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› Balance problems
07-24-2017 01:24 PM  11 months agoPost 1
PaulBowen

rrKey Veteran

Victoria, Australia.

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Hello

I have a continuing issue with my battery charging which is causing a lot of frustration. When I charge my batteries I have to fiddle endlessly with the balance leads to get a minimal voltage split between cells. Its as if the balance lead plugs and sockets are very sensitive in positioning to avoid bad connections. Sometimes I get a battery error and have to start charging again once I have moved the balance leads around to find the sweet spot. My charger is a Hyperion 720i Duo and this has always been an issue to varying levels. It drives me nuts.

Does anyone else have this issue? This is a major factor putting me off electric helicopters as it requires too much constant attention and fiddling.

Futaba T18SZ, JR Propo XG14, Hirobo fanatic!

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07-24-2017 01:52 PM  11 months agoPost 2
JuanRodriguez

rrProfessor

The Villages, Florida

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Do you have a buddy you can borrow different balance leads so that you can try to pinpoint the issue ?? (bad leads or bad charger)

Been there, done that and old enough to know better.....

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07-24-2017 02:04 PM  11 months agoPost 3
Flyin for Jesus

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Troy, IL. 62294

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Do you have a buddy you can borrow different balance leads so that you can try to pinpoint the issue ?? (bad leads or bad charger)
This is a good idea.

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07-24-2017 03:35 PM  11 months agoPost 4
EEngineer

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TX

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Check the balance connector housings.....the pins/receptacles could be bent or slipping when plugging them together.

Logo 600SXs, 800XX, TDR IIs

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07-24-2017 03:47 PM  11 months agoPost 5
PaulBowen

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Victoria, Australia.

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Unfortunately I don't know anyone with the same equipment.

I will have a deeper look at the plugs. I'm not sure of the solution short of replacing them. The Hyperion balance leads are unfortunately made out of very stiff wire.

Does this happen to anyone else?

Futaba T18SZ, JR Propo XG14, Hirobo fanatic!

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07-24-2017 04:29 PM  11 months agoPost 6
EEngineer

rrProfessor

TX

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I have had similar issues, Paul.

Always ended up being the balance connectors.

Have bought some b-c's that were just wired up wrong, but that is not your issue....since yours have worked.

From a strictly engineering pov, these connectors aren't really made for being connected/disconnected many, many times....

The pins can get bent...the pin receptacles can be "widened" and lose their "grip"....

If you have a jeweler's screwdriver set(or similar), you can take the pins/receptacles out and inspect them under magnification....re-bend a pin..."pinch" a receptacle....etc.

Even on the battery connector(be careful here...because it's "hot" with voltage).

It's a pain to do....but it's work checking.

Logo 600SXs, 800XX, TDR IIs

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07-24-2017 04:56 PM  11 months agoPost 7
Rojoalfa

rrVeteran

Punta de Mata, Monagas-Venezuela

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/
/

I have a hyperion 720i with same issues with balance connectors.

1. Try with another connector brand.
Hyperion connector get loose form time to time due to temperature changes and bad connector. The connector remained open after you disconnect from socket pins. Very bad issue.

2. If you don't change balance connector, try with tunning grease dielectric on socket pins of 720i.
It works with me.

3. Another chance is to Pull out every connector from balance connector and carefully with a plier, try to close each throat.
Reinstall, connect to socket pins and leave it as it. Don't pull out anymore.

/

Saludos cordiales,

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07-24-2017 09:36 PM  11 months agoPost 8
EEngineer

rrProfessor

TX

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Dielectric grease might help....for a while...

Logo 600SXs, 800XX, TDR IIs

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07-24-2017 11:27 PM  11 months agoPost 9
ICUR1-2

rrElite Veteran

Ottawa, Ontario

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I use 2 LBA10 Hyperion external balancers for charging and an Astro "Blinky" while they wait.

My Turnigy Mega 200 Watt x2 has poor balancing but this combination gets the job done. My biggest battery is a 6s3000 40c

never had a problem with balancing connectors yet those are pretty good usually.

spending time, paying attention

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07-25-2017 12:36 AM  11 months agoPost 10
EEngineer

rrProfessor

TX

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"never had a problem with balancing connectors "

knock on wood....

Logo 600SXs, 800XX, TDR IIs

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07-25-2017 12:44 AM  11 months agoPost 11
JuanRodriguez

rrProfessor

The Villages, Florida

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"There's never a problem until there's a problem " !

Been there, done that and old enough to know better.....

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07-25-2017 01:48 AM  11 months agoPost 12
Ace Dude

rrProfessor

USA

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Dirty contacts can lead to all sorts of problems. First thing you should do is clean them thoroughly using a contact cleaner such as Deox-It.

  

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07-25-2017 03:17 AM  11 months agoPost 13
PaulBowen

rrKey Veteran

Victoria, Australia.

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I did the plier squeeze on the individual plugs with some success. The Hyperion leads are ver stiff which puts angular force on them even at rest. I was disappointed to see how basic the actual individual plugs actually are.

There must be a better way.

Futaba T18SZ, JR Propo XG14, Hirobo fanatic!

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07-25-2017 04:05 AM  11 months agoPost 14
EEngineer

rrProfessor

TX

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Could you post a pic?

Logo 600SXs, 800XX, TDR IIs

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