B6 mini - Fully discharging then recharging a LiIo battery - Unattended

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Zebretta
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B6 mini - Fully discharging then recharging a LiIo battery - Unattended

I have a SkyRC B6 mini and a few Accucell6 models (same thing)

Only NiMh and NiCd have “Cycle” options.

However, I occasionally want to do a discharge cycle on LiIo batts just to see what the capacity of the battery is.
But I want the B6 mini to automatically fully recharge the battery and not leave it fully discharged overnight.

The reason being I have a large stockpile of these batteries and want them to cycle automatically overnight unattended so
that in the morning I have the discharge capacity, and the battery is restored to full (or storage) charge.

Anyone found a hack to do this with LiIo batteries on a B6 minin / Accucell6 ?

Thanks

Edited by: Zebretta on 10/31/2021 - 23:34
Zebretta
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I “could” use the NiMh setting and just set the voltages to 4.15v max charge and 2.9v max discharge….I suppose

Can’t think of any reason that wouldn’t work as long as it cuts off at 2.9v and 4.15v

(For the benefit of anyone who comes along later with this question)

Zebretta
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Actually I’m about to program the B6mini/Accucell6 to do just that and cycle a LiIo battery and see how it goes.

Zebretta
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Annnnnnd……

It won’t work because …..

Only Lithium batteries have the ability to set charge and discharge maximums and minimums in the software.

Meanwhile, only NON Lithium batteries have a “Cycle” option in the software.

And of course, the NiMh and NiCd settings don’t allow a full charge voltage of 4.21

Zebretta
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So…..

Do you have a rig that will automatically charge then discharge, then recharge (fully or to storage) a multi cell Lithium battery unattended?
(18650 and similar cells not included, There are a number of chargers that will do this with those cells)

Sometimes I want to know what the capacity of a multi cell lithium battery is. But I don’t want to have to closely monitor the battery during the process.
For example if I do it at night I don’t want to fall asleep with it fully discharged.

Right now, I have to manually charge then manually discharge the pack, making sure to be on hand monitoring the pack as is reaches full discharge state.

I don’t know of any way to do this or any equipment capable of doing this unattended. Do you?

Surely there must be a hobby charger that will do this?

tatasal
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I have an iCharger 106B+ that I have not used for years and iirc, it has a charge-discharge or discharge-charge to full or storage. 3v to 4.2v,, up to ten cycles.

You can download and read the pdf manual:

https://www.icharger.co.nz/icharger-106b

Zebretta
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Nice find.

I just ordered an iCharger 206B+

Same unit…..a bit higher output capability

Thanks