Battery charging and safety,timer

Discussion in 'MōVI M5' started by David Cooper, Jun 23, 2014.

  1. David Cooper

    David Cooper Member

    Joined:
    Mar 22, 2014
    Messages:
    30
    Likes Received:
    4
    Being new to LiPo batteries, wondering if there is a simple timer use to plug in the charger and have it turn off in an hour. I have already left it for half a day charging and have heard you really need to be careful with these batteries if unattended.
     
  2. Jason Comparetto

    Jason Comparetto Active Member

    Joined:
    Sep 23, 2013
    Messages:
    269
    Likes Received:
    38
    That's a great idea David. If the hazards of charging these batteries is true, then why isn't there a charger with a timer built into it?
     
  3. Gary Haynes

    Gary Haynes Administrator
    Staff Member

    Joined:
    Jul 6, 2012
    Messages:
    5,211
    Likes Received:
    460
    Which charger? If it is the FF charger it will ramp down with a full charge. A household lamp timer would work if you want it to completely disconnect.
     
  4. Andy Johnson-Laird

    Andy Johnson-Laird Administrator
    Staff Member

    Joined:
    Jul 31, 2012
    Messages:
    10,371
    Likes Received:
    1,162
    The Hyperion Superduo chargers have the option to set a maximum charge time -- I think the default is two hours.

    Andy.
     
  5. Janne Hoglund

    Janne Hoglund Member

    Joined:
    Oct 4, 2012
    Messages:
    364
    Likes Received:
    23
    Most other Lipo-chargers have sound alarm, I cant understand why Tabb choose to use one without it?
    Love the M5 but not the charger ;-/
     
  6. Mike Duval

    Mike Duval Member

    Joined:
    Apr 24, 2013
    Messages:
    66
    Likes Received:
    18
    Here is a good video about LiPo charging and safety. The sand trick is particularly impressive for squelching LiPo fires.
     
  7. Andy Johnson-Laird

    Andy Johnson-Laird Administrator
    Staff Member

    Joined:
    Jul 31, 2012
    Messages:
    10,371
    Likes Received:
    1,162
    WARNING: If you use an Ammo box for LiPo storage and it's airtight (as many of them are), and you have a LiPo fire, you now have a LiPo *bomb* -- the gasses given off by the burning LiPo cannot escape an Ammo box unless you drill a pressure relief hole. It will explode.

    I drill a 3/8" hole in the lid and put PVC electrician's tape on the inside and the outside of the hole so it does not present any edges. In case of a LiPo fire, the tape will just blow out and relieve the pressure.

    Why would a LiPo just lying innocently in an Ammo case ignite? Oh....perhaps if you drop the Ammo case on to concrete.....

    Andy.
     
  8. Martin Lebel

    Martin Lebel New Member

    Joined:
    Mar 1, 2015
    Messages:
    3
    Likes Received:
    0
    If I have a M15 and travelling with 10 lipo bat. how i could drop down the lipo bat. to the recommended 3.8 volt for travel. and how I could prevent to go under 3 volts on the rig when we are shooting.
     
  9. Martin Lebel

    Martin Lebel New Member

    Joined:
    Mar 1, 2015
    Messages:
    3
    Likes Received:
    0
    Just to make shure with the freefly charger we don't need a timer to stop the charging because the freefly charger have a auto turn off when the battery is full.
     
  10. Martin Lebel

    Martin Lebel New Member

    Joined:
    Mar 1, 2015
    Messages:
    3
    Likes Received:
    0
    or i should buy a timer to be more safe
     

Share This Page