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Old Feb 28, 2012, 09:07 PM
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SeniorSpan's Avatar
Colorado
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Battery/Charger Anomaly

G'day all,

I believe I have a battery/charger anomaly. I have a Loong MAX E6 charger and a Pro Peak Prodigy II charger.
Both have worked flawlessly with two and three cell Lipos, ranging from 850ma to 2800 ma.
I recently purchased a 5000 ma 3 cell Lipo, the Pro Peak Prodigy II charger will charge it no problem, the Loong Max E6 will not charge it; shows "broken connection" in the display, but will charge every other 2 and 3 cell Lipo I have.

I've not seen this problem before using Lipos and there chargers. Really not sure what the next step should be to diagnose the problem.

Any suggestions would be appreciated.
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Old Feb 28, 2012, 09:14 PM
RC Helicopter Pilot
TheWoodCrafter's Avatar
United States, CA, Westminster
Joined Mar 2010
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I am not familiar with these chargers.
Does the one that doesn't work charge through the balance leads?

Does the pack balance charge O.K. on the other charger?
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Old Feb 28, 2012, 10:39 PM
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Colorado
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Thanks for the reply.

To be honest, I did not use the balance lead just the + and - leads. I only use the balance lead for charging every 3rd tine or so. I give it a go.

Thanks
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Old Feb 28, 2012, 11:37 PM
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USA, AZ, Gilbert
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What connector are you using on your new pack?

Rick
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Old Feb 29, 2012, 03:31 AM
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Letchworth, Great Britain (UK)
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If it works okay with other packs, and you're not using the balance leads, it's got to be something to do with the main connectors -- a flaw which, for some reason, makes that pack's connector unreliable when used in conjunction with the E6's connector. Have you flown the problem pack successfully?

I suppose another possibility is that the E6 is simply more sensitive to poor connections than the Prodigy, and the fault is a very minor one, perhaps in a solder joint, or even inside the pack.
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Old Feb 29, 2012, 09:51 AM
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Colorado
Joined Nov 2004
268 Posts
Thanks for the replies.

To answer the questions.

I'm using a Deans connector. The pack has not been flown yet. Got it for a Quad copter, but Colorado is having unusual winds for the last several days so have not had a good window to fly.

I put the new pack back on the E6 in balanced mode and got "Connection Break" again, so will re-solder the connector. The leads are "healthy" on this size pack, so may got to different connectors.

I really appreciate the inputs, thanks again.

Cheers

Bob
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Old Feb 29, 2012, 10:08 AM
Frankenstein recycled packs
rampman's Avatar
USA, AZ, Gilbert
Joined Jan 2006
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You confirmed my thoughts in post #4.
Replace, don't resolder, your Dean's on the pack. The open resides there and soldering it again will only worsen the intermittent connection.

Rick
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Old Feb 29, 2012, 11:35 AM
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Colorado
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Rick,

You are absolutely correct, re-soldering did not change a thing. The pack originally came with bullet connectors; one male and one female. All my electrics are Deans connectors, so I changed the bullets to Deans. As this new pack has AWG 8 leads I will have to hit my LHS for new connectors.

A report will follow.

Cheers

Bob
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Old Feb 29, 2012, 02:09 PM
Frankenstein recycled packs
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This is the exact reason I have switched my large and >3S packs to APP's. No biggie on the ground but in flight?

Rick
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Old Feb 29, 2012, 05:34 PM
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So. Cal.
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Quote:
Originally Posted by rampman View Post
This is the exact reason I have switched my large and >3S packs to APP's.
Don't say this too loudly Rick as it may cause a ruckus.

In fact, you might use really small font when declaring that you switched from Deans to APPs. This will aid in avoiding potential scorn.

Mark
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Old Feb 29, 2012, 06:10 PM
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Colorado
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My update as promised.

I really appreciate your inputs. Made a trip to the LHS and got some "shall remain nameless" female connectors that accommodated the 8 gauge battery leads. I also purchased corresponding male connectors to exit the new female battery connector to which I added short 4 inch leads going to a new female deans connector. Hope that makes some sense to all.
Of course I expected this to work on the Prodigy II charger and it did; I was 50/50 for the Loong Max E6, but to my surprise it worked. Just goes to prove attention to detail when soldering pays off in the long run.

As for connectors, I have found Deans connectors to be good up to a point. It's my humble opinion amps drawn or wire size, 8 gauge and up, tend to make one look at other resources.

Cheers

Bob
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Old Mar 01, 2012, 03:02 AM
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typeRA's Avatar
San Diego, CA
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Quote:
Originally Posted by SeniorSpan View Post
Made a trip to the LHS and got some "shall remain nameless" female connectors that accommodated the 8 gauge battery leads. I also purchased corresponding male connectors to exit the new female battery connector to which I added short 4 inch leads going to a new female deans connector. Hope that makes some sense to all.
The new connectors can't be APP because APP don't have male/female.

They probable aren't Deans Ultra because 8 AWG doesn't fit well and why make an adapter from Deans to Deans?

Maybe they are bullet connectors or EC5?
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