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1500 mAh Alkaline Battery - AA
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Price: $0.80
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Sparkfun Item #: PRT-09100 -

"These are your standard 1.5V AA alkaline batteries from Duracell. Don’t even think about trying to recharge these. Roughly 1500mAh per AA cell. Combine 4 to get ~6V peak, and ~4.8V as they hit their discharge curve. Sold in single units. But if you order four at a time, it makes it easy for us to package them. Note: This item is non-returnable. If this item arrives damaged or is not functioning properly, please do not hesitate to contact us to see if further actions may be taken." ...

2 x 18650 Battery Holder with DC2.1 Power Jack
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Price: $5.13
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DFRobot Item #: FIT0538 -

The 18650 lithium battery is a commonly used lithium battery in electronic products. It is often used in batteries of laptop computers and power banks. 18650, which refers to a battery with a diameter of 18mm and a length of 65mm.This 2 x 18650 battery holder has inner connection in series, DC 2.1 power jack, standard 7.4V output. You can connect Arduino directly.|Features|ABS shellThe spring plate is nickel plated with stainless steel.The material structure is firm and durable.|Specification|R...

2500 mAh NiMH Battery - AA
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Was: $4.87
Sale: $3.29
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Sparkfun Item #: PRT-00335 -

"2500mAh 1.2V Nickel Metal Hydride rechargeable ‘AA’ batteries. NiMH technology provides all the benefits of NiCads without the toxic ingredients and without the memory effect problem! 2500 mAh is a large capacity cell perfect for handheld, RF, and digital camera applications. We use these in everything! 26 grams per cell. Note: This item is non-returnable. If this item arrives damaged or is not functioning properly, please do not hesitate to contact us to see if further actions...

3 x 18650 Battery Holder with DC2.1 Power Jack
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Price: $6.84
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DFRobot Item #: FIT0539 -

The 18650 lithium battery is a commonly used lithium battery in electronic products. It is often used in batteries of laptop computers and power banks. 18650, which refers to a battery with a diameter of 18mm and a length of 65mm. This 3 x 18650 battery holder has inner connection in series, DC 2.1 power jack, standard 11.1V output. You can connect Arduino directly.|Features|ABS shellThe spring plate is nickel plated with stainless steel.The material structure is firm and durable.|Specification...

6xAA battery holder
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Price: $3.99
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DFRobot Item #: FIT0266 -

This battery holder can hold 6 AA battery which can make 7.2 V rechargeable battery pack from NiMH / NiCd cells or 9V battery pack from alkaline cells.It comes with a 15mm (0.59") Red & Black Wires with side by side connection. |Specification| Cell Quantity: 6 Battery type: AA Material: Plastic Storage temperature: 25&;#39;C (77F, RoomTemperature) Max Operate temperature: 80&;#39;C (176F) Size:57x90x16mm (2.24x3.54x0.63")?|ShippingList| 6xAA battery holder x1 ...

6xAA Battery Holder with DC2.1 Power Jack
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Price: $4.92
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DFRobot Item #: FIT0141 -

This battery holder can hold 6 AA battery which is able to become a 7.2 V rechargeable battery pack from NiMH / NiCd cells or 9V battery pack from alkaline cells.It comes with a DC2.1 Powerjack which can plug to Arduino directly.|Specification| Cell Quantity: 6 Battery type: AA Storage temperature: 25&;#39;C (77F, RoomTemperature) Max Operate temperature: 80&;#39;C (176F) Dimensions: 93x57x15 mm(3.66x2.24x0.59") Distance between mounting holes: 76mm(2.99") Mounting holes diameter:...

750 mAh Alkaline Battery - AAA
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Price: $0.80
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Sparkfun Item #: PRT-09274 -

"These are your standard 1.5V AAA alkaline batteries from Rayovac. Don’t even think about trying to recharge these. Roughly 750mAh per AAA cell. Combine 4 to get ~6V peak, and ~4.8V as they hit their discharge curve. Sold in single units. Note: This item is non-returnable. If this item arrives damaged or is not functioning properly, please do not hesitate to contact us to see if further actions may be taken."

9V Alkaline Battery
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Price: $3.13
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Sparkfun Item #: PRT-10218 -

"These are your standard 9 Volt alkaline batteries from Rayovac. Don’t even think about trying to recharge these. Use them with Arduinos or with a voltage regulator to get a solid 5V for your project. Check below for 9V connectors. Note: This item is non-returnable. If this item arrives damaged or is not functioning properly, please do not hesitate to contact us to see if further actions may be taken."

9V Battery Holder
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Price: $4.74
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Sparkfun Item #: PRT-10512 -

"This 9V battery holder allows your battery to snap in tight and holds it in place, which is great in situations where you don’t want the battery just hanging. It also has three mounting holes so you can attach it securely to your enclosure. It is terminated with a standard 5.5x2.1mm, center-positive barrel jack."

9V Snap Connector
Price: $2.01
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Sparkfun Item #: PRT-00091 -

"Classic 9V connector terminated with 2-pin polarized Molex connector. 5" in length."

Battery Capacity Indicator
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Price: $19.67
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DFRobot Item #: FIT0466 -

Sometimes battery information is not readily available or is hard to understand at a glance. Our Battery Capacity Indicator is a user friendly indicator interface that you can use in your projects. via GIPHY|Specification| Working voltage: 3.3V-5.5V 8 levels of brightness Size: 42*24*8mm/1.65*0.94*0.31 inches|Documents| Product Wiki |ShippingList| Battery Capacity Indicator x1 ...

Battery Holder - 18650 (PTH)
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Price: $1.21
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Sparkfun Item #: PRT-13113 -

"This is a PCB mount clip to hold a 18650 Lithium Ion Cell battery. Each battery holder is sold in single units, you’ll need two for each battery. These work great for larger, high capacity applications where a drop-in rechargable cell is needed. These little guys are low cost and easy to use! Note: This part can be found in the Electromechanical Eagle library under ‘Battery18650’. Documents: Datasheet Product Video " ...

Battery Holder - 1x18650 (wire leads)
Price: $1.65
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Sparkfun Item #: PRT-12899 -

"This is an incredibly simple one cell 18650 Battery Holder. When someone thinks of 18650 Cells they tend to think of flashlights first, which is fair since that is what they have been primarily used for. However, with this battery holder you will gain the ability to incorporate 18650 cells into applications like robotics or prototyping by simply dropping one into this device and attaching the leads, that’s it. Every 18650 Battery Holder is equipped with two 6" cables for power and...

Battery Holder - 1xAA (PTH)
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Price: $0.80
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Sparkfun Item #: PRT-07949 -

"PCB mount clip to hold a AA battery. Sold in single units, you’ll need two. These work great for small, low power applications that need a battery to run. Low cost and easy to use! Documents: Datasheet "

Battery Holder - 1xAAA (PTH)
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Price: $0.80
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Sparkfun Item #: PRT-12718 -

"PCB mount clip to hold a AAA battery. Sold in single units, you’ll need two for each battery. These work great for small, low power applications that need a battery to run. Low cost and easy to use! Documents: Datasheet "

Battery Holder - 2x18650 (wire leads)
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Price: $2.41
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Sparkfun Item #: PRT-12900 -

"This is an incredibly simple two cell 18650 Battery Holder. When someone thinks of 18650 Cells they tend to think of flashlights first, which is fair since that is what they have been primarily used for. However, with this battery holder you will gain the ability to incorporate 18650 cells into applications like robotics or prototyping by simply dropping one into this device and attaching the leads, that’s it. Every 18650 Battery Holder is equipped with two 6" cables for power and...

Battery Holder - 2xAAA with Cover and Switch
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Price: $2.41
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Sparkfun Item #: PRT-14219 -

"This 2xAAA battery holder puts a nice finishing touch on your battery-powered project. This holder features a sliding, removable cover as well as an ON/OFF switch that can be used to control power to your project. The leads are about 150mm long, and the last 5mm of them are tinned. Features: 63 x 25 x 15mm "

Battery Holder - 4xAA Square
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Price: $3.13
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Sparkfun Item #: PRT-00552 -

"Simple 4 Cell AA Battery holder with 5" tinned leads, square configuration."

Battery Holder - 4xAA to Barrel Jack Connector
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Price: $4.02
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Sparkfun Item #: PRT-09835 -

"This is a simple 4 cell AA battery holder. The 5 inch cable is terminated with a standard 5.5x2.1mm, center positive barrel jack connector. The connector mates with the barrel jack on the Arduino (among a number of other products) allowing you to easily make your project battery powered. Note: the average voltage regulator has about 1V of dropout (but can vary greatly). This pack, with normal alkaline batteries, will output ~5.5V causing a normal 5V board to run at around 4 to 4.5V. This...

Battery Holder 2xAA with Cover and Switch
Price: $2.48
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Sparkfun Item #: PRT-09547 -

"This 2xAA battery holder puts a nice finishing touch on your battery powered project. This holder features a removable, sliding cover, which is secured with a small phillips head screw. Another bonus is the 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: 67.9 x 32.8 x 18.25mm"

Battery Holder 2xAA with Cover and Switch - JST Connector
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Price: $2.41
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Sparkfun Item #: PRT-09925 -

"This 2xAA battery holder puts a nice finishing touch on your battery powered project. This holder features a removable, sliding cover, which is secured with a small Phillips head screw. Another bonus is the ON/OFF switch which can be used to control power to your project. The leads are about 150mm and are terminated with a JST-XH (2.50mm pitch) connector. Dimensions: 67.9 x 32.8 x 18.25mm"

Battery Holder 2xAAA with Cover and Switch
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Was: $2.48
Sale: $1.30
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Sparkfun Item #: PRT-09543 -

"This 2xAAA battery holder puts a nice finishing touch on your battery powered project. This holder features a sliding, removable cover as well as an ON/OFF switch which can be used to control power to your project. The leads are about 150mm long, and the last 5mm of them are tinned. Dimensions: 63 x 25 x 15mm"

Battery Holder 3xAA with Cover and Switch
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Price: $3.13
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Sparkfun Item #: PRT-10891 -

"This 3xAA battery holder puts a nice finishing touch on your battery powered project. This holder features a removable, sliding cover, which is secured with a small phillips head screw. Another bonus is the 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: 68.5 x 47.5 x 19.6mm"

Battery Holder with Switch - 2 x AA
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Price: $0.99
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Elecrow Item #: EL-PSB00202B -

    The 2 x AA Battery Holder with Switch puts a nice finishing touch on your battery powered project. This holder features a removable sliding cover which is secured with a small phillips head screw. Another bonus is the ON/OFF switch which can be used to control power to your project. The leads are about 145mm, and the last 5mm of them are tinned. It is series connection.Specification 2 AA batteries With a cover and fixed screw With a ON/OFF switch ...

Battery Holder with Switch - 3 x AA
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Price: $1.79
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Elecrow Item #: EL-PSB00302B -

    The 3 x AA Battery Holder with Switch puts a nice finishing touch on your battery powered project. This holder features a removable sliding cover which is secured with a small phillips head screw. Another bonus is the ON/OFF switch which can be used to control power to your project. The leads are about 145mm, and the last 5mm of them are tinned. It is series connection.SpecificationBattery Type : AABattery Qty : 3With Cover : YESWith Switch : YESHolder color :...

Battery Holder With Switch - 4 x AA
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Price: $1.99
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Elecrow Item #: EL-PSB00402B -

    The 4 x AA Battery Holder with Switch puts a nice finishing touch on your battery powered project. This holder features a removable sliding cover which is secured with a small phillips head screw. Another bonus is the ON/OFF switch which can be used to control power to your project. The leads are about 145mm, and the last 5mm of them are tinned. It is series connection.Specification 4 AA batteries With a cover and fixed screw With a ON/OFF switch ...

Button Cell Battery - 11.6mm (LR44)
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Price: $1.53
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Sparkfun Item #: PRT-11305 -

"These LR44 button cell batteries are fairly common but it can be hard to keep them around. They fit our digital calipers, so if you use yours as much as we use ours, you may want to go ahead and pick up a spare. Note: This item is non-returnable. If this item arrives damaged or is not functioning properly, please do not hesitate to contact us to see if further actions may be taken. Features: 1.5 VDC R44 Size Button Cell Zinc-Manganese Alkaline Compatible with LR1154, AG13, A76, 157, etc. " ...

Button Cell Battery Holder (with batteries - 4.5v)
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Price: $1.82
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DFRobot Item #: FIT0337 -

This small capsule is a 4.5V button cell battery holder for mini power solutions.Its minimalism design in clean white cylinder body and matte surface makes it an elegant power capsule in your projects. It also includes 3* LR44 cell battery to make sure that you can start right away the moment it arrives. Use this small battery holder to drive our wearable MCU--Cheapduino |Specification| Material:Plastic Color:White |ShippingList| Button Cell Battery Holder x1 LR44 cell battery x3 ...

Coin Cell Battery - 20mm (CR2025)
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Price: $3.13
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Sparkfun Item #: PRT-11928 -

"This is the CR2025 20mm coin cell battery. You may be wondering what sets this guy apart from the more common CR2032 coin cell battery, the answer is actually quite important. The CR2025 is actually 0.7mm thinner, than the CR2032, and is only rated at 165mAh. Some applications need a thinner battery to conserve space, and the CR2025 fits the bill. This thin guy is a perfect mid-sized battery for calculator and remote control applications! Note: Due to the requirements of shipping these...

Coin Cell Battery Holder - 12mm (PTH)
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Price: $2.41
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Sparkfun Item #: PRT-07948 -

"This is a through hole 12mm coin cell battery holder. It’s the unit we like to use as RTC backup and SRAM backup for GPS units. Holds battery in place with friction. Metal housing is +, PCB pad underneath is -. This battery holder is sold in single units. Documents: Datasheet "

Coin Cell Battery Holder - 12mm (SMD)
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Price: $1.53
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Sparkfun Item #: PRT-10592 -

"This is the SMD version of PRT-07948, which is the unit we like to use as RTC backup and SRAM backup for GPS units. Holds battery in place with friction. The metal housing connects to the positive side of the battery and the PCB pad underneath is connected to the negative side. Documents: Datasheet "

Coin Cell Battery Holder - 20mm (PTH)
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Price: $2.41
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Sparkfun Item #: PRT-00783 -

"Basic 20mm coin cell holder. Posts can be inserted into 0.1" perf board! Holds the common CR2032 type batteries. Documents:Datasheet"

Coin Cell Battery Holder - 20mm (SMD)
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Price: $1.53
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Sparkfun Item #: PRT-11892 -

"Now for all of your coin cell battery surface mount needs, the 20mm SMD Coin Cell Holder. This holder fits our 20mm Lithium Ion coin cell battery and holds the battery in place with friction. The metal housing connects to the positive (+) side of the battery and the PCB pad underneath is connected to the negative (-) side. Documents: Datasheet "

Coin Cell Battery Holder - 24.5mm (PTH)
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Price: $1.53
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Sparkfun Item #: PRT-08863 -

"Through hole 24.5 mm coin cell holder. This holder fits our rechargeable 24.5mm Lithium Ion coin cell battery. Holds battery in place with friction. Metal housing is +, PCB pad underneath is -. Documents: Datasheet "

CR1220-2 SMD Battery Holder - Brown
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Price: $0.66
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Elecrow Item #: EL-PSB12202B -

    It is suitable for one piece CR1220 lithium coin cell battery. Surface Mount(SMT).SpecificationContacts: copper alloyInsulator: PPSTerminal finish: gold platedOperating temperature: -55~+220 degree centigrade. ...

DC/DC Converter - 5V 5W (R-78E)
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Price: $7.96
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Sparkfun Item #: COM-14453 -

"This R-78E DC/DC Converter is a switching regulator module that has been designed to offer all the advantages of a switching regulator (high efficiency, wide input range, accurate output voltage regulation) but at an economic cost with the ease of adding it to your project. Due to the R-78E’s high efficiency of up to 91 percent at an output voltage of 5V/1A at the output, no heat sink is required. The compact TO-220 compatible SIP3 package measures only 11.6mm x 8.5mm x 10.4mm, saving...

Global Power Supply - 15V 4.34A
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Price: $60.27
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Sparkfun Item #: PRT-14338 -

"This isn’t your ordinary power supply. The Global Power Supply is a 15V, 4.34A power device specifically designed to work with the JustBoom Amp HAT for the Raspberry Pi. Additionally, as this is a “global” power supply, each order includes plug adapters for the United States, United Kingdom, EU and Australia. This supply is capable of high loads, so we recommend that you exercise caution while using it. Features: Universal / Full-range AC input Power Supply Output Type:...

IoT Power Relay
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Price: $46.21
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Sparkfun Item #: COM-14236 -

"Do you want to control a standard wall outlet device with your microcontroller, but don’t want to mess with the high-voltage wiring? The IoT Power Relay is a controllable power relay equipped with four outputs that help you create an Internet of Things project with safe, reliable power control. With the IoT Power Relay you can easily control the power going to a device with an Arduino, Raspberry Pi or other single-board computer or microcontroller. It provides an alternative to the...

LiPower - Boost Converter
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Price: $24.03
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Sparkfun Item #: PRT-10255 -

"The LiPower board is based on the incredibly versatile TPS61200 boost converter. The board is configured to be used with a LiPo battery, has solder jumper selectable 5V and 3.3V output, and an under voltage protection of 2.6V. However, the board can also be used as a general purpose buck and boost regulator with an input voltage as low as 0.3V (default UVLO is 2.6V). With such a low input voltage and quiescent current , the board also works well in energy harvesting applications that use low...

Lithium Battery Charger
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Price: $21.57
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DFRobot Item #: DFR0208 -

If you need to charge LiPo batteries, this simple charger will do just that, and do it fast! The Lithium Battery Charger can charge 3.7V LiPo battery at a rate of 500mA per hour. It is designed to charge single-cell Li-Ion or Li-Polymer batteries. Check the datasheet below to see if it will work with your battery. The board incorporates a charging circuit, status LED, connector for your battery (JST-type used in the batteries we carry), and a micro-USB connector. Four small mounting holes...

Maxlife Alkaline Batteries 20 Pack Green
Price: $13.66
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MK-Misc Item #: BATAAA-A -

Maxlife Alkaline AAA size batteries.Features and benefitsLong lasting alkaline formula.For everyday and high drain devices.Long shelf life.No mercury or cadmium.SpecificationsBattery Capacity (mAh) 1,200.00Battery Power Type AlkalineBrand Name MaxlifeCell Size AAAPackage Quantity 20Rechargeable NoVoltage (V) 1.50Perfect for Edison RobotsWe ran Maxlife and Nicad batteries in an Edison robot continuously driving it in a big circle and these are the results of how long they lasted.Green generic...

Maxlife Rechargeable Batteries AA Blue (x2)
Price: $12.68
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MK-Misc Item #: BATAA-R2 -

Maxlife Rechargeable Batteries AA BlueIdeal for high drain devices.Features and benefitsVoltage: 1.5.Capacity:2500mAh.Operating Temperature: -20 to 50 deg Cel.2 batteries in one packet.Safety Data sheet can be found here

Maxlife Rechargeable Batteries AAA Blue (x2)
Price: $12.68
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MK-Misc Item #: BATAAA-R2 -

Maxlife Rechargeable Batteries AAA BlueIdeal for high drain devices.Features and benefitsVoltage: 1.5.Capacity:900mAh.Operating Temperature: -20 to 50 deg Cel.2 batteries in one packet.Safety Data sheet can be found here

MicroUSB Battery Holder (3xAA)
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Price: $3.17
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DFRobot Item #: FIT0362 -

This battery holder can hold 3 AA batteries which provides 3.6V rechargeable battery pack with NiMH / NiCd cells or 4.5V battery pack with Alkaline cells. You will be able to power your Arduino with this battery holder via MicroUSB interface directly. |Specification| Cell Quantity: 3 Battery type: AA Cable length:130mm(5.12") Material: Plastic Storage temperature: 25&;#39;C (77F, RoomTemperature) Max Operate temperature: 80&;#39;C (176F) Size:57x48x15mm(2.24x1.89x0.59")|ShippingList| MicroUSB...

SparkFun 3.3V Step-Up Breakout - NCP1402
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Price: $9.56
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Sparkfun Item #: PRT-10967 -

"The NCP1402 is a 3.3V DC-DC converter. The breakout board will accept voltage inputs between 1 and 3 Volts (such as 1 or 2 AA batteries) and output a constant, low ripple 3.3V output capable of sourcing up to 200 mA. This board is great for supplying power to 3.3V sensors or providing 3.3V from a a single AA battery. The breakout board includes the necessary peripheral components. The input, output and ground pins are broken out on a 0.1" grid to allow easy access on a breadboard. Documents:...

SparkFun Adjustable LiPo Charger
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Price: $17.60
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Sparkfun Item #: PRT-14380 -

"The SparkFun Adjustable LiPo Charger is a single-cell lithium polymer (LiPo) and lithium ion battery charger. Because it’s adjustable, this charger will be able to safely charge most of our single-cell batteries with ease. With its onboard charge rate selector, you will be able to set the maximum amount of current to charge your battery from 15mA to 500mA. Once the board is configured for the battery, you can connect power from either a microUSB cable or the pins below the USB connector...

SparkFun Battery Babysitter - LiPo Battery Manager
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Price: $32.06
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Sparkfun Item #: PRT-13777 -

"The SparkFun Battery Babysitter is an all-in-one single-cell Lithium Polymer (LiPo) battery manager. It’s half battery charger, half battery monitor, and all you’ll ever need to keep your battery-powered project running safely and extensively. The Battery Babysitter features a pair of Texas Instruments LiPo-management ICs: a BQ24075 battery charger and a BQ27441-G1A fuel gauge. The charger supports adjustable charge rates of up to 1.5A, as well as USB-compliant 100mA and 500mA...

SparkFun LiPo Charger Basic - Micro-USB
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Price: $12.78
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Sparkfun Item #: PRT-10217 -

"If you need to charge LiPo batteries, this simple charger will do just that, and do it fast! The SparkFun LiPo Charger Basic is stripped down of all features and just does one thing well - charge 3.7V LiPo cells at a rate of 500mA. It is designed to charge single-cell Li-Ion or Li-Polymer batteries. Check the datasheet below to see if it will work with your battery. The board incorporates a charging circuit, status LED, connector for your battery (JST-type used in the batteries we carry), and...