Li-ion Small Robot Power Pack-Charger

  • 28988: Li-ion Small Robot Power Pack-Charger
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$20.12 (40%)
Product ID: 28988


Quantity limited to stock on hand. No more need to remove rechargeable AA cells and place them into a separate charging station, or replace non-rechargeable alkaline cells. Simply plug in a 7.5 VDC, 1 A wall transformer and the charging circuitry does the rest, automatically. The Li-ion Small Robot Power Pack-Charger (formerly the Li-ion Boe-Bot Power Pack-Charger), is a solution that can replace up to several thousand AA alkaline batteries over the Li-ion cells' lifetime.

Two Li-ion 18650-size cells and a power supply are required, not included. We recommend our High Capacity Li-ion Cell and 7.5 VDC, 1 A Power Supply.

Key Features:    

  • Fits into the Small Robot chassis, replacing the 4- or 5- cell AA battery pack.
  • Holds two rechargeable/replaceable 3.7 V Li-ion 18650 cells.
  • Provides up to 6 hours of continuous motorized operation (depending on cell capacity).
  • Rechargeable Li-ion cells don’t need to be removed from your robot for recharging—charging circuitry is built into the board.
  • Multiple LED indicators provide charge readiness information for each individual cell; status key for the LED indicators is printed on the board.
  • Comes with all hardware and cables necessary for installation into your existing robot.          
  • Automatic charge/discharge switching circuitry.

Application Ideas:

  • Portable power for data-logging applications
  • Mobile Robots


  • Aggressive holders retain cells in any board orientation and in moderate shock environments, such as mobile robotic applications.
  • Dedicated circuitry continuously monitors the charging process to ensure safety, efficiency, and to maximize the number of charge/discharge cycles of each cell.
  • On-board output 2 Amp Mini Fuse protection  
  • Nominal 7.4 VDC output 8.2 VDC maximum
  • Charging Power Requirements:  +5–12 VDC @ 1 A (min.);  2.1 mm center positive barrel jack supply
  • Power Output:  Unregulated nominal 7.4 VDC @ 1800–2600 mAh (depending on cells used)
  • Charging Time:  1 to 6 hours, depending upon the discharge level and capacity of the cells used
  • Dimensions: 3.0 x 4.0 x 1.0 in (7.6 x 10.2 x 2.54 cm)
  • Operating temp range: -40 to +185 °F (-40 to +85°C)

Downloads & Documentation

Product Specific Downloads
Download Details More Info
Li-ion Boe-Bot Power Pack Schematic - 103.11 KB | updated: 24 Sep 2012 - 10:44 am
Li-ion Small Robot Power Pack Documentation - 569.99 KB | updated: 03 Mar 2015 - 1:34 pm

Additional Resources