RunRyder RC
WATCH
 1 page 1131 views Post Reply
HomeRC & Power✈️Aircraft🚁Helicoptere-Electric Battery-Charger-pSupply › Powerlab 8 - how much is this gonna cost
07-28-2012 05:05 AM  8 years ago
Topic Vote0Post 1
rcflyerheli

rrKey Veteran

Granbury, TX USA

MyPosts All Forum Topic
Powerlab 8 - how much is this gonna cost
Lesson learned tonite, never take anything for granted. I never thought this would happen to me, but it has, so now I need to get some idea of how bad I screwed up - costwise.

I run bullet plugs on my Trex 600, with a connector to use a Deans plug for charging. I have always been really careful when connecting the adaptor to the bullets to not get them backwards --- until tonite.

Long story short, I tried to hook that pack to my PL balance board, needless to say all kind of sparks flew. I actually never got the main leads plugged in, but I did plug in the balance adaptor before I tried to plug in the main connector.

After the sparks, I sorted everything back out, and tried to plug in a pack. Now, as soon as any pack is connected to the balance board, the thermal strips turn black, no matter which port I plug into. I have checked all the wiring, and can't see any shorts. I don't think the balance adaptors themselves are bad, as they are working fine in my two Hyperion chargers, so it must either be something in the parallel board, or in the charger itself.

Being Friday night, I guess I'm gonna have to go back to just the Hyperions until I get this straightened out. I take it there are no reverse polarity protections on the parallel board, although I have gone through the manual twice, and can find no cautions or warnings regarding reverse polarity on hooking the packs up. I know common sense says don't do it, but there ought to be some kind of caution if it is gonna fry something.

Anyway, I can't be the first person who has ever done this (but one never knows), but I hope someone can give me some idea what I am facing. One thing for sure, I learned what is gonna probably be an expensive lesson.

Just re-read the advertisement for the MPA board, and they indicate that it does have reverse polarity fuses. I looked at my board, and none of the fuses are burned or blown. What would that mean?

Thanks for any ideas.
Logo 700, Specter 700, Goblin 700, Trex 700DFC, Gaui X7, Logo 690SX, Logo 600SX; Trex 470 Trex 500
Amain Team Rep
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
07-28-2012 06:56 AM  8 years ago
Gregor99

rrElite Veteran

Western Wa

MyPosts All Forum Topic
Long story short, I tried to hook that pack to my PL balance board, needless to say all kind of sparks flew. I actually never got the main leads plugged in, but I did plug in the balance adaptor before I tried to plug in the main connector.
Not tracking with you. What wires sparked if you didn't get the main leads connected? From the description, I cannot tell what which mistake you made.
Anyway, I can't be the first person who has ever done this
Once we can determine exactly you have done, it may be possible to answer this. But, I can tell you for personal experience that the Powerlab8 has reverse polarity protection on the main leads and the balance connectors.
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
07-28-2012 07:10 AM  8 years ago
rcflyerheli

rrKey Veteran

Granbury, TX USA

MyPosts All Forum Topic
What I meant to say was that when I tried to plug in the second pack (the one with the reversed polarity) I got the sparks as the Deans made the touch connection. I didn't actually get the plug plugged into each other.

The first pack, correctly polarized was already plugged into the balance board with both the balance tab and the main plug connected. The incorrectly polarized plug had the balance adaptor plugged into the board, and it was when I tried to connect the main leads that I got the sparks.

Again, I looked at the main fuses, and none of them were blown. I removed the two boards and looked at them. If anything shorted out, it is inside the epoxy boards, as I can't see anything on the surface of either board.
Logo 700, Specter 700, Goblin 700, Trex 700DFC, Gaui X7, Logo 690SX, Logo 600SX; Trex 470 Trex 500
Amain Team Rep
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
07-28-2012 04:25 PM  8 years ago
Gregor99

rrElite Veteran

Western Wa

MyPosts All Forum Topic
OK, that makes a little more sense. Its most likely that one of the fuses was blown. Visually you cannot always see this. May need to check with a multi-meter. Using the continuity test mode (Ohms), connect one end of the DVM to the positive wire on the MPA. Then touch each of the positive pins on the Deans connectors attached to the MPA. Repeat with the negative lead.

The fuses changing color could be because a difference in pack voltage between the packs connected. They are not meant to allow a lot of current and could trip if the pack are in greatly different states of charge. Normally big differences in pack voltage equalize quickly through the main leads. If a fuse is blown, that part is not happening.

Before you connect the packs back to the board, use a DVM or reliable cell checker to verify the packs are close in voltage. one or more cell may be much lower due to the power discharged in the spark.
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
08-03-2012 03:50 AM  8 years ago
rcflyerheli

rrKey Veteran

Granbury, TX USA

MyPosts All Forum Topic
Per Howard at Revco, I unplugged the MPA from the PL8. Plugged a pack into the MPA, and got no heating of the fuses. So the problem doesn't reside in the MPA. Howard thinks a blown diode or something. I will send it back to Revco soon.

If it wasn't for bad luck. Just after this dumb stunt, was running a couple packs on storage mode with my Hyperion 615 duo3 and it smoked itself. I'm down to one last charger. Something else happens, I'm out of the heli hobby for a while till I get em all repaired.
Logo 700, Specter 700, Goblin 700, Trex 700DFC, Gaui X7, Logo 690SX, Logo 600SX; Trex 470 Trex 500
Amain Team Rep
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
WATCH
 1 page 1131 views Post Reply
HomeRC & Power✈️Aircraft🚁Helicoptere-Electric Battery-Charger-pSupply › Powerlab 8 - how much is this gonna cost
Print TOPIC

 2  Topic Subscribe

Thursday, April 15 - 4:03 am - Copyright © 2000-2021 RunRyder   EMAILEnable Cookies

Login Here
 New Subscriptions 
 Buddies Online