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Batteries, Adapters & Power Supplies

CR2032 Battery with Wire Leads and Connector (CMOS, Laptop, Notebook, Motherboard, Bristlebots, etc.)

A wrapped CR2032 battery with attached wire leads - excellent for hobby electronics and science fair projects

Item#: 16483 Age: 14+
5 star rating (7 customer reviews)

Hand Held DC Generator

An excellent demonstration model for teaching about the conversion of mechanical energy to electrical energy!

Item#: 10876 Age: 7+
5 star rating (3 customer reviews)

Deluxe DC Crank Generator

A hand-cranked 12-volt DC generator, useful for experiments or as a unique flashlight

Item#: 15239 Age: 10+
5 star rating (1 customer reviews)

10 pack CR2032 Batteries with Wire Leads (CMOS)

Save with this 10 pack of CR2032 batteries with wire leads!

Item#: 16639 Age: 18+

Power Pro DC Adapter - 12V 1000mA

Use this powerful DC adapter for a variety of electrical applications!

Item#: 14926 Age: 10+
5 star rating (3 customer reviews)

Thermoelectric Generator

Use this generator to demonstrate the 2nd law of thermodynamics!

Item#: 14618 Age: 12+
5 star rating (3 customer reviews)

4 AA Panasonic Alkaline Plus Batteries

Genuine AA Panasonic Alkaline Plus batteries - 4 pack.

Item#: 15466 Age: 18+

CR2032 Lithium Cell Batteries - 9 pack

A blister pack of 9 3V CR2032 Lithium Cell Batteries, usually used for remote controls, but, more frequently, computer motherboards.

Item#: 15992 Age: 18+

9V Panasonic Alkaline Plus Battery

Genuine 9V Panasonic Alkaline Plus battery.

Item#: 15469 Age: 18+

4 AAA Panasonic Alkaline Plus Batteries

Genuine AAA Panasonic Alkaline Plus batteries - 4 pack.

Item#: 15468 Age: 18+

2 AAA Panasonic Alkaline Plus Batteries

Genuine AAA Panasonic Alkaline Plus batteries - 2 pack.

Item#: 15467 Age: 18+

2 D Panasonic Alkaline Plus Battery

Genuine D Panasonic Alkaline Plus batteries - 2 pack.

Item#: 15470 Age: 18+

AG-13 Alkaline Batteries - 20 pack

A 20-pack of AG-13 Alkaline Batteries, ideal for watches, clocks, calculators, electronics, cameras, LED tools, and more

Item#: 15993 Age: 18+

10A 12V Lithium Battery Solar Charge Controller

Solar charge controllers are essential for ensuring the smooth functioning of a solar panel and its battery. This 10A model is suitable for 12V/24V DC.

Item#: 16345 Age: 18+

20A 12V Lithium Battery Solar Charge Controller

20A Solar Charge Controller, suitable for 12V/24V DC units. Solar charge controllers are essential for ensuring the smooth functioning of a solar panel and its battery.

Item#: 16346 Age: 18+

12V 9800mAh Lithium Battery

This 12V lithium battery is perfect for solar science fair projects involving panels. Also great for building an off-grid solar power system for camping, RVs, or boats.

Item#: 16357 Age: 14+

2xAA to D Battery Converter

Plastic casing that uses 2 AA batteries to produce the same voltage output as a D battery (1.5V)

Item#: 16424 Age: 14+

CR2032 Battery with Wire Leads and Molex 51021-0200-B (1.25mm pitch) Connector (CMOS)

A wrapped CR2032 battery with attached wire leads - excellent for hobby electronics and science fair projects

Item#: 16798 Age: 14+

3.7V Lithium Battery Indicator/Tester

This visual/graphic voltmeter is excellent for checking the levels of 3.7V lithium cells - get the most from your batteries and devices!

Item#: 16657 Age: 14+

12V 4400mAh Lithium Battery

This 12V lithium battery is perfect for solar science fair projects involving panels. Also great for building an off-grid solar power system for camping, RVs, or boats.

Item#: 16356 Age: 14+

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Lab DC Switching Power Supply 0-30V 0-3A

This power supply is perfect for use in classrooms or laboratories. The unit produces variable 0 to 30V DC at up to a maximum of 3A, and features a clean and easy-to-read digital display.

Item#: 16351 Age: 18+

3V-12V DC Variable Power Supply

Forget the batteries! This safe and reliable power supply is a convenient source of low voltage DC power. Dial easily turns to select the desired voltage and it plugs into a standard electrical outlet. 3V-12V DC, 1.25 amps max.

Item#: 16120 Age: 16+

Switching Power Supply - 3V to 12V

This innovative adapter uses state-of-the-art switching technology to allow the user to choose various output voltages from a range between 3V and 12V

Item#: 16564 Age: 18+

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At xUmp.com, we are passionate about science. We believe in hands-on learning and making science fun. - Anton Skorucak, Physicist and Founder

At xUmp.com you will find a large selection of scientific products carefully curated by real scientists and educators. We sell everything from educational toys, teacher supplies for science classroom, lab equipment, science toys, science fair supplies, classroom equipment, chemistry glassware, chemistry lab equipment, physics demos, electronics supplies, robots, science kits to geeky science gifts.