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Thread: Need help choosing the correct battery

  1. #1
    Senior Member
    Join Date
    Nov 2016
    Posts
    182

    Need help choosing the correct battery

    Hi

    I need to choose a battery for my Teensy3.6-Waeable-Project.

    Here is some criteria that it needs to have:

    1) as small as possible
    2) long duration and much power
    2) need to be re-chargeable

    .. nice to have would be

    3) waterproof

    .. as it comes to "2) long duration and much power" .. I can say thay I need to power

    - one T 3.6
    - up to three small OLED-Screens (maybe like those here: https://www.mouser.de/ProductDetail/...SABEgJD1fD_BwE)
    - five WS2812-RGB-LEDs
    - a Co2-Sensor
    - a temperature-sensor
    - a hearbeat-sensor
    - maybe some more sensors

    I have found some batterys but I don't know which to choose, maybe has experience with those and could help me?

    .. I also think about simply connect a rechargeable 9V-Block.. but I also think about this guy here:
    https://www.conrad.de/de/p/raspberry...70211499!!!g!!

  2. #2
    Senior Member
    Join Date
    Apr 2013
    Posts
    1,910
    If you have nothing higher than give volts best option is probably a 5V battery bank. They will not be optimal but they come in many sizes/shapes and bypass challenges over getting all the parts to match together. If you have a sleep mode on the wearable the better designed ones will detect the low load and shut down, if this becomes a problem either find a cheaper version or program the code to very briefly blink the LEDs to reset the load monitoring.

  3. #3
    Senior Member
    Join Date
    Nov 2016
    Posts
    182
    Quote Originally Posted by GremlinWrangler View Post
    If you have nothing higher than give volts best option is probably a 5V battery bank. They will not be optimal but they come in many sizes/shapes and bypass challenges over getting all the parts to match together. If you have a sleep mode on the wearable the better designed ones will detect the low load and shut down, if this becomes a problem either find a cheaper version or program the code to very briefly blink the LEDs to reset the load monitoring.
    good point, thank you.

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