Welcome to PhantomPilots.com

Sign up for a weekly email of the latest drone news & information

BC20-4 Stock P1/FC40 balance charger flashing "Hey, I'm broken"

Discussion in 'Phantom 1 Help' started by IflyinWY, Jun 14, 2015.

  1. IflyinWY

    Sep 12, 2014
    Likes Received:
    Where the deer and the antelope play
    So, today I went flying, surprise, surprise.
    Came home and plugged in my chargers one at a time on the power strip, confirmed LiPo and 1 Amp selected, as usual.
    The leads to the XT60 connector haven't been unplugged from the charger in months, so I know I did not cross them.
    I got good test lights and normal ready to charge lights. Reached in my bag and grabbed some batteries.

    1st up was one of my Turnigy MultiStar 4000 mAh batteries and I plugged in the XT60 from the charger.
    :rolleyes: Here's where things are a bit grey in my knoggin. :rolleyes:
    I seem to remember, MAYBE, having issues with the balance plug. I wasn't trying to plug it in upside-down, or in the wrong receptacle. I may have plugged and un-plugged and plugged it in quickly, or I just don't know what the heck I did. I just remember things didn't happen as usual, but I got good lights.

    Connected the other 2 chargers to batteries, got normal lights, and walked away.

    About an hour later I check and I get this, not my video but same **** thing.

    If you must know, the video is from one of our members from back in 2013. He never got a hit on his thread till today. Here's the thread: http://www.phantompilots.com/threads/bc20-4-balance-charger-flashing-lights-is-this-normal.1807/

    So, I start searching and find this video which shows lights flashing just like mine. The guy says I blew my charger by crossing the leads, which I did NOT. So, I'm thinking I know how to blow stuff up without having to do it like the guy before me. :D I watch the video, open my charger and find it's different from the guy's in the video... :(

    The problem is, I don't have that "safety strip" he has, and there is no visible damage.

    My charger is a BC20-4, V-1.0. It was just as warm as the other 2 chargers. Yep, I feel how much heat is being produced.
    The battery is a 9 month old Turnigy, MultiStar 4000. After removing the battery from the charger the cells read: 11.6 volts, C1 3.85, C2 3.88, C3 3.86. The battery was not warm or any more swollen than the day it arrived.

    So here's the question:
    Is it the charger, or is it the battery? It sounds like it's the charger, but both are parked until I figure out what the heck is going on.

    Thanks folks.
Similar Threads - BC20 Stock FC40 Forum Date
BC20-4 settings for stock Phantom battery General Discussion Oct 17, 2013
BC20-4: First charge, not what I read about charge light. Phantom 1 Help Dec 2, 2015
BC20-4 (DJI) charger vs the Thunder AC680 Phantom FC40 Discussion Sep 11, 2014
BC20-4 Balance Charger Flashing Lights - Is this normal? Phantom 1 Help Aug 2, 2013
7.85 High Brightness in stock CrystalSky Monitors Wednesday at 8:05 AM