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Batteries, Adapters & Power Supplies
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JST Connector CR2032 Lithium Battery with Wire Leads (CMOS)
This CR2032 lithium metal coin battery has wire leads and a JST SHR-02V-S-B (1mm pitch) connector attached for easy connection to your equipment.
$4.99 $2.49
Item#: 17303 Age: 18+
(4 customer reviews)
MOLEX Connector CR2032 Battery with Wire Leads (CMOS)
A wrapped CR2032 battery with attached wire leads - excellent as a CMOS motherboard battery of for hobby electronics and science fair projects.
$4.99 $2.49
Item#: 16798 Age: 18+
(11 customer reviews)
Reverse Polarity MOLEX Connector CR2032 Battery with Wire Leads (CMOS)
A reverse-polarity wrapped CR2032 battery with attached wire leads - excellent for hobby electronics and science fair projects
$4.95 $2.49
Item#: 17156 Age: 18+
(1 customer reviews)
ICR 18650 Blue Lithium-Ion Rechargeable Battery - 3.7V 2600mAh
This standard 3.7V rechargeable Lithium 18650 battery cell is perfect for solar science fair projects involving panels.
$9.99 $4.99
Item#: 17118 Age: 18+
(7 customer reviews)
Reverse Polarity JST Connector CR2032 Battery with Wire Leads (CMOS)
Wrapped CR2032 battery with wire leads and JST SHR-02V-S-A (1.00 mm pitch) connector pre-attached.
$4.99 $2.49
Item#: 17361 Age: 18+
9V Battery Snap to DC Plug Adapter
Don't have a 9V power adapter? No problem! Use this handy 9V battery adapter.
$1.99 $0.79
Item#: 17088 Age: 14+
CR2032 Battery with Wire Leads and Connector (CMOS)
This is a standard CMOS computer or laptop motherboard replacement battery. High-quality CR2032 Lithium ion cell with leads and connector.
$4.99 $2.49
Item#: 16483 Age: 18+
(17 customer reviews)
Tipsun AA Alkaline Batteries 2-pack - Mercury and Cadmium Free
Excellent AA alkaline batteries at an amazingly low price. SGS compliant and Mercury and Cadmium free.
$1.19 $0.95
Item#: 17362 Age: 14+
ICR 18650 Green Flat-Top Lithium-Ion Cell Rechargeable Battery - 3.7V 2600mAh
This rechargeable 18650 Lithium battery cell has a flat top and is perfect for battery power banks and holders.
$9.99 $4.95
Item#: 17117 Age: 18+
(1 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.
$5.99 $3.59
Item#: 17115 Age: 18+
Adjustable USB Power Supply - DP2F - 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.
$19.99 $14.95
Item#: 16887 Age: 18+
CR1225 Lithium Battery - 5 pack
This is an affordable pack of five (5) CR1225 lithium batteries. Each battery is 3 Volts.
$2.99 $1.25
Item#: 17031 Age: 14+
4 AA Panasonic Alkaline Plus Batteries
This is a four-pack of genuine AA Panasonic Alkaline Plus batteries. Great for science fair projects or science school lab.
$3.99 $2.19
Item#: 15466 Age: 18+
Lithium Ion Battery Charger - 4 Bays - USB Powered
Keep your projects powered up and ready to go with our Lithium Ion Battery Charger featuring four independent bays.
$14.99 $7.95
Item#: 17488 Age: 18+
USB Rechargeable Lithium-Ion 9V Battery with Cable
You can use it just like a standard 9V battery, and you can re-charge it with just a standard USB port up to 1000 times,
$14.99 $7.95
Item#: 17344 Age: 18+
Two USB Rechargeable Lithium-Ion AA Batteries with Cable
You can use them just like standard AA batteries, and you can re-charge them using just a standard USB port up to 1000 times.
$19.99 $9.95
Item#: 17345 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.
$29.99 $17.95
Item#: 17067 Age: 18+
(1 customer reviews)
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!
$2.99 $1.29
Item#: 17116 Age: 18+
Single Lithium Battery Charge Controller 5V 1A
This handy little module board will allow you to charge a single 18650 Lithium rechargeable battery safely
$4.95 $2.95
Item#: 17301 Age: 18+
Green USB Power Bank - 2600mAh 5V 1A
This affordable USB power bank is great for charging your mobile devices or powering your hobby science projects.
$12.99 $7.95
Item#: 17112 Age: 18+
4 AAA Panasonic Alkaline Plus Batteries
Genuine AAA Panasonic Alkaline Plus batteries - 4 pack.
$3.99 $2.19
Item#: 15468 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!
$3.99 $1.95
Item#: 17136 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.
$12.99 $7.95
Item#: 17086 Age: 18+
Breadboard Power Supply 3.3V 5V USB Arduino
Affordable breadboard power supply with both 3.3V and 5V output.
$4.99 $2.49
Item#: 16758 Age: 14+
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.
$9.99 $5.99
Item#: 16762 Age: 14+
3-24V 2A Adjustable DC Power Supply with Digital LCD Display
You can adjust the output of this power supply from 3V to 24V DC, and it will give you a maximum of 2A current - which is more than enough to power all your science projects.
$29.99 $19.95
Item#: 17168 Age: 18+
4-Pack of INR18650 Lithium-Ion Rechargeable Batteries - 3.7V 2200mAh
These rechargeable Lithium INR 18650 batteries are an excellent replacement for more expensive ICR 18650 ones.
$19.99 $12.95
Item#: 17356 Age: 18+
10 pack CR2032 Batteries with Wire Leads (CMOS)
Save with this 10 pack of CR2032 batteries with wire leads!
$29.99 $24.90
Item#: 16639 Age: 18+
(9 customer reviews)
3-12V 5A Adjustable DC Power Supply with Digital LCD Display
Need an affordable DC power supply with an adjustable voltage and digital display? Look no further! This power supply is excellent for DIY hobby electronics projects, science fair projects, and school science labs.
$29.99 $19.95
Item#: 17169 Age: 18+
Double 18650 Battery Charge Shield - 3V 5V DC Supply
Power all your hobby circuits with this handy battery shield.
$17.99 $9.99
Item#: 16768 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.
$19.99 $15.95
Item#: 17114 Age: 18+
Genecon DUE - 12V Hand-Crank DC Generator
Versatile and durable hand-crank DC generator that's perfect for science teachers.
$39.99 $24.95
Item#: 17501 Age: 18+
Genecon V3 - 3V Hand-Crank DC Generator
A compact and safe 3V hand-crank DC generator ideal for science classrooms.
$39.99 $24.95
Item#: 17502 Age: 18+
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!
$4.99 $2.59
Item#: 16657 Age: 14+
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.
$9.99 $2.95
Item#: 17126 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
$6.99 $2.95
Item#: 15993 Age: 18+
(1 customer reviews)
Thermoelectric Generator
Use this generator to demonstrate the 2nd law of thermodynamics!
$49.99 $36.95
Item#: 14618 Age: 15+
(3 customer reviews)
Adjustable DC Switching Power Supply - 0-30V 5A
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 5A, and features a clean and easy-to-read digital display.
$129.99 $79.95
Item#: 17239 Age: 18+
Power Pro DC Adapter - 12V 1000mA
Use this powerful DC adapter for a variety of electrical applications!
$12.99 $4.99
Item#: 14926 Age: 15+
(6 customer reviews)
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
$29.99 $19.95
Item#: 16564 Age: 18+
Panasonic CR2032 CMOS Lithium Battery with Leads and MOLEX Connector
High-quality Panasonic CR2032 3V battery with wire leads and MOLEX 51021-0200-B (1.25mm pitch) connector already attached.
$5.99 $2.95
Item#: 17030 Age: 18+
(12 customer reviews)
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.
$179.99 $139
Item#: 16948 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.
$79.99 $59.95
Item#: 16120 Age: 16+
5200mAh USB Mobile PowerBank - 5V 1A
Simple and reliable USB power bank.
$22.99 $15.95
Item#: 16882 Age: 14+
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.
$39.99 $29
Item#: 16346 Age: 18+
(2 customer reviews)
12V 9800mAh Lithium Battery
This 12V 9800mAh 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.
$99.99 $64.99
Item#: 16357 Age: 14+
3M Double-Sided Adhesive Mounting Dots - 50pcs - 23mm diameter
These double-sided adhesive dots are perfect when mounting CMOS batteries to the motherboard, or any other crafting project.
$12.99 $6.95
Item#: 17389 Age: 18+
