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Battery Holder 3xAA with Cover and Switch - JST Connector

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Item #: PRT-18769 -
Price: $3.61
Sparkfun

This 3xAA battery holder puts a nice finishing touch on your battery powered project. This holder features a removable, sliding cover as well as an ON/OFF switch that can be used to control power to...

This 3xAA battery holder puts a nice finishing touch on your battery powered project. This holder features a removable, sliding cover as well as an ON/OFF switch that can be used to control power to your project. The 6" (~150mm) cable has been terminated with a JST connector. Note: Please keep in mind that JST connectors are not suited for constant and repeated removal and insertions and may wear out over time.

Buck/Boost DC/DC Converter - 8-36V to 12V/6A

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Item #: COM-18732 -
Price: $27.64
Sparkfun

This is an industrial grade DC Buck-Boost converter that inputs 8V to 36V and outputs 12V up to 6A or 72W. With plenty of heatsinking and protection, this DC block is perfect for battery...

This is an industrial grade DC Buck-Boost converter that inputs 8V to 36V and outputs 12V up to 6A or 72W. With plenty of heatsinking and protection, this DC block is perfect for battery applications (such as SLAs or LFPs) that need to power a steady load (such as 12V router and WiFi equipment) even while the input is varying (battery charge/discharge). 94.2% efficiency makes this a good, plug and play, DC Step-Up/Down solution. Features: Input Voltage: 8 to 36VDC Input Current: 11A DC...

Step-Down DC/DC Converter - 36-75V to 5V/20A

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Item #: COM-18733 -
Price: $57.68
Sparkfun

This is an isolated DC-DC converter that accepts 36-72VDC and outputs 5VDC and 20A. Its high efficient, isolated design makes it perfect for powering low voltage devices off of high power batteries...

This is an isolated DC-DC converter that accepts 36-72VDC and outputs 5VDC and 20A. Its high efficient, isolated design makes it perfect for powering low voltage devices off of high power batteries or power sources. The device comes in an IP65 rated enclosure for robust use cases and features a number of safety considerations such as Over-temperature protection, Ouput Over-voltage protection, and Reverse-voltage protection. Features: Input Voltage: 36-75V DC (78V Max) Max Input Current:...