Core Electronics Forum

PiJUice settings for 1x 3-Pin LiPo Battery For PiJuice 10000mAh

Hello

I ordered 1x 3-Pin LiPo Battery For PiJuice 10000mAh to add rto my PiJuice but I am not sure of what settings to add to the PiJuice GUI.

I have the steup blogged here HomePi - Raspberry PI powered touch screen showing information from house-wide sensors (fearby.com)strong text

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I cannot see PiJuice settings anywhere or here PiJuice/Documentation/Battery Safety at master · PiSupply/PiJuice · GitHub

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3-pin LiPo Battery for PiJuice 10000mAh Australia (core-electronics.com.au) says * View this guide on how to setup & connect your PiJuice battery

This page How to Setup & Connect your PiJuice battery • Pi Supply Maker Zone (pi-supply.com) has no 10,000mAh battery listed

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Hi FearTec,

I’ve tried to find more specs from the manufacturer but unfortunately, I’ve had no luck.

I think the best resolution for this would be to grab the specs from the 12,000mah and the 5000mah lipos and interpolate the two, to get a rough estimate of some values. Try these settings and carefully watch your lipo the first time it is charging for overheating, just to be extra safe. The lipo is monitored for raised temperature already so it should cut off in the case of overheating.

We will contact the manufacturer again to try and get some solid specs but unfortunately there is no guarantee of when or if they will reply.

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Matt

So it this compatible with PiJuice or not? Can I have the confirmed settings or a refund please?

Page: 3-pin LiPo Battery for PiJuice 10000mAh Australia (core-electronics.com.au)

I see you added " product alert: Note - this is a generic LiPo battery that is compatible with PiJuice by using a custom profile in the PiJuice configuration software. The standard PiJuice battery profiles may not work as intended with this battery."

I am not happy that this is now a generic battery with a product alert and I am on my own :frowning:

Matt

What settings do you suggest for 12,000mah and the 5000mah battery?

Hey FearTec,

Thanks for posting on the forum! Sorry about the delay in getting back to you, it’s been quite busy here at Core Electronics today.

Yes, you can use it with the PiJuice, all of the generic battery brands that are supplied here use the same kind of NTC (thermistor) as the PiJuice cells themselves to my knowledge, and typically when I set them up I put together a custom profile based on how much load my Pi will draw when idle and the batteries specs.

We offer generic cells as well as the original PiJuice batteries here as it provides customers more choice over the capacities that they want to use, as well as getting to use less expensive cells as an option.

We’ve had a few discussions about these batteries before:

Personally, I’d suggest following the 1000mAh profile, and then creating a custom profile below by changing the following settings:

Capactity: 10000mAh (or matching your cell)

Charge Current: ~1000mA (this is due to the type of wiring connected to the battery rather than the battery itself, with a 10000mAh cell with some thicker wiring you can usually get away with charging at higher current, usually around 0.5-0.6C if you want to ensure you have a decent battery lifespan)

Everything else can remain the same, as the type of NTC being used and both the cutoff voltage and max temps should all be quite similar between cells so those values will work nicely. If you have any other questions please let us know. And feel free to shoot through an email if you’d like to organize any returns/refunds, this is a forum designed for discussion about projects and product use/applications for order administration we use our support address. Enjoy the rest of your day!

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Do you have a complete set of values to get this workign in the PiJuice?

Values for Charge Current, Termination Current, Regulation Voltage, Cutoff Voltage, Cold Temperatice, Cool Temperature, Warm Temperaturem, Hot Temperature, NTC B Constant, NTC Resistance (ohm), OCV10 mv, OCV50 mv, OCV90 mv, R10 mOhm R50 mOhm, etc

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Did you mean “1000mAh”?

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Hey FearTech,

Yes, basically everything remains the same with these two cells with very slight differences in profile.

Yes, I did, all of the values except for Capacity and Charge Current can remain the same with the variants of cells that we supply. So the Termination Current, Regulation Voltage, Cutoff Voltage, Cold Temperatice, Cool Temperature, Warm Temperature, Hot Temperature, NTC B Constant, NTC Resistance (ohm), OCV10 mv, OCV50 mv, OCV90 mv, R10 mOhm R50 mOhm will all match or can generally be left the same as the 1000mAh profile which you originally linked. For basically all our 1S LiPo such as these ones they have the same type of thermistor and the cutoff voltage for the 3.7V LiPo should still be around 3V (3000mV although personally, I like to cut a little earlier at around the 3200-3250mV range to extend the battery lifecycle as you don’t want to run these cells on low voltage for an extended period of time):

Hope this helps! Let us know if you have any further questions :grin:

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Thanks, I have connected the battery, booted the pi then changed the settings. I think I selected the BP7X profile then checked custom. I’ll change later after the battery charges.

The issue now is my pi juice detection of the pi is shutting down the pi as low voltage us detected.

Panic is off, thanks for your help



I zipped tied down the cables and hot glued for safety.

Thanks

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Update all is good, the battery charged, stayed nice and cool.

I will add advice and backlinks to core (to purchase) here https://fearby.com/article/homepi-raspberry-pi-powered-touch-screen-showing-information-from-house-wide-sensors/

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Hi FearTec,

Great to hear you got it up and running :slight_smile:

You’ll have to keep us posted on your project!

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Will do.

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I just logged in and ensured that settings were based off the 1,000 battery profile. I lowered the charge current a bit (as the battery wire’s seem small and the battery may last longer if the current tis lower?).

This is my final settings with this battery

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Update, my API is up https://fearby.com/article/homepi-raspberry-pi-powered-touch-screen-showing-information-from-house-wide-sensors/

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You’re really making some quick progress! Not too far off having all the core functionality done.

Do you have a GitHub repository for your code?

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Yes, the battery wires are only rated at 1A so lowering the charge current a bit is a good idea.

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I agree, you really don’t want them to get hot as that’s a pretty serious fire risk, and LiPo fires can be quite dangerous for several reasons:

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