These battery clips (HCBATT0006) have a standard male 2.1mm DC connector at one end and a PP3 9V battery clip / buckle at the other. The wire measures approximately 7.5cm. The D.C connector has the positive at the tip making it suitable for most Arduino boards with a DC connector.

This is a Female 5.5 x 2.1mm Power sockets ideally suited to connecting to DC jacks that then adapts to two screw terminals. The sockets function by separating the central core and outer component of the jack and passing these through to screw terminals. The adapter is solidly constructed and housed in rubber to allow repeated use.

6x AA cell ABS plastic battery holder (HCBATT0006) allowing for easy insertion and removal of batteries. The holder has colour coded wires with tinned ends allowing for easy solder to a PCB or terminal. It has two mounting holes for permanently fixing to a surface. Depending on battery type fitted this holder can provide approximately 6V DC for remotely powering your projects.

This XL6009 DC-DC boost/step-up converter module (HCMODU0091) is based on the XLSemi XL6009 DC-DC converter and is capable of boosting a wide range of input voltages up to a maximum of 45V. It output can supply up to 2.5A out current (dependent on input voltage and operating environment) and has built in thermal limiting protection circuitry...

This DC to DC Step-Down Adjustable Power Supply Module is based on the LM2596 switching regulator...

This adapter converts CEE7 (XVI) Euro plug to standard UK 3 pin plug. Fused at 3A, this plug is constructed using tough thermoplastic nylon. It is a simple, safe and quick method of converting euro plugs for use is UK sockets. There is no need to strip cables or remove existing plugs...

• 1300mAh capacity
• Size: AA
• NiMH rechargeable
• 1000 charges (approx.)
• Packaging: 4 pack blister card - RRP: £5.99

A USB to 2.1mm DC jack cable with a built-in DC to DC step up converter which will convert the 5V DC voltage supplied by a USB socket up to 9V DC at the jack socket. This makes the cable useful for powering electronics and projects from a standard USB port or charger where 5V is insufficient voltage.

• 900mAh capacity
• Size: AAA
• NiMH rechargeable
• 1000 charges (approx.)
• Packaging: 4 pack blister card - RRP: £4.99

This is a male 5.5 x 2.1mm Power sockets ideally suited to connecting to DC jacks that then adapts to two screw terminals. The sockets function by separating the central core and outer component of the jack and passing these through to screw terminals. The adapter is solidly constructed and housed in rubber to allow repeated use.

• 250mAh capacity
• Size: 9v
• NiMH rechargeable
• 1000 charges (approx.)
• Packaging: 1 pack blister card - RRP: £7.99

This enclosed 4 x AA battery box has a built-in on-off switch, colour-coded leads and a detachable lid which keeps the batteries secure.