah 18V battery, box

55,10 € 60,90 €(10% Off off)
08

Bosch

Bosch Home and Garden PBA Battery Pack, 18 V, 4.0 Ah, W-C, 18 V System, in Box, 1600A011T8

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8.6

Very Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Power supply for all 18 V tools. The included battery is compatible with all products of the Bosch Home and Garden green 18 V system and Bosch Unlimited vacuum cleaners
Long battery life. Ideal for extensive projects such as hedge cutting and sanding
Flexible, maximum performance and long service life for tasks around the home or garden
Excellent operating time. Perform very large and challenging DIY projects with one charge
Compatible with AL1810 CV, AL 18V-20, AL1815 CV, AL 1830 CV, AL 1880 CV/not compatible with AL 2204 CV, AL 2215 CV
Compatibility: The battery can be used with almost all Bosch 18 V home and garden tools, except PSM 18 LI and ALB 18 LI

33,99 €
09

MALUI

Parkside Performance 20V 4Ah Smart Battery PAPS 204 - Malui Bundle

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8.3

Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Smart Battery with Bluetooth - Connect via app for intelligent battery monitoring and convenient status query.
Practical LED charge indicator - Coloured display for residual capacity at the touch of a button, so you always have full control when working.
Powerful replacement battery - Original Parkside Performance 20V battery with 4Ah capacity, ideal for long-lasting power with all X20V team devices.
Compatible with all X20V Team Series devices - Universal use for cordless drills, saws, grinders and more.
Bundle with Malui sticker - Includes high-quality Malui sticker as a little extra to personalise your tool.

39,90 €
10

MALUI

Parkside Performance 20V 4Ah Smart Battery PAPS 204 - Malui Bundle

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8.0

Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

Show more
Main highlights

Smart Battery with Bluetooth - Connect via app for intelligent battery monitoring and convenient status query.
Practical LED charge indicator - Coloured display for residual capacity at the touch of a button, so you always have full control when working.
Powerful replacement battery - Original Parkside Performance 20V battery with 4Ah capacity, ideal for long-lasting power with all X20V team devices.
Compatible with all X20V Team Series devices - Universal use for cordless drills, saws, grinders and more.
Bundle with Malui sticker - Includes high-quality Malui sticker as a little extra to personalise your tool.

39,95 €