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Power, Batteries and Voltage Regulators



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  1. Polymer Lithium Ion Batteries - 6Ah JST Connector

    Polymer Lithium Ion Batteries - 6Ah JST Connector


    If you need some juice, this 6Ahr triple pack is for you. These are very slim, extremely light weight batteries based on the new Polymer Lithium Ion chemistry. This is the highest energy density currently in production. Each cells outputs a nominal 3.7V at 2000mAh! This solid 3 cell pack (6Ahr) comes terminated with a standard 2-pin JST connector - 2mm spacing between pins. Do not attempt to charge these with anything but a charger specifically designed for Lithium Ion batteries.

    These three cells have been match for internal impedance and can be fully charged and discharged in parallel.

    • 2C continuous discharge
    • Excellent long-term self-discharge rates (<8% per month)
    • Robust power source under extreme conditions (-25 to 60C)

    Dimensions: 0.75x2.1x2.1" (19x54x54mm)

    Weight: 110g (3.88oz)


    Learn More
  2. Solar Cell Large

    Solar Cell Large


    Packaged solar cell with barrel plug termination. This is a custom cell produced for SFE - not a small toy surplus item! This unit is rated for 8V open voltage and 310mA short circuit. We actually took a random unit outside and measured 9.15V open voltage and 280mA short circuit. Under ideal sun conditions (high-noon, clear sky) 310mA is very possible but will vary from cell to cell. We can even get 110mA from inside our office windows!

    Termination is a 5.5mm x 2.1mm barrel plug, center positive on a 2m cable. Monocrystalline high efficiency cells at 15-15.2%. Mates directly with many of our development boards. Unit has a clear epoxy resin coating with hard-board backing. Robust sealing for out door applications!

    Dimensions: 7 x 4.5" Learn More


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