Welcome to PhantomPilots.com

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

Replacement controller battery

Discussion in 'Phantom 4K' started by Ixlr8, Mar 22, 2018.

  1. Ixlr8

    Joined:
    Nov 9, 2016
    Messages:
    76
    Likes Received:
    22
    Any body know of a good battery replacement for a P3 4k controller and were to find it?
    Mine is on it's way out.
    Thanks
     
  2. Just_nick

    Joined:
    Jan 29, 2018
    Messages:
    339
    Likes Received:
    196
    Buy a lipo battery that's the same voltage, cut a hole in the controller, stick pigtail out. Or, send to DJI for replacement.
     
    MotorCycle-Man likes this.
  3. MotorCycle-Man

    Joined:
    Sep 30, 2017
    Messages:
    802
    Likes Received:
    568
    Location:
    Kansas
    And hopefully l near the same milli amp. (ma)..Not slightly less....if any thing slightly more ! that determines how long it will last running the remote controller !
     
  4. Ken73

    Joined:
    Apr 30, 2016
    Messages:
    31
    Likes Received:
    10
    Location:
    Sealy, TX
    I've been looking, apparently the originals were two flat pack style lipo's (similar to what's in the AC battery packs) with a special balance charger circuit. I recently saw another photo on the forums here that showed what appeared to be a pair of 18650's shrink wrapped together - from the factory. I've seen a few YT videos showing replacing with a battery pack (2S) for something like an RC car, but requires a balance charger to properly charge. I did find a balance charger that looks like the factory one on Ebay for about $4, but I'm not sure if my RC has the flat packs or the two 18650's in it. (I haven't opened mine yet, waiting on the balance charger to get here.) Battery shows at 57% but never seems to drop - two solid and one blinking light. From what I understand, the battery in the RC was rated at 6000 mah so it could run for 6 hours without a charge so something about half that size would be fine (3000-3500 mah aftermarket.)

    Two 3000 mah 18650 batteries with a $4 balance charger should do fine and fit easily in the factory battery space.
     
    MotorCycle-Man likes this.
  5. MotorCycle-Man

    Joined:
    Sep 30, 2017
    Messages:
    802
    Likes Received:
    568
    Location:
    Kansas
    Ken...a fantastic post and i'm sure many more will benefit from this post then a very few.
     
  6. Ken73

    Joined:
    Apr 30, 2016
    Messages:
    31
    Likes Received:
    10
    Location:
    Sealy, TX
    Thanks! I'll probably post up what I do along with some pictures - but my controller has the dreaded "won't charge past 2 &1/2 lights" disease. I'm going to add the ARGTek antenna setup on it while I've got the controller open as well. Note though, that my setup is out of warranty - I wouldn't recommend doing this on an in-warranty RC.

    Here's the balance charger I bought off Ebay:

    NEW - 2S 2A Li-ion Battery 18650 Charger Protection Board PCM BMS Module - FAST! | eBay

    The whole idea is simply to split up the charging between the two cells so they charge the same, not at different rates. That way the whole "battery" is charged properly. This way, there's no need to poke holes in the RC case to add a balance port for the charger.
     
    MotorCycle-Man likes this.
  7. Chopstix Kid

    Joined:
    Apr 19, 2016
    Messages:
    294
    Likes Received:
    122
    I have one for a GL300C RC. I bought it on eBay thinking my battery was bad when in actuality it was the circuitboard in my controller. I have since fixed my RC and now have an extra battery. It reads 8.35v when fully charged. Yours for what I paid for it... $20 plus shipping.
     
    RunningWithScissors likes this.
  8. Chopstix Kid

    Joined:
    Apr 19, 2016
    Messages:
    294
    Likes Received:
    122
    And FYI, if you’re thinking you need a battery because you’re having a charging issue, it’s likely not the battery. I have discovered that the circuit board needs to be reflowed.
     
    RunningWithScissors likes this.
  9. Ken73

    Joined:
    Apr 30, 2016
    Messages:
    31
    Likes Received:
    10
    Location:
    Sealy, TX
    FYI I cracked my controller this evening - sure enough, it has the big pocket for a larger size battery, filled with foam and a pair of 18650's that have this charger circuit attached to them. Batteries measure 3.75v each - the charger outputs 17.36v at the plug, but is regulated on the RC board down to 8.36v - which is passed to the batteries. I unplugged and re-plugged them and now it seems to be charging right? I'm going to let it charge for a while and see what it does, put it back together. I can't see any bad solder joints on the charger board (then again, my eyesight isn't what it used to be.) At this point I might put it back together with the ARGTek antenna setup and be done with it.
     

    Attached Files:

    MotorCycle-Man likes this.
  10. MotorCycle-Man

    Joined:
    Sep 30, 2017
    Messages:
    802
    Likes Received:
    568
    Location:
    Kansas
    Great Job "Ken" !.......and like many others we all sure hope it really works great for you......Thanks for sharing this as i'm sure your post will lead the way for others to do it to theirs someday.....and count me as one of them.
     
  11. Chopstix Kid

    Joined:
    Apr 19, 2016
    Messages:
    294
    Likes Received:
    122
    The factory battery is a 2S1P with a PCB. If it is reading 8.3-8.4v then is is fully charged and should get all 4 lights and 99-100% in GO app. If not, you’ll need to reflow the RC board. You won’t be able to see any bad solder joints. They are usually Microfractures that cannot be seen.
     
  12. MotorCycle-Man

    Joined:
    Sep 30, 2017
    Messages:
    802
    Likes Received:
    568
    Location:
    Kansas
    However.......I'm sure dangers are involved in the re flow process of destroying a part or parts by excessive heat from solder iron....that procedure is delicate .and please don't do it Unless your willing to take the chance of damage to very tiny electronic parts ! (BIG SIGH) I hope it all works just fine the way it is.
     
    Chopstix Kid likes this.
  13. Ken73

    Joined:
    Apr 30, 2016
    Messages:
    31
    Likes Received:
    10
    Location:
    Sealy, TX
    Good news - I lucked out! I woke up to a fully charged controller this morning. Got the ARGTek installed as well so if the wind cooperates today (it's been extremely windy here lately) I'll take it out and see how it performs.
     
    MotorCycle-Man and Chopstix Kid like this.
  14. Chopstix Kid

    Joined:
    Apr 19, 2016
    Messages:
    294
    Likes Received:
    122
    Absolutely. It’s worth trying if you have the ability and your only recourse is to buy another remote anyhow. Reflowing during the manufacturing process is typically done at close to 400° so a 250° reflow repair Is relatively safe if done correctly. Real sticking point here is that we shouldn’t be experiencing these problems in the first place and DJI should be stepping up to the plate with a recall or warranty extension.
     
Loading...
Similar Threads - Replacement controller battery Forum Date
Remote controller battery replacement? Phantom 4 Pro Help Jul 1, 2018
P3 Controller Replacement Battery General Discussion Feb 13, 2018
Replacement battery for P3A controller? Pro/Adv Discussion Sep 11, 2017
Need Battery Replacement for P3 Standard Remote Controller Standard Jun 15, 2016
Professional Replacement battery for DJI P3 Pro Remote Controller Phantom 3 Help Jun 10, 2016