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Thread: HR-OS1 Battery check Low Voltage warning FIX

  1. HR-OS1 Battery check Low Voltage warning FIX

    Moderator note: Do NOT do this. This is how Lipo battery fires happen.

    I just got my HR-OS1 walking (for about 5 minutes total) and having not put on the little battery low voltage warning system, the beast started stooping lower and lower and finally stopped!
    So when I tried to follow the battery charging procedure carefully outlined here http://learn.trossenrobotics.com/ind...-battery-guide and when pressing the start button for 3 seconds, the charger gave me a LOW VOLTAGE warning.

    SO! This quiet https://www.youtube.com/watch?v=uchFUiXPdQU video suggested that we switch the battery type to NiMh and charge it for about 30-45 seconds at 2.0 A until the voltage got above 10V. Then I switched back to the LiPo Balanced charging at 2.2A (11.1V 3S) and the battery check worked!

    Hope this saves someone the half-hour I just wasted!

    Happy walking,
    Ed May
    Last edited by DresnerRobotics; 05-01-2015 at 07:36 PM.

  2. #2

    Re: HR-OS1 Battery check Low Voltage warning FIX

    edmay,

    You should never charge your battery with a any other protocol than the lipo one. Once the cells go too low, they can become unstable. We strongly discourage that you continue using the battery - force-charging lipo batteries can lead to unstable batteries. Unstable batteries are a fire risk which can damage your robot, charger, and more.

    If your battery shows any signs of expanding, please stop using it immediately. Again, I can't stress enough how much we do not condne this charging practice or using batteries that have been force-charged.

  3. #3

    Re: HR-OS1 Battery check Low Voltage warning FIX

    Hope this saves someone the half-hour I just wasted!
    You might save a half-hour, and you might lose a living room. Win some, lose some.

    Click image for larger version. 

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  4. #4
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    Re: HR-OS1 Battery check Low Voltage warning FIX

    Heya,

    Appreciate that you shared your experience here, however Lipo charging is something that should not be trifled with. I am locking this thread and posting a warning at the top, as this isn't something we want to condone users doing. Saving a $20~ battery is never worth risking a dangerous fire incident.

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