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Power Supply – Power for Your Projects

Ensure your projects are always powered up! Discover batteries, rechargeable batteries, power supplies, and electrical materials. Everything you need to bring your ideas to life!
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Batteries & Accumulators
Batteries & Accumulators
Power Supplies
Power Supplies
Electrical Materials
Electrical Materials
E-Mobility
E-Mobility

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612 Products
Euro mains cable with switch Euro plug Stripped cable ends with wire end ferrules 1.50m

Average rating of 5 out of 5 stars

goobay
EuroNKSW
Euro mains cable with switch Euro plug Stripped cable ends with wire end ferrules 1.50m

From €2.30

Available · 100+ piece · 1-3 days

Micro USB mains adapter / charging adapter, 5V / 1A, flat design, black Micro USB mains adapter / charging adapter, 5V / 1A, flat design, black

Average rating of 4.8 out of 5 stars

OTB
8013928
Micro USB mains adapter / charging adapter, 5V / 1A, flat design, black

€4.20

Available · 41 piece · 1-3 days

Battery holder for 2x Mono D with push-button connection Battery holder for 2x Mono D with push-button connection
goobay
11452
Battery holder for 2x Mono D with push-button connection

€0.80

Available · 32 piece · 1-3 days

NiMH battery pack with solder tag, 3x AAA / Micro, 3.6V, 800mAh NiMH battery pack with solder tag, 3x AAA / Micro, 3.6V, 800mAh
goobay
55581
NiMH battery pack with solder tag, 3x AAA / Micro, 3.6V, 800mAh

€6.20

Available · 4 piece · 1-3 days

Lamp holder, GU10, max. 250V / 100W, 11cm cable Lamp holder, GU10, max. 250V / 100W, 11cm cable
Frei
T1538023
Lamp holder, GU10, max. 250V / 100W, 11cm cable

€0.35

Available · 41 piece · 1-3 days

Euro mains cable Euro plug IEC60320-C7 double socket black

Average rating of 5 out of 5 stars

goobay
EuroNKblk
Euro mains cable Euro plug IEC60320-C7 double socket black

From €1.60

Available · 50 piece · 1-3 days

Plug-in power supply, 5V DC, 2.4A, 12W, hollow plug 5.5x2.1mm Plug-in power supply, 5V DC, 2.4A, 12W, hollow plug 5.5x2.1mm
PCEnergy
PCE12-5-24-WM
Plug-in power supply, 5V DC, 2.4A, 12W, hollow plug 5.5x2.1mm

€4.95

Available · 27 piece · 1-3 days

Battery holder for 3x Mignon AA with cover and switch, JST connector Battery holder for 3x Mignon AA with cover and switch, JST connector
SparkFun
PRT-18769
Battery holder for 3x Mignon AA with cover and switch, JST connector

€2.50

Available · 15 piece · 1-3 days

Euro multiple adapter 1x earthing contact plug (type F, CEE 7/4) 2x Euro socket (type C, CEE 7/16)

Average rating of 5 out of 5 stars

goobay
NK002
Euro multiple adapter 1x earthing contact plug (type F, CEE 7/4) 2x Euro socket (type C, CEE 7/16)

From €1.30

Available · 9 piece · 1-3 days

Euro mains cable Euro plug stripped cable ends with wire end ferrules 1.50m
goobay
EuroNKAE
Euro mains cable Euro plug stripped cable ends with wire end ferrules 1.50m

From €1.93

Available · 29 piece · 1-3 days

Battery holder for 1x mono D with solder connection Battery holder for 1x mono D with solder connection
goobay
11451
Battery holder for 1x mono D with solder connection

€0.50

Available from the manufacturer · 100+ piece · 5-10 Tage

DC adapter cable hollow plug socket 5.5x2.1mm - 2x crocodile clip 25cm
BerryBase
DCAK5521-BKK
DC adapter cable hollow plug socket 5.5x2.1mm - 2x crocodile clip 25cm

€1.90

Available · 21 piece · 1-3 days

VARTA button cell alkaline LR54 / V10GA VARTA button cell alkaline LR54 / V10GA
VARTA
4008496297634
VARTA button cell alkaline LR54 / V10GA

€0.60

Available · 31 piece · 1-3 days

Panasonic eneloop rechargeable battery Micro AAA NiMH 800mAh, blister pack of 4 Panasonic eneloop rechargeable battery Micro AAA NiMH 800mAh, blister pack of 4
Panasonic
5410853064305
Panasonic eneloop rechargeable battery Micro AAA NiMH 800mAh, blister pack of 4

Content: 4 Stück (€2.88 / 1 Stück)

€11.50

Available · 2 piece · 1-3 days

Panasonic photo battery Lithium 3V CR2, blister pack of 1 Panasonic photo battery Lithium 3V CR2, blister pack of 1
Panasonic
5025232016082
Panasonic photo battery Lithium 3V CR2, blister pack of 1

€2.50

Available · 11 piece · 1-3 days

IEC320-C13 angled safety plug socket blue

Average rating of 5 out of 5 stars

S-Conn
KGNK-BU
IEC320-C13 angled safety plug socket blue

From €3.90

Available · 11 piece · 1-3 days

Euro mains cable Euro plug stripped cable ends with wire end ferrules & strain relief, 1.50m
goobay
EuroNKZE
Euro mains cable Euro plug stripped cable ends with wire end ferrules & strain relief, 1.50m

From €2.20

Available from the manufacturer · 100+ piece · 5-10 Tage

DC cable with hollow plug 3.5x1.35mm and open cable end 1.0m
McPower
T1451368
DC cable with hollow plug 3.5x1.35mm and open cable end 1.0m

€1.20

Available · 16 piece · 1-3 days

Duracell Procell alkaline battery Mono D LR20, single
Duracell
DPC-MONO
Duracell Procell alkaline battery Mono D LR20, single

€1.70

Available · 1 piece · 1-3 days

Panasonic NCR18650GA lithium-ion battery, 3450mAh, flat-top

Average rating of 4.6 out of 5 stars

Panasonic
NCR18650GA
Panasonic NCR18650GA lithium-ion battery, 3450mAh, flat-top

€5.90

Available · 100+ piece · 1-3 days

Battery holder for 2x Mignon AA 1/1 with push-button connection Battery holder for 2x Mignon AA 1/1 with push-button connection

Average rating of 5 out of 5 stars

goobay
11461
Battery holder for 2x Mignon AA 1/1 with push-button connection

€0.40

Currently not available

WAGO 2273-0203 COMPACT junction box terminal block, 3-gang, orange

Average rating of 5 out of 5 stars

WAGO
2273-0203
WAGO 2273-0203 COMPACT junction box terminal block, 3-gang, orange

From €0.19

Available · 100+ piece · 1-3 days

Battery holder for 2x Mignon AA 1+1 with 150mm connection cable Battery holder for 2x Mignon AA 1+1 with 150mm connection cable

Average rating of 5 out of 5 stars

goobay
11983
Battery holder for 2x Mignon AA 1+1 with 150mm connection cable

€0.27

Available · 64 piece · 1-3 days

IEC320-C13 socket angled safety plug red

Average rating of 5 out of 5 stars

S-Conn
KGNK-RE
IEC320-C13 socket angled safety plug red

From €3.90

Available from the manufacturer · 100+ piece · 5-10 Tage

Mini step-down converter adjustable 4.75-23V -> 1-17V / 3A Mini step-down converter adjustable 4.75-23V -> 1-17V / 3A

Average rating of 5 out of 5 stars

BerryBase
REGA3A
Mini step-down converter adjustable 4.75-23V -> 1-17V / 3A

€1.20

Available · 100+ piece · 1-3 days

Mains and surge protection for sockets

Average rating of 5 out of 5 stars

goobay
51270
Mains and surge protection for sockets

€3.40

Available · 44 piece · 1-3 days

Sony US18650VTC6 Lithium-ion battery, 3000mAh, flat-top

Average rating of 4.9 out of 5 stars

Sony
US18650VTC6
Sony US18650VTC6 Lithium-ion battery, 3000mAh, flat-top

€6.50

Available · 100+ piece · 1-3 days

LP-552035 Lithium-Polymer / LiPo battery, 3.7V, 350mAh with 2 pin JST connector LP-552035 Lithium-Polymer / LiPo battery, 3.7V, 350mAh with 2 pin JST connector

Average rating of 5 out of 5 stars

PKCell
LP-552035-J
LP-552035 Lithium-Polymer / LiPo battery, 3.7V, 350mAh with 2 pin JST connector

€3.90

Available · 55 piece · 1-3 days

1.80m car cigarette lighter cable - DC plug / hollow plug 5.5 x 2.1mm

Average rating of 5 out of 5 stars

goobay
12019
1.80m car cigarette lighter cable - DC plug / hollow plug 5.5 x 2.1mm

€3.95

Available · 12 piece · 1-3 days

Lamp holder, G9, round, for high-voltage lamps, max. 230V/75W, 11cm cable Lamp holder, G9, round, for high-voltage lamps, max. 230V/75W, 11cm cable
Frei
T1532002
Lamp holder, G9, round, for high-voltage lamps, max. 230V/75W, 11cm cable

€0.50

Available from the manufacturer · 100+ piece · 5-10 Tage

LP-401230, Lithium-Polymer / LiPo battery, 3.7V, 100mAh with 2 pin JST connector LP-401230, Lithium-Polymer / LiPo battery, 3.7V, 100mAh with 2 pin JST connector

Average rating of 5 out of 5 stars

PKCell
LP-401230-J
LP-401230, Lithium-Polymer / LiPo battery, 3.7V, 100mAh with 2 pin JST connector

€3.40

Available · 72 piece · 1-3 days

Premium battery compatible with Sony NP-F960, F970, Li-Ion, 6600mAh Premium battery compatible with Sony NP-F960, F970, Li-Ion, 6600mAh
OTB
2121055
Premium battery compatible with Sony NP-F960, F970, Li-Ion, 6600mAh

€31.40

Available from the manufacturer · 100+ piece · 5-10 Tage

IEC320-C13 socket angled earthing contact plug black

Average rating of 5 out of 5 stars

goobay
NK101
IEC320-C13 socket angled earthing contact plug black

From €3.81

Available · 14 piece · 1-3 days

Damp-proof junction box, 75x75x40mm, IP54 Damp-proof junction box, 75x75x40mm, IP54
Frei
T1534477
Damp-proof junction box, 75x75x40mm, IP54

€0.90

Available · 12 piece · 1-3 days

Battery holder for 10x Mignon AA with push-button connection Battery holder for 10x Mignon AA with push-button connection
goobay
11469
Battery holder for 10x Mignon AA with push-button connection

€1.50

Available from the manufacturer · 100+ piece · 5-10 Tage

Top Brands

Power Supply for Microcontrollers and Electronics Projects

A reliable power supply is the foundation of every electronic circuit. Whether microcontrollers, single-board computers, sensor technology, or industrial electronics: without suitable batteries, rechargeable batteries, or power supplies, systems will not operate reliably or may fail under load.

Depending on the application, different energy sources are used. Batteries and rechargeable batteries are ideal for mobile projects, while stationary applications are typically powered by power supplies or integrated power supply modules. In addition, high-quality electrical installation materials ensure safe distribution of mains voltage.

In this category, you will find solutions for DIY projects, IoT applications, industrial electronics, as well as components for e-mobility such as wallboxes, EV charging cables, and mobile charging stations.

Batteries & Rechargeable Batteries for Mobile Power Supply

Batteries and rechargeable batteries are ideal for portable devices, sensor stations, or battery-powered microcontroller projects. Common variants include lithium batteries, button cells, AA and AAA cells, as well as rechargeable standard batteries.

For higher energy density and repeated charging cycles, lithium-ion batteries or industrial batteries are used. Power banks provide flexible USB power supply for development boards such as Raspberry Pi or ESP32.

Suitable chargers are essential and must be matched to the battery chemistry and capacity. Capacity is specified in mAh and determines how long a device can operate. For long-lasting systems, a combination of high-quality rechargeable batteries and appropriate charging electronics is recommended.

Power Supplies for Stable Voltage Supply

Stationary applications are usually powered by power supplies. These include plug-in power supplies, desktop power supplies with barrel connectors, USB power supplies, or special power supplies with adjustable output voltage.

Power supply modules are suitable for installation inside devices, while car power supplies and DC adapter cables offer flexible solutions for mobile or vehicle-based applications. Inductive chargers also enable wireless charging of compatible devices.

Correct output voltage in volts, sufficient current in amperes, and the appropriate connector type are crucial. A stable voltage supply protects sensitive electronics from malfunctions.

Electrical Installation Materials for Safe Installation

High-quality components from the field of electrical installation materials are required for proper installation. These include sockets, power cables, cable reels, installation materials, and lamp holders.

Connection terminals ensure secure electrical contacts, while grounding-type sockets guarantee compliant power distribution. In the field of e-mobility, wallboxes, EV charging cables, and mobile charging stations are part of modern energy infrastructure.

Proper selection and installation significantly contribute to the operational safety and longevity of electrical systems.

FAQ – Power Supply

How do I know which power supply I need?
Pay attention to the required output voltage in volts, the necessary current in amperes, and the appropriate connector type. You can find the technical specifications in your device’s datasheet.
What does mAh mean for rechargeable batteries?
mAh stands for milliampere-hours and describes the capacity of a rechargeable battery. The higher the value, the longer a device can operate with the same current consumption.
What are connection terminals?
Connection terminals are electrical components used for the secure and detachable connection of conductors. They are frequently used in junction boxes or distribution boards.
What is a relay for sockets and what is it used for?
A relay for sockets is an electrically controlled switch. It enables the automatic switching on and off of connected loads, for example in smart home or automation projects.