Power Supplies

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  • 2 x AA Battery Holder with Switch and 2-Pin JST for MicroBit (BBOXMBIT)
    Battery Holder for Use with BBC Micro:Bit

    This enclosed holder for 2 x AA batteries comes with an on/off switch and 2-pin JST connector for plugging directly into the Micro:Bit. Ideal for simple use of Micro:Bit on the move
    Add to Cart
    £1.25
  • 2 x AA Battery Holder with 2-Pin JST for MicroBit (BBOXMBITA)
    Open Battery Holder for Use with BBC Micro:Bit

    This open holder for 2 x AA batteries comes with a 2-pin JST connector for plugging directly into the Micro:Bit. Ideal for simple use of Micro:Bit on the move.
    We also have a battery holder with on/off switch
    Add to Cart
    £1.00
  • 9V DC Power Supply PSU for Arduino, TFT Displays, Etc (ARD-PSU)
    9V DC Power Supply with 2.1mm DC Jack

    This UK power supply is fully RoHS and CE compliant and has a 2.1mm DC Jack for plugging directly into the Arduino or the TFT screens
    • Output: 9V DC
    • Input: 230-254V AC (50-60Hz)
    • Output current: 550mA
    • Lead length: 1.5m
    • Polarity: Centre positive
    • Jack size: 2.1mm pin, 5.5mm barrel
    • Weight: 120g
    • Approvals: CE, CEC Level 5, GS, RoHS, UL/cUL
    • Plug style: UK (a 2-pin Euro converter will be included free of charge for countries that require it)
    • Supports: Arduino Uno, Leonardo, Mega2560, etc.
    Add to Cart
    £7.95
  • Energizer AA 2300 mAh NiMH Extreme Rechargeable Battery, Pre Charged (BATAA23)

    These are ready to use when you receive them and are our recommended battery for robotics products.

    Shipped loose - but purchase a multiple of 4 and they will be in a sealed pack of 4.

    Energizer’s range now includes EXTREME pre-charged, ready to use rechargeable batteries. Extreme is the reusable, high performance solution for all occasions and power-demanding devices, which means you save money and reduce waste by replacing less batteries.

    Pre-charged batteries can be used straight from the pack and can hold charge up to a year when not in use, thus providing the convenience of alkaline batteries with the economic and environmental benefits of rechargeable batteries.

    Lasting up to 6 x longer than alkaline batteries (e.g Energizer Ultra), with hundreds of recharge cycles giving a massive cost saving over standard batteries. 95% Recycled Packaging. These high powered 2300 mAh batteries are perfect for high drain digital applications and can be used anywhere standard AA batteries are used.

    Add to Cart
    £1.95
  • 3 x AA Battery Crumb for Crumble (CRBAT)
    Battery Holder Crumb


    This Crumb provides a switched power supply with indicator light and fuse. I has two sets of Crumble compatible output connectors. Ideal for powering your Crumble project.

    Batteries, Croc clips and Crumble NOT included.
    Add to Cart
    £3.50
  • Micro-USB Cable (1m) : Micro:Bit, Crumble, Raspberry Pi, etc. (USBMICRO)
    Quality 1m Micro-USB Cable

    Ideal for use with many micro-processors we stock, including
    • Crumble
    • Raspberry Pi
    • Arduino Yun
    Add to Cart
    £1.50
  • Raspberry Pi Power Supply PSU 1A 5V (RPI-PWR)
    Micro USB Power Supply for Raspberry Pi
    • Single 5V, 1000mA output
    • Micro-USB connector
    • 1.8m lead
    • Input 100-240V ac
    • Output: 5V DC
    • Approved for use on Raspberry Pi
    • Available in UK (3-pin) and Euro (2-pin) styles
    Add to Cart
    £3.95
  • High Power Raspberry Pi 3 Power Supply PSU 2.5A UK and Euro (RPI-PS2)
    Micro USB Power Supply for Raspberry Pi

    Official Raspberry Pi Power supply for use with any Raspberry Pi board. Supplied with 1.5m Micro USB Lead and changeable heads for use in UK and Europe
    • Single 5V, 2500mA output
    • Micro-USB connector
    • 1.5m lead
    • Input 100-240V ac
    • Output: 5V DC
    • Approved for use on Raspberry Pi (all models especially RPi 3B)
    • Supports both UK and Euro plugs
    Add to Cart
    £5.95
  • 12V DC Trickle Charger for Initio Robot (ADAP-12VUK)
    12V DC power supply with correct connector for the Initio charging socket

    This is a trickle charge unit that can safely be left connected overnight,

    It will take around 10 hours to charge a set of 2000mAH cells and then will keep them topped up
    Add to Cart
    £4.95
  • 3 x AAA Battery Holder with On/Off Switch and 2-Pin JST (BBOX3)
    This battery holder connects 3 AAA batteries together in series for powering all kinds of projects. We spec'd these out because the box is slim, and 3 AAA's add up to about 3.3-4.5V, a very similar range to Lithium Ion/polymer (Li-Ion) batteries and have an on-off switch. That makes them ideal for use with 3.3V projects that have a 2-pin JST connector such as Flora

    Fits any standard AAA battery. When using rechargeable NiMH the output voltage will range from about 3.7V with charged batteries to 2.7V at the end of life with a nominal voltage of 3.6V. When using alkalines, the output will range from 4.6V with new batteries to 3.3V at the end of life with a nominal voltage of about 4.5V
    Add to Cart
    £1.95
  • High Power Raspberry Pi Power Supply PSU 2A 5V (RPI-PWR2)
    Micro USB Power Supply for Raspberry Pi
    • Single 5V, 2000mA output
    • Micro-USB connector
    • 1.8m lead
    • Input 100-240V ac
    • Output: 5V DC
    • Approved for use on Raspberry Pi
    • Available in UK (3-pin) and Euro (2-pin) styles
    • NB. Euro unit is 1.8A not 2A
    Add to Cart
    £5.95
  • Micro-USB Cable (10cm) (USB10)
    10cm Micro-USB Cable

    Ideal for use with many micro-processors we stock, including both power and data connections
    • Crumble
    • Raspberry Pi
    • Arduino Yun
    Add to Cart
    £1.00
  • Adafruit LiPo PowerBoost 500 & Charger - 500mA at 5V from 1.8 to 5V (PBST500C)
    Adafruit PowerBoost Charger - Provides 500mA at 5.2V from 1.8V to 5V

    PowerBoost 500 with charger is the perfect power supply for your portable project! With a built-in battery charger circuit, you'll be able to keep your project running even while recharging the battery! This little DC/DC boost converter module can be powered by any 3.7V LiIon/LiPoly battery, and convert the battery output to 5.2V DC for running your 5V projects.

    Adafruit tweaked the output to be 5.2V instead of a straight-up 5.0V so that there's a little bit of 'headroom' for long cables, high draw, the addition of a diode on the output if you wish, etc. The 5.2V is safe for all 5V-powered electronics like Arduino, Raspberry Pi, or Beagle Bone while preventing icky brown-outs during high current draw because of USB cable resistance.

    The PowerBoost 500C has at the heart a TPS61090 boost converter from TI. This boost converter chip has some really nice extras such as low battery detection, 2A internal switch, synchronous conversion, excellent efficiency, and 700KHz high-frequency operation. Check out these specs!

    • Synchronous operation means you can disconnect the output completely by connecting the ENable pin to ground. This will completely turn off the output
    • 2A internal switch (~2.5A peak limiting) means you can get 500mA+ from a 3.7V LiPoly/LiIon battery. We had no problem drawing 1000mA, just make sure your battery can handle it!
    • Low battery indicator LED lights up red when the voltage dips below 3.2V, optimized for LiPo/LiIon battery usage
    • Onboard 500mA charge-rate 'iOS' data resistors. Solder in the USB connector and you can plug in any iPhone or iPod for 500mA charge rate. Not suggested for large iPads.
    • Full breakout for battery in, control pins and power out
    • 90%+ operating efficiency in most cases (see datasheet for efficiency graphs), and low quiescent current: 5mA when enabled and power LED is on, 20uA when disabled (power and low batt LED are off)
    To make this even more useful, we stuck a MicroLipo charger on the other side. The charger circuitry is powered from a microUSB jack, and will recharge any 3.7V/4.2V LiIon or LiPoly battery at 500mA max rate. There's two LEDs for monitoring the charge rate, a yellow one tells you its working, a green one lights up when its done. You can charge and boost at the same time no problem, without any interruption on the output so its fine for use as a "UPS" (un-interruptable power supply) for a low-current draw device. Just be aware that the charge rate is 500mA max, so if you're drawing more than ~300mA continuously from the 5V output side, the battery will slowly drain since the charge rate is less than the dis-charge rate. For example, a Pi works fine but a BBB uses too much current for it to act like a UPS.

    Great for powering your robot, Arduino project, single-board-computer such as Raspberry Pi or BeagleBone! Each order comes with one fully assembled and tested PCB and a loose USB A jack. If you are powering your project from USB, solder the USB A jack in (a 3-minute soldering task). If you would like to use a terminal block, pick up a 3.5mm 2pin block and solder to the output spot where the USB jack would go. Or don't solder anything in for a more compact power pack.

    Each order comes with a fully assembled and tested PowerBoost 500C + USB jack. Does not come with a Lipoly or LiIon battery, but we have tons in the shop, just pick one with more than 500mAh of capacity. Also doesn't come with the nice iPhone or charger cable.  Be sure to read Adafruit's lovely tutorial for details, schematics, and more!
    Add to Cart
    £10.45
  • Adafruit USB LiPo Charger (ADA-CHGLIPO)
    Adafruit Micro LiPo - USB LiIon/LiPoly Charger

    Oh so adorable, this is the tiniest little lipo charger, so handy you can keep it any project box! Its also easy to use. Simply plug in the gold plated contacts into any USB port and a 3.7V/4.2V lithium polymer or lithium ion rechargeable battery into the JST plug on the other end. There are two LEDs - one red and one green. While charging, the red LED is lit. When the battery is fully charged and ready for use, the green LED turns on. Seriously, it could not get more easy.

    Charging is performed in three stages: first a preconditioning charge, then a constant-current fast charge and finally a constant-voltage trickle charge to keep the battery topped-up. The charge current is 100mA by default, so it will work with any size battery and USB port. If you want you can easily change it over to 500mA mode by soldering closed the jumper on the back, for when you'll only be charging batteries with 500mAh size or larger.

    For use with Adafruit LiPoly/LiIon batteries only! Other batteries may have different voltage, chemistry, polarity or pinout.
    • Comes assembled and tested with a free bonus JST cable!
    • 5V input via PCB-style USB connector
    • For charging single Lithium Ion/Lithium Polymer 3.7/4.2v batteries (not for older 3.6/4.1v cells)
    • 100mA charge current, adjustable to 500mA by soldering a jumper closed
    • Free 2-pin JST cable included!
    Batteries not included.
    Add to Cart
    £5.75
  • Lipo Charger - Switchable Charge Rate (UNICHG)
    USB LiIon/LiPoly Charger - Selectable Charge Rate

    A brilliant little charger for Lipo (Lithium Polymer) or Lion (Lithium Ion) batteries used for many mobile and wearable projects.

    This unit features the MCP73831 charge controller IC which will pre-condition your battery, charge it up and terminate when complete, then keep the battery topped up gently if it drops below the threshold.

    We've added a single charge LED which is on during the charge cycle and off when completed.

    What makes this charger unique is the switch to select either 100mA* or 500mA* charge rate. Unless your battery specifies otherwise, keep the charge rate below the capacity in mAh. (so for a 150mAh battery, select the 100mA charge rate)

    Plug in a micro-USB cable from your laptop, PC or a phone charger and away you go.

    Dimensions: 29 x 12mm

    * Nominal charge current. Depends on battery voltage, amongst other things. This is the maximum charge current you would see

    **Batteries not included. USB cable optional
    Add to Cart
    £4.50
  • Multiple Lipo Charger - Switchable Charge Rate (MULTICHG)
    Charge 4 different Batteries at the Same time
    USB LiIon/LiPoly Charger - Selectable Charge Rate


    This charger allows you to charge 4 different batteries at the same time. It comprises 4 completely independent charge circuits, each of which has a separately switchable charge rate selection.

    This unit features 4 of the MCP73831 charge controller ICs which will pre-condition your batteries, charge them up and terminate when complete, then keep the battery topped up gently if it drops below the threshold.

    These chargers have 2 LEDs for each channel. Red for charging, Green for complete. Both LEDs will be on if no battery is connected.

    What makes this charger unique is the switch to select either 100mA* or 500mA* charge rate. Unless your battery specifies otherwise, keep the charge rate below the capacity in mAh. (so for a 150mAh battery, select the 100mA charge rate)

    Plug in a micro-USB cable from your laptop, PC or a phone charger and away you go. Note that if using the high charge rate on all 4 channels, you will exceed the USB 2.0 current specification, so it would be better to use a phone charger style USB power unit.

    Dimensions: 29 x 12mm

    * Nominal charge current. Depends on battery voltage, amongst other things. This is the maximum charge current you would see

    **Batteries not included. USB cable optional
    Add to Cart
    £9.95
  • 3 x AA Battery Holder with Micro-USB Connector (BBOX3AAU)
    This neat little unit enables you to use 3 AA alkaline batteries to power a 5V system such as an Arduino or Raspberry Pi. Although the nominal voltage of 3 x AA is 4.8V, this is sufficient for most systems to operate.
    Add to Cart
    £1.95
  • 5V Switching Power Supply PSU 5.5A (PSS5A5V)
    Open Frame Power Supply
    Ideal for use with our 5V LED strings
    • 5V nominal DC output
    • 230-250V AC input
    • Output adjustable +/- 1V
    • 5.5A maximum output current
    • Dimensions: 110 x 78 x 37mm
    As the mains terminals are open, this must not be used except in a closed secure enclosure
    Add to Cart
    £13.30
  • 12V Switching Power Supply PSU 5A (PSS5A12V)
    Open Frame Power Supply
    Ideal for use with our 12V LED strings
    • 12V nominal DC output
    • 230-250V AC input
    • Output adjustable +/- 1V
    • 5A maximum output current
    • Dimensions: 160 x 100 x 42mm
    As the mains terminals are open, this must not be used except in a closed secure enclosure
    Add to Cart
    £14.60
  • 12V Switching Power Supply PSU 3.2A (PSS3A12V)
    Open Frame Power Supply
    Ideal for use with our 12V LED strings
    • 12V nominal DC output
    • 230-250V AC input
    • Output adjustable +/- 1V
    • 3.2A maximum output current
    • Dimensions: 110 x 78 x 37mm
    As the mains terminals are open, this must not be used except in a closed secure enclosure
    Add to Cart
    £11.50
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