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Power / Batteries

Batteries
Battery Holders / Adapter
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Power Supply / Voltage Regulator
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Renewable Energy
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Newest Items First
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Pololu 9V, 15A Step-Down Voltage Regulator D24V150F9
$85.95  
3 pc(s)
This synchronous switching step-down (or buck) regulator takes an input voltage of up to 40 V and efficiently reduces it to 9V with an available output current of around 15 A. Typical efficiencies of 80% to 95% along with its high current capabilities make this regulator well suited for...
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Pololu 5V, 15A Step-Down Voltage Regulator D24V150F5
$83.95  
1 pc(s)
This synchronous switching step-down (or buck) regulator takes an input voltage of up to 40 V and efficiently reduces it to 5 V with an available output current of around 15 A. Typical efficiencies of 80% to 95% along with its high current capabilities make this regulator well suited for...
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9V Battery Holder with On/Off Switch, 3-Pin JST
$2.50  
5 pc(s)
Enclosed battery holder for 9V battery. This holder features a lid that slides over the batteries and snaps into place to fully enclose the battery. It also features a switch that lets you open and close the electrical connection between the batteries and the holder's leads. The leads are...
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4 x AA Battery Holder with On/Off Switch, 3-Pin JST
$2.80  
5 pc(s)
Enclosed battery holder for four AA cells. This holder features a lid that slides over the batteries and snaps into place to fully enclose the battery. It also features a switch that lets you open and close the electrical connection between the batteries and the holder's leads. The leads are...
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Hand Crank Generator
$14.95  
Out-of-stock
This hand-held crank generator produces up to 15 volts of DC electricity. The integrated PCB includes a full bridge rectifier to provide the same output polarity for either direction the hand crank is turning. In addition, other devices can be easily connected to the screw terminal.
Out-of-stock
-33%
8 x AA Battery Holder - Cube End-to-End
$1.00 $1.50  
17 pc(s)
Battery holder for eight AA batteries with ~140mm leads, cube end-to-end configuration.
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-50%
3 x AAA Battery Holder
$0.50 $1.00  
50 pc(s)
Battery holder for three AAA batteries, terminated with ~150mm leads
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-30%
Relay SPDT Sealed - 3V
$0.95 $1.35  
61 pc(s)
These are general purpose, Single Pole - Double Throw (SPDT) sealed relays. Use them to switch high voltage, and/or high current devices. This relay's coil has switch voltage of 3V at 120mA. The contacts are rated 10A at 120VAC, 10A at 30VDC. Features : 3V DC SPDT...
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DC Barrel Jack Plug - Female
$0.50  
39 pc(s)
This female barrel jack plug is great for adding a common connector to the end of wires. This jack is compatible with 5.5x2.1mm barrel connectors. The outer shell unscrews to reveal solder terminals and a crimp strain relief. The outer shell has strain relief as well.
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Breadboard Power Supply 5V/3.3V
$2.95  
5 pc(s)
This Breadboard Power Supply Module plugs directly into a solderless breadboard and provides both 3.3V and 5V power directly to the breadboard power rails. The board accepts 7 to 12V DC input via the barrel jack or 5V via the mini-B USB port. It provides two regulated, fuse protected outputs...
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-9%
LiPo Charger Plus - USB Type-C
$15.00 $16.50  
1 pc(s)
The SparkFun LiPo Charger Plus is the souped-up power option in the SparkFun line of single-cell lithium polymer (LiPo) battery chargers. With this iteration, we've changed the input charge connector to USB-C and provided charge rate selection as well as optional thermal protection. Charge,...
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-46%
1 x AA Battery Holder with Cover and Switch
$1.00 $1.85  
19 pc(s)
This 1xAA battery holder puts a nice finishing touch on your battery powered project. This holder features a removable sliding cover and an ON/OFF switch which can be used to control power to your project. The leads are about 150mm, and the last 5mm of them are tinned. Dimensions: 69 x 26...
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