Batteries, Adapters & Power Supplies
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+
(4 customer reviews)
Panasonic CR2032 CMOS Lithium Battery with Leads and Connector
High-quality Panasonic CR2032 3V battery with wire leads and MOLEX 51021-0200-B (1.25mm pitch) connector already attached.
Item#: 17030 Age: 18+
(1 customer reviews)
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+
(17 customer reviews)
Reverse Polarity CMOS CR2032 Battery with Molex Connector
A reverse-polarity wrapped CR2032 battery with attached wire leads - excellent for hobby electronics and science fair projects
Item#: 17156 Age: 18+
9V Battery Snap to DC Plug Adapter
Don't have a 9V power adapter? No problem! Use this handy 9V battery adapter.
Item#: 17088 Age: 14+
4 AAA Panasonic Alkaline Plus Batteries
Genuine AAA Panasonic Alkaline Plus batteries - 4 pack.
Item#: 15468 Age: 18+
Breadboard Power Supply 3.3V 5V USB Arduino
Affordable breadboard power supply with both 3.3V and 5V output.
Item#: 16758 Age: 14+
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+
Digital USB Power Supply - Adjustable 1V-24V 1A
With this handy USB power supply you can get any voltage from 1V to 24V. Just plug it into your USB power bank or USB phone charger.
Item#: 17086 Age: 18+
Digital Adjustable USB Power Supply - 1V to 30V 2A
With this handy USB power supply you can get any voltage from 1V to 30V and up to 2A current.
Item#: 17067 Age: 18+
Analog Adjustable USB Power Supply - 1V to 30V 2A
With this handy USB power supply you can get any voltage from 1V to 30V and up to 2A current with potentiometer (analog) adjustments.
Item#: 17114 Age: 18+
Adjustable USB Power Supply - 0.5V to 30V 2A
With this handy USB power supply you can get any voltage from 0.5V to 30V and up to 2A current.
Item#: 16887 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+
(1 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+
(1 customer reviews)
Power Pro DC Adapter - 12V 1000mA
Use this powerful DC adapter for a variety of electrical applications!
Item#: 14926 Age: 10+
(5 customer reviews)
Fast USB Charger Adapter - 5V 2A
This fast charge (5V 2A) power adapter can be used to charge mobile phones, tablets and other devices. It can also be used as a power supply for various science and electronics experiments.
Item#: 17115 Age: 18+
3.7V 5000mAh 18650 Lithium Battery Cell
This 3.7V 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#: 16358 Age: 14+
(2 customer reviews)
Alkaline Button Cell Watch Batteries Assortment - set of 20
Great assortment of button cell watch batteries at a great price! Must-have for any household.
Item#: 17126 Age: 18+
2 D Panasonic Alkaline Plus Battery
Genuine D Panasonic Alkaline Plus batteries - 2 pack.
Item#: 15470 Age: 18+
4 AA Panasonic Alkaline Plus Batteries
Genuine AA Panasonic Alkaline Plus batteries - 4 pack.
Item#: 15466 Age: 18+
9V Panasonic Alkaline Plus Battery
Genuine 9V Panasonic Alkaline Plus battery.
Item#: 15469 Age: 18+
Hand Held DC Generator
An excellent demonstration model for teaching about the conversion of mechanical energy to electrical energy!
Item#: 10876 Age: 7+
(3 customer reviews)
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+
10 pack CR2032 Batteries with Wire Leads (CMOS)
Save with this 10 pack of CR2032 batteries with wire leads!
Item#: 16639 Age: 18+
(1 customer reviews)
18650 Battery Charge Shield - 3V 5V DC Supply
Great for teachers - no more wasting AA batteries! With outputs of 3V and 5V DC you can use this shield with a variety of circuits with lightbulbs, buzzers, DC motors, LEDs, etc.
Item#: 16762 Age: 14+
CR1225 Lithium Battery - 5 pack
This is an affordable pack of five (5) CR1225 lithium batteries. Each battery is 3 Volts.
Item#: 17031 Age: 14+
Double 18650 Battery Charge Shield - 3V 5V DC Supply
Power all your hobby circuits with this handy battery shield.
Item#: 16768 Age: 18+
AG13 LR44 1.5V Alkaline Batteries - 10 pack
A blister pack of ten AG-13 LR44 alkaline batteries, ideal for watches, clocks, calculators, electronics, cameras, LED tools, and so much more!
Item#: 17136 Age: 18+
CR2025 3V Lithium Battery - 5 pack
A blister pack of 5 CR2025 Lithium batteries, ideal for LED remote controls, watches, clocks, calculators, electronics, cameras, LED tools, and so much more!
Item#: 17116 Age: 18+
Thermoelectric Generator
Use this generator to demonstrate the 2nd law of thermodynamics!
Item#: 14618 Age: 12+
(3 customer reviews)
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+
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+
18650 Blue Lithium-Ion Rechargeable Battery - 3.7V 2600mAh
This standard 18650 3.7V rechargeable Lithium battery cell is perfect for solar science fair projects involving panels.
Item#: 17118 Age: 18+
18650 Green Lithium-Ion Cell Rechargeable Battery - 3.7V 2600mAh
This green version of the standard 18650 Lithium cell has a flatter + terminal which makes it perfect when building multiple cell battery banks.
Item#: 17117 Age: 18+
12V 21Ah Lithium-Ion Rechargeable Battery
This high-capacity Lithium-ion rechargeable battery is great for your next solar energy science project, electric vehicles and bikes, scooters, golf carts and more.
Item#: 16948 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+
(1 customer reviews)
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+
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+
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+
