Best Online Speicher 2026

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Last Updated - 22.07.2026

Best Choice

01

Solakon

Solakon 900 W Balcony Power Station with Memory, Balcony Power Station 800 W Complete Socket, 2 kWh Solakon One Storage with 800 Watt Integrated Hybrid Inverter - 450 W Bifacial Solar Modules

17% Off Limited Time Deal

17% Off

Limited Time Deal

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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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Transparency and control thanks to the Solakon app: With the Solakon app, you can monitor inverters and memory data via Wifi function in real time. You are directly informed about daily and annual solar yields and CO₂ savings Thanks to simple setup and intuitive operation, you are ready to go. Highest server standards thanks to German in-house development.
Premium components: the 900 W balcony power station consists only of high-quality components. 2 x bifacial 450 W TWMNH-48HD solar modules, 4 x 3.0 m DC extension cable, 1 x 10 m cable for socket, 1 x Solakon One balcony power station memory with 2.11 kWh and 800 W integrated hybrid inverter.
More electricity thanks to N type*4 and bifacial module*2: Our premium modules reliably deliver energy even in diffused light and ensure you higher savings in the long term.
Including 2.11 kWh memory: The balcony power plant with memory makes energy generation even more effective. Store the generated electricity in the Solakon ONE solar bank and use it at a later time.
Easy to install: the balcony power plant can be installed in approx. 1-2 hours. Benefit from 8,000 charging cycles and a high efficiency of 70%.

874,99 € 1.059,99 €(17% Off off)
Value for Money

02

Solakon

Solakon 900 W Balcony Power Station with Memory, Balcony Power Station 800 W Complete Socket, 800 W Integrated Hybrid Inverter, Solakon ONE with 2.11 kWh, 2 x 450 W Bifacial Solar Modules

22% Off Limited Time Deal

22% Off

Limited Time Deal

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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

Transparency and control thanks to the Solakon app: With the Solakon app, you can monitor inverters and memory data via Wifi function in real time. You are directly informed about daily and annual solar yields and CO₂ savings Thanks to simple setup and intuitive operation, you are ready to go. Highest server standards thanks to German in-house development.
Premium components: the 900 W balcony power station consists only of high-quality components. 2 x bifacial 450 W TWMNH-48HD solar modules, 4 x 3.0 m DC extension cable, 1 x 3 m cable for socket, 1 x Solakon One balcony power station memory with 2.11 kWh and 800 W integrated hybrid inverter.
More electricity thanks to N type*4 and bifacial module*2: Our premium modules reliably deliver energy even in diffused light and ensure you higher savings in the long term.
Including 2.11 kWh memory: The balcony power plant with memory makes energy generation even more effective. Store the generated electricity in the Solakon ONE solar bank and use it at a later time.
Easy to install: the balcony power plant can be installed in approx. 1-2 hours. Benefit from 8,000 charging cycles and a high efficiency of 70%.

812,22 € 1.039,99 €(22% Off off)
03

Seagate

Seagate Portable 4TB External Hard Drive USB 3.0 (STGX4000400)

14% Off

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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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Instant plug and play PC compatibility; easy drag and drop functionality
Fast transfer of files with USB 3.0 (backward compatible with USB 2.0)
Expand the capacity of your computer with a lightweight, compact solution. Compatible with PC, notebook, Xbox and PS4 consoles
Buy this product exclusively on Amazon
Amazon Exclusive

144,99 € 168,99 €(14% Off off)
04

WD

Western Digital 4TB Elements Desktop USB3.0 External Hard Drive -WDBWLG0040HBK-EESN

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9.3

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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WD Elements desktop memory boosts the performance of your PC. Transfer your data from the internal hard drive to the external hard drive and free up space for more performance.
The WD Elements 4 TB external hard drive gives you plenty of storage space for all your pictures, videos, music files and documents, so you never have to delete anything again.
Supports the latest USB 3.0 devices, but older USB 2.0 devices are also supported. The WD external hard drive is also shockproof, ensuring the security of your data.
Easily add the WD Elements HDD to your computer and never worry about running out of storage or data security again.
Contents: WD Elements desktop storage 4 TB (desktop storage, USB 3.0 compatible, additional storage for photos, music, videos and all other files, shockproof), black.

295,00 €
05

TERRAMASTER

TERRAMASTER F4-425 Plus 4 Bay NAS Memory, Intel N150 Quad-Core, 16GB DDR5 RAM, 2X 5GbE LAN, 3X M.2, Network Storage for Teamwork & Multimedia Server (No Hard Drive)

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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

Two 5GbE LAN ports at up to 1020MB/s: With two 5GbE network interfaces, the network storage supports F4-425 Plus link aggregation and SMB multichannel, achieving sequential read/write speeds of up to 1020MB/s. Ideal for video editors, creative teams and small offices that require fast and reliable data access.
Powerful 4-bay NAS with triple M.2 expansion: Powered by the Intel N150 quad-core CPU (up to 3.6GHz) and 16GB DDR5 (non-ECC SODIMM) memory, the F4-425 Plus NAS memory delivers high efficiency for demanding users. Its innovative triple M.2 SSD design supports SSD cache or independent storage pools, providing outstanding flexibility and acceleration for data-intensive tasks.
Enormous storage capacity of 144TB with flexible TRAID protection: The F4-425 Plus 4-bay NAS supports a total capacity of up to 144TB (4×HDD + 3×M.2 SSD). TerraMaster's exclusive TRAID technology automatically optimizes capacity while providing strong data protection with advanced features such as TFSS snapshots and HyperLock WORM for enhanced data security.
Data drive mounting and reliable aluminum design: Easily integrate your existing storage by installing TOS 6 on a new drive. Unlike other NAS systems that require hard drive formatting, TerraMaster's Direct Data Drive Mounting technology lets you connect and access the existing data drive on the fly so that all your files remain safe and unchanged. This NAS enclosure with a robust aluminum alloy chassis and push-lock HDD bays combines convenience, security and reliability for long-term use.
All-in-one hub for professionals, businesses and home users: From geeks using dockers, virtual machines and portainers, to small businesses using TerraMaster BBS (Business Backup Suite), to families who enjoy Plex/Emby/Jellyfin with 4K/8K transcoding, the F4-425 Plus NAS server meets a variety of needs. Built-in apps such as QB/Torrent/Transmission simplify downloads, while TNAS Mobile allows full remote control.

689,99 €
06

WD

WD My Passport SSD 1TB Mobile SSD Storage (NVMe Technology, USB-C and USB 3.2 Gen-2 Compatible, Read 1050MB/s, Write 1000MB/s) Midnight Blue

33% Off

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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

The mobile SSD-storage impresses with an elegant metal housing that is robust enough for all eventualities. Shockproof and vibration-proof. Withstands drops from up to 2 meters high.
The WD My Passport SSD 1TB mobile hard drive offers read and write speeds of up to 1,050 MB/s and 1,000 MB/s. Get access to your digital universe anytime and from anywhere.
Take the vibration and shock resistant 1TB external hard drive with you wherever you go. The WD My Passport SSD's metal enclosure is robust enough and ready for all eventualities.
Contents: WD My Passport SSD 1TB Mobile Hard Drive (NVMe Technology, USB-C and USB 3.2 Gen-2 Compatible, Read 1050 MB/s, Write 1000 MB/s) Dark Blue.
Backup software built into the external hard drive makes it easy to back up large files. Simply set up once on the SSD and your data will be backed up automatically.

175,05 € 262,99 €(33% Off off)
07

Cyberpower

CyberPower OLS1500EA-DE 1500VA/1350W Online UPS Double Conversion Tower Black, Eco Mode for High Efficiency Over 95%, Colour LCD for Monitoring, HID USB, Relay Dry Contact, EBM Expansion Connection

12% Off

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9.0

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

Online double-conversion for critical consumers: The OLS1500EA-DE provides sensitive technology with continuous voltage preparation and 0ms switching time to ensure that NAS, server, DVR and surveillance systems continue to run stable even in the event of interference. The single-phase topology provides a clean output supply for linear and non-linear loads with low distortion and ensures that 1500VA can be used as 1350W, ideal for mission-critical installations in the server room and industrial IoT environments thanks to the power factor 0.9
Monitoring, communication and quieter operation in everyday life: The colour LCD shows operating mode, power, battery and load status as well as errors, warnings, events and logs, and allows direct settings for mode, alarm, input and output as well as battery parameters. For system connectivity, 1 HID-compatible USB port including USB cable is provided, plus a relay dry contact interface and an EPO port for emergency shutdown. Optional SNMP and HTTP remote monitoring via RMCARD205 is possible. The variable speed fan control automatically regulates load and temperature in 20 levels.
Large input margin and ECO operation: The input voltage range from 160 to 300 Vac at 0 to 100% load intercepts fluctuating networks and reduces unnecessary battery recharging. For partial load scenarios, the adjustable voltage range up to 110 to 300 Vac can be used, graduated by load level, which is especially helpful in buildings with long lines or fluctuating supply. The online ECO mode achieves an efficiency of over 95% and thus reduces power dissipation and heat during operation without neglecting monitoring
Intelligent battery concept with expansion option: the maintenance-free lead gel battery supports battery start and intelligent battery management to control the charge status. At half load, the UPS reaches 15.3 minutes runtime, 5.3 minutes at full load, and is typically recharged in 4 hours, at a maximum of 1.5 A charging current. A connection for optional external battery modules allows capacity expansion, while the UPS automatically detects connected modules and displays the runtime correctly without manual recalculation
CONFIGURABLE OUTPUT & COMPREHENSIVE PROTECTION The output voltage is configurable to 208, 220, 230 or 240 Vac, the output frequency in battery operation works with high accuracy. Internal bypass is available automatically and manually so connected systems can continue to be supplied in the event of maintenance or malfunctions. The overload protection combines internal current limitation, circuit breaker and fuse, with clear limits for mains, battery and bypass operation. In addition, EMI and RFI filters are integrated as well as a surge protection with 345 joules for more operational safety

461,79 € 523,56 €(12% Off off)
08

Powerness

Growatt NOAH 2000 Balcony Power Station with 1800 W PV Input Power IP66 for Balcony Power Plant (NOAH 2000 x 1 + NEO800W + 880 W)

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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

Why choose Powerness: Powerness specialises in the expansion of renewable energies. - - -
Superior water protection IP66: The NOAH 2000 has IP66 certification for superior water protection and is therefore perfect for outdoor use. This high degree of water resistance ensures reliable performance and durability, even in extreme weather conditions.
Expandable capacity thanks to easy stacking: The NOAH 2000 offers expandable capacity by simply stacking without the need for complex connections and installations. You can stack up to four units for a maximum capacity of 8192 Wh. This user-friendly design allows you to effortlessly customise your energy storage to meet growing demands.
2048 Wh balcony power station memory: With an impressive capacity of 2048 Wh, the NOAH 2000 offers exceptional energy storage at excellent value for money. This high capacity ensures that you have enough energy available to meet your needs and makes it a wise investment for your energy systems.
1800 W PV input power: AH 2000 provides scalable solar energy input power, so you can easily stack the capacity. Each NOAH unit has two MPPT inputs and supports 1800 W solar energy input. By stacking up to four units, you can achieve a total of eight MPPT inputs and 7200 W solar energy input. This flexibility allows you to install the number of solar panels based on your needs and available space, ensuring optimal use of solar energy.
0% VAT for private customers with a delivery address in Germany: The price includes 0% VAT (no VAT). Individuals from Germany receive tax relief when buying balcony power plants and photovoltaic systems as of 1 January 2023. The price only applies to private customers who meet the requirements for VAT-free delivery as per § 12 para. 3 UstG. For business customers, an additional 19% VAT will be added to the purchase price.

659,99 €
09

Springer

Elektrochemische Speicher: Superkondensatoren – Batterien – Elektrolyse-Wasserstoff – Rechtliche Rahmenbedingungen
8.8

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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39,99 €
10

Motorbuch Verlag

Nur über meine Speiche - Der kleine Radgeber für zwischendurch: humorvolle Fahrrad-Tipps, Geschichten und Alltagsabenteuer rund ums Radfahren: Kuriose Kurzgeschichten aus der Radwelt
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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18,95 €