Battery Management System Reset

andrew.baker.142 · May 23, 2017

So I had two Solo batteries that I somewhat mistreated by leaving them fully charged in my trunk while traveling around (in warm weather) on vacation. When I got home it was another week before I tried to use them. I noticed that they would only charge to 85%, even after a couple of cycles. I figured I messed them up for good.
Deep inside one of the posts on this forum someone suggested plugging in the battery to the (stock) charger while holding the power button. I gave this a try and it worked beautifully!
So if anyone has a battery that just doesn't correctly report its capacity or charge state, try to reset the BMS by pressing the power button and holding it down for a couple seconds while plugging in the charger. Let us know if it works!

Pedals2Paddles · May 24, 2017

Whaaaaaaaaaaaaaaaaaaaaaaaaaaat!?

andrew.baker.142 · May 24, 2017

I'm just sharing my experience. Not sure why I was finally successful in getting my (2) Solo batteries to charge to 100%. Maybe there was a full moon that day...

jd2adams · Jun 6, 2017

I'm experiencing the same behavior. I need to research this more but, as I write this post, I currently have five Solo batteries indicating 80% on the leds but won't charge. I don't have thorough testing but I believe this happened after we started using a third party, multi-bay charger. I tried andrew's procedure but it did not work.

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Richard Nawara · Dec 4, 2017

SOLO Batteries...

andrew.baker.142 said:
So I had two Solo batteries that I somewhat mistreated by leaving them fully charged in my trunk while traveling around (in warm weather) on vacation. When I got home it was another week before I tried to use them. I noticed that they would only charge to 85%, even after a couple of cycles. I figured I messed them up for good.
Deep inside one of the posts on this forum someone suggested plugging in the battery to the (stock) charger while holding the power button. I gave this a try and it worked beautifully!
So if anyone has a battery that just doesn't correctly report its capacity or charge state, try to reset the BMS by pressing the power button and holding it down for a couple seconds while plugging in the charger. Let us know if it works!

I have 6 batteries and use with sitescan over a 10month period... Cannot reset the Batteries as above.. Any more tips?

Solo_Maverick · Dec 5, 2017

The search function is not working on my phone's app.
Anyway... there's a thread in this forum with a step-by-step procedure on how to reset and restore the batteries' smart controller.

Richard Nawara · Dec 5, 2017

Maverick - Thank you. I will try and search. But If you locate it please send thru. Ta

jimloss · Dec 5, 2017

Smart battery calibration procedure can be found here:
3DR Solo - Smart Battery Calibration — Copter documentation

I haven't had to use it, but it's supposed to help calibrate the battery as long as there isn't a bad cell. Solex has a feature in the Vehicle section to run the motors so that you can drain the battery.

Solo_Maverick · Dec 5, 2017

Take a look here also.

3DR Solo - Smart Battery Calibration — Copter documentation

Solo_Maverick · Dec 5, 2017

jimloss said:
Smart battery calibration procedure can be found here:
3DR Solo - Smart Battery Calibration — Copter documentation

I haven't had to use it, but it's supposed to help calibrate the battery as long as there isn't a bad cell. Solex has a feature in the Vehicle section to run the motors so that you can drain the battery.

I guess we posted the same thing. [emoji6]

Pedals2Paddles · Dec 5, 2017

The information in that is not completely accurate. The battery will NOT turn itself off at 12 volts, and will not turn itself off when any cell reaches 3 volts. The battery will continue to run down until it ceases to function and this will ruin the battery permanently. You need to be monitoring the 4 individual cell voltages and stop discharging when the lowest one is just shy of 3.0 volts.

Solo_Maverick · Dec 6, 2017

Pedals2Paddles said:
The information in that is not completely accurate. The battery will NOT turn itself off at 12 volts, and will not turn itself off when any cell reaches 3 volts. The battery will continue to run down until it ceases to function and this will ruin the battery permanently. You need to be monitoring the 4 individual cell voltages and stop discharging when the lowest one is just shy of 3.0 volts.

Ops... sorry for that.

Is there a recommended practice for what they are suggesting?

daniel s · Dec 7, 2017

andrew.baker.142 said:
So I had two Solo batteries that I somewhat mistreated by leaving them fully charged in my trunk while traveling around (in warm weather) on vacation. When I got home it was another week before I tried to use them. I noticed that they would only charge to 85%, even after a couple of cycles. I figured I messed them up for good.
Deep inside one of the posts on this forum someone suggested plugging in the battery to the (stock) charger while holding the power button. I gave this a try and it worked beautifully!
So if anyone has a battery that just doesn't correctly report its capacity or charge state, try to reset the BMS by pressing the power button and holding it down for a couple seconds while plugging in the charger. Let us know if it works!

yep...i tried holding power.button while plugging in...and it WORKS
E="andrew.baker.142, post: 108186, member: 7142"]So I had two Solo batteries that I somewhat mistreated by leaving them fully charged in my trunk while traveling around (in warm weather) on vacation. When I got home it was another week before I tried to use them. I noticed that they would only charge to 85%, even after a couple of cycles. I figured I messed them up for good.
Deep inside one of the posts on this forum someone suggested plugging in the battery to the (stock) charger while holding the power button. I gave this a try and it worked beautifully!
So if anyone has a battery that just doesn't correctly report its capacity or charge state, try to reset the BMS by pressing the power button and holding it down for a couple seconds while plugging in the charger. Let us know if it works![/QUOTE]
I

andrew.baker.142 said:
So I had two Solo batteries that I somewhat mistreated by leaving them fully charged in my trunk while traveling around (in warm weather) on vacation. When I got home it was another week before I tried to use them. I noticed that they would only charge to 85%, even after a couple of cycles. I figured I messed them up for good.
Deep inside one of the posts on this forum someone suggested plugging in the battery to the (stock) charger while holding the power button. I gave this a try and it worked beautifully!
So if anyone has a battery that just doesn't correctly report its capacity or charge state, try to reset the BMS by pressing the power button and holding it down for a couple seconds while plugging in the charger. Let us know if it works!

Yep .

daniel s · Dec 7, 2017

I was only getting 90% after a full charge. Then I tried holding power button down while plugging battery in...and wow...now 99% after full charge...this fourum is great