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Li-Ion Power Pack Charger Full Kit

View 28989: Li-Ion Power Pack Charger Full Kit (Lithium-Ion (Rechargeable) )

28989: Li-Ion Power Pack Charger Full Kit (Lithium-Ion (Rechargeable) )

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Parallax Inc.
Jameco Part no. 2157141
Manufacturer PARALLAX INC.
Manufacturer no. 28989
   NCNR (Non-Cancelable, Non Returnable)
web exclusive
Pricing & Availability


# of Unit Price
1+ $74.95
5+ $67.95
  • Availability:Ship  1 Wks ARO 

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Li-ion Power Pack Charger Full Kit

The Li-ion Power Pack-Charger - 2 Cell is an integrated storage cell and charging system on a single 3" x 4" printed circuit board. It's compatible with most 18650-size Li-ion cells.


  • PCB-mounted cell holders with on-board charging circuitry
  • Multiple power input/output options
  • On-board output fuse protection
  • Nominal 7.4 VDC output; 8.2 VDC maximum
  • Standard 3" x 4" PCB footprint integrates well with the Board of Education® (#28150), Propeller™ Proto Board (#32212), or any application needing a reliable power supply with an integrated charging system
  • Automatic charge/discharge switching circuitry
  • Holds two rechargeable 3.7 volt Li-ion 18650-size cells
  • Multiple LED indicators provide charge readiness information for each individual cell; status key for the LED indicators is printed on the board.
  • Aggressive holders retain cells in any board orientation and in moderate shock environments, such as mobile robotic applications. Cells are not permanent, and are easily replaced.
  • Dedicated circuitry continuously monitors the charging process to ensure safety, efficiency, and to maximize the number of charge/discharge cycles of each cell.

Kit Contents:

Application Ideas:

  • Portable power for data-logging applications
  • Mobile robots
  • Standby power / automatic power-switching
  • Automatic charging circuits
  • Stackable auxiliary power solutions
  • Boe-Bot® / Board of Education / Propeller Proto Board Auxiliary Power Supplies
  • Stingray™ Robot (#28980) battery pack upgrade

Key Specifications:

  • Charging Power Requirements: +5 to +12 VDC @ 1amp (min.); 2.1 mm barrel jack, center positive supply (Jameco's 9V@1A wall adapter works well)
  • Power Output: Unregulated nominal 7.4 VDC @ 1800 - 2600 mAh (depending on cells used)
  • Dimensions: 3.0 x 4.0 x 1.0 in (7.6 x 10.2 x 2.54 cm)
  • Charging Time: 1 - 6 hrs or more, depending upon the discharge level and capacity of the battery

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