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Jan 26, 2017, 01:17 PM
Flown there, crashed that.
E.N.'s Avatar
I'm working towards a complete solution that integrates with inventory control and other aspects surrounding the batteries and maintenance scheduling. Basically, I need a system with four charge ports that can maintain say 12 - 16 large capacity batteries and keep track of all of their health and cycle history. Also want to collate the battery information automatically into the aircraft flight logs and info. Really don't want to have to manually move the information around.

I don't need fine control over the charging parameters, just basic parameters and start/stop, as well as all the discharge/charge curve data and which battery is connected.
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Jan 26, 2017, 08:40 PM
Registered User
Quote:
Originally Posted by E.N.
I'm working towards a complete solution that integrates with inventory control and other aspects surrounding the batteries and maintenance scheduling. Basically, I need a system with four charge ports that can maintain say 12 - 16 large capacity batteries and keep track of all of their health and cycle history. Also want to collate the battery information automatically into the aircraft flight logs and info. Really don't want to have to manually move the information around.

I don't need fine control over the charging parameters, just basic parameters and start/stop, as well as all the discharge/charge curve data and which battery is connected.
We've had Bump feature requests for many of the same features, so it may align pretty well moving forward.

For example, supporting APIs for allowing other 3rd-party applications to access battery history data in a *live* manner - directly from the app or a cloud storage source, not import/export/copy of history files. This would allow flight controllers that are capable of reading the BumpTag cycle# (like Jeti integration) to be able to automatically record the battery and cycle# just prior to that flight.

Another item on our todo list is a "simplified" Bump/app UI options - the idea is to remove most of the detailed/complex data and present a much less imposing UI for "operator" folks who only know how to charge a pack, not analyze it in any way, so no need to show all of that detail - somebody else will look at those details in the Battery History to keep track of battery health.

What you're proposing is a large undertaking .... are you wanting to build this specifically to support your business, or looking to create a new product like this that you offer to others ?

If you want to share, feel free to PM me with more information and I'll comment further about relevant ideas we're kicking around for the future.
Jan 26, 2017, 10:13 PM
Flown there, crashed that.
E.N.'s Avatar
Thanks, pm sent.
Apr 26, 2017, 05:56 PM
Registered User

Storage setting(s)


Hello,

I'm a new user of the DPL, so this may be just user error. When discharging for storage, my charger stops when cells hit 3.90v. This is odd to me, because I set the discharge voltage target at 3.83v.

I might be making my own problem by not having a preset for discharging. I'm using a preset for charging (which has discharge target set to 3.83v), and I'm temporarily changing that preset to run:
- No cycles
- Discharge only
- End on discharge
- And then I run it as Discharge on the final menu

Maybe 3.93v is a better storage level, but I've always drawn my lipos down to 3.80'ish. And, I really want to know why my setting isn't giving me my expected result!

Any insight is appreciated! Thanks!

T.P.
Apr 26, 2017, 06:04 PM
3D? I only got two thumbs!
One of the default presets is a storage charge preset that does exactly what you want.
Apr 26, 2017, 06:10 PM
Registered User
ggcrandall1's Avatar
Quote:
Originally Posted by Time Portal
Hello,

I'm a new user of the DPL, so this may be just user error. When discharging for storage, my charger stops when cells hit 3.90v. This is odd to me, because I set the discharge voltage target at 3.83v.

I might be making my own problem by not having a preset for discharging. I'm using a preset for charging (which has discharge target set to 3.83v), and I'm temporarily changing that preset to run:
- No cycles
- Discharge only
- End on discharge
- And then I run it as Discharge on the final menu

Maybe 3.93v is a better storage level, but I've always drawn my lipos down to 3.80'ish. And, I really want to know why my setting isn't giving me my expected result!

Any insight is appreciated! Thanks!

T.P.
Depending of the rate of discharge a LiPo battery will rebound back up several tenths when the discharge completes. The higher the discharge rate the higher up the rebound will be. This could explain your results. Although .7V is a bit high.

The next time you do a discharge watch the voltages as you reach end of discharge to verify that the discharge does go to 3.83V. Also if you have the Charge Control Software, CCS, you could enable the graphing and record the cell voltages.

Glen
Apr 26, 2017, 06:15 PM
Registered User
Quote:
Originally Posted by ggcrandall1
Depending of the rate of discharge a LiPo battery will rebound back up several tenths when the discharge completes. The higher the discharge rate the higher up the rebound will be. This could explain your results. Although .7V is a bit high.

The next time you do a discharge watch the voltages as you reach end of discharge to verify that the discharge does go to 3.83V. Also if you have the Charge Control Software, CCS, you could enable the graphing and record the cell voltages.

Glen
In fact I did just that, and the cells get down to 3.90v, not much below (maybe one cell went to 3.89), and then poof it stops. Maybe I need to graph if I can't figure this out...

Quote:
Originally Posted by AeroKen
One of the default presets is a storage charge preset that does exactly what you want.
... and that's exactly what I'll do then. There's got to be a setting in the charging presets that's messing me up.

Thanks guys!
Apr 26, 2017, 07:28 PM
Electric baptism 1975
DavidN's Avatar
Are you measuring the voltage immediately, or after an hour or so? The voltage will rebound a bit, especially if you charge up to 3.90v it could drop down a few 100ths probably more as your battery ages.
Apr 30, 2017, 12:36 AM
Registered User
The rebound is only a few hundredths, so I was doing something wrong. I tried using the discharge library preset, and it worked like a charm!

Now working on a nice charging case.

Thanks everyone!

T.P.


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