SkyRC MC3000 possible major bug (1A trickle charging)

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Helo
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SkyRC MC3000 possible major bug (1A trickle charging)

So, played around with my new MC3000 this weekend and I seem to have discovered a pretty major flaw in the programming of the iOS app. Using the eneloop or NiMH “charge” program results in a trickle charge beginning exactly 5 minutes after completion of the program and of exactly the charge rate, despite having trickle explicitly set to “off”. Talk about cooking some eneloops.

Here’s my parameters:

And here’s the proof:

Edited by: Helo on 02/17/2020 - 21:49
msblf
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Did you ever find any other information on this? I had the same experience refreshing 4 2400mAh AAs. Configured in the iOS app, trickle charging disabled, but the batteries were given a 1.25A trickle charge at the completion of the refresh.

msblf
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I tested by creating other programs in the iOS app and could reproduce it reliably. When I create a program with the trickle charge set to off the MC3000 will start a trickle charge at the full charge rate (if I set the charge rate to 1.03, it trickles at 1.03) a few minutes after the program completes. It doesn’t take long for the batteries to start to sizzle. Not good!

I configured a similar program on the device and could not reproduce.

I sent SkyRC an e-mail and linked them to this thread.

Cheule
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This is pure conjecture, but from what I understand there are a lot of bugs that pop up if you control the charger from the iOS app. I have really only monitored my batteries from the iOS app, and set up charging programs on the unit itself. I’ve never noticed any bugs by setting up configuration on the unit.

If you read the Apple App Store ratings for the iOS app, there are one or two users that complain about bugs introduced by program set up with the iOS app, so I just always wrote that feature off. It’s a bummer the app is mediocre, because it could be such a killer reason to get this particular charger.

My zombie apocalypse trio: TorchLAB BOSS 35, Acebeam L35 and D18 SST-20 & W2 mix

msblf
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I e-mailed SkyRC and they replied explaining that reaching the restart voltage setting causes the normal charge current to be applied (I assume the T icon is just a side-effect of this stage).

I turned off the restart voltage setting and cannot reproduce.

The actual defect here seems to be that when you create a new Eneloop program in iOS the restart voltage is displayed as 1.35v, but when you save the program and return to edit it again the setting is actually 1.45v. 1.45v is reached within 5-10 minutes after charging stops if there is no trickle charge.

So the good news is the actual device seems to be behaving as configured. The iOS application does not represent the settings correctly.

d_t_a
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Thanks for sharing this information (although I don’t own an IOS device), and also configure programs on the MC3000 unit itself.

However, I do notice some different things when I configure using the PC (Windows) software to control the MC3000, some settings seem to have extended thresholds (not very sure). I remember that when configuring discharge test, on the MC3000 unit itself, I can only do a Discharge Test to as low as 2.50v (Cut-off voltage), but on the Windows software, I remember I could set Li-ion to discharge to as low as 2.00v (and have tested this program setting — it’s really able to discharge to 2.00v Cut-off voltage).

So it looks like the software can do some stuff that the unit may not allow…

sam_sam_sam
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Would anyone recommend this charger if so why

Soldering Slave

Cheule
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It’s the most advanced charger at the time I purchased it. There’s nothing you can’t program it to do.

My zombie apocalypse trio: TorchLAB BOSS 35, Acebeam L35 and D18 SST-20 & W2 mix