Powering Up Your Board From a Battery? You need to know this ...

[@shakingwater]

As an EE working in the industry. These video are so helpful thank you for the content.

[@pere_gt__stgtsport5467]

Thank you, great pace and detail and very clear explanation.

[@Christe4N]

Well explained, easy to follow and understand. And definitely useful and helpful. Thank you Robert and Alex!

[@kyleolson8977]

This channel is so practical and useful. Deep dives with experts who know the subject matter from actual work. I've found batteries frustrating; there are so many options but I don't know why I make any choice. I feel like I'm on better ground after watching this.

[@TheDutchGuyOnYT]

This is a nice subject, helping makers a lot making better and safer devices.

[@sXAPOLLls]

Hey Robert, find someone from EV or drone applications. Never saw someone properly design multiple battery management with inductive loads. How to make recuperation properly? How properly connect multiple batteries that may have a little bit different voltage? Depencding on EV/drone voltage goes 12-60v 10-200A, want to see some basics about it.

[@RobertFeranec]

If someone has any tip for a specific person for the video, let me know (send me message on linked in)

[@serhiifediakov8171]

If BMS will cutt off power during fly drone will drop down and damage itself, that's the reason

[@serhiifediakov8171]

@@sXAPOLLls battery cell will not short by itself, if there would be shortcut it would be by electric components side so yes, bms in drone is useless. Maximum what it can need is cell balancer and S voltmeter to let know when cutoff charger and report battery issue

[@leinadshAlpha]

Great video! I've just finished meddling with battery protection circuit in one project. I've found that with one simple change to standard IC you can protect your circuit from reverse polarity. By placing a diode between the IC ground and the battery ground -you prevent damage to your circuit by blocking the reverse voltage.

[@Prashant5479]

Thank you Alex and Robert! Very informative video about using rechargeable lithium batteries in projects 👏

[@NivAviram]

Thank you very much Robert and Alex, this video was so interesting and helpful ! Im going to follow Alex to learn more

[@xDR1TeK]

Brilliant work. Batteries are always a wonderful topic.

[@mumbaiverve2307]

Please consider doing a follow up on charging battery banks, like 2S 2P battery banks for example.

[@serhiifediakov8171]

Thank you Robert for the video, it's always interesting to see how someone else solves problems same to yours, but I was surprised that you didn't dived deeply into the hardware building, decomposition of analog and digital solutions of separated BMS elements, heat dissapation, high current nets tracing etc 😢 Buy the way do you planning make some interviews about basic radio building, i watched your interview with cute lady about antennas, but that's a little bit different topic

[@GiorgiAptsiauriX]

I will post videos about radio transmitter and receiver soon - 1-2 months. Tx PCB already ordered - to be tested soon.

[@yjweaver5108]

Definitely would be nice to get an overview of usb C charging and delivery concepts, with some sample circuits and chip sets commonly used.

[@andreydoichinov1683]

Great video, thank you both of you

[@ravitejaj473]

Great full current frequency buffer & thermistor also nice thanks very much.

[@mumbaiverve2307]

Thanks a lot for your superb content ! A relatively "consumerish" question ... Since a battery is specified in terms of its charge / discharge cycles, suppose we keep the appliance (eg. laptop) powered continuously by the charger, would it prolong the battery life. I assume that a laptop would draw power from the charger and not from the battery, hence seldom discharging the battery.

[@RestInSleazZze]

Hi Robert, love your channel. Thank you and Alex for providing us that clear explained content about batteries. What i missed a little was how to deal with stacked packs like a 4s7p or something like that? What is with cell balancing? Do i need it for every single cell? Or just per each node where the voltage equals?

[@gsuberland]

This was extremely good!

[@MrAshrot]

Awesome! learnt a lot from this!

[@dorquemadagaming3938]

Is there a way for a common person to tell if a battery is damaged and is going to burst and cause a fire in a next few days or weeks, save for obvious swelling? A have a few old devices with Li-ion batteries lying around without use - are they becoming dangerous over time?

[@eetengineer]

Batteries normally only become hazards of they are abused. Ex: temp, current, discharge level. Aside from swelling, there isn't a good way to visibly asses the state of a battery. You can use a DMM to check the cell voltages. If a cell is really low or 0V, it would be better to properly dispose of it, especially if it is more then a few years old.

[@oskimac]

Great content. really really interesting . glad to find you guys

[@Friendroid]

When using one single 18650 battery to power an esp32 project at 3.3V through an HT7833 LDO, how should input and output capacitors?

[@ahbushnell1]

Good presentation

[@zyghom]

another gem/pearl! thank you

[@makerboy-gp2to]

i just encountered a new problem with battery powered designs. when the battery is first inserted, the battery holder springs create a series of loose contact phenomenon (similar to a switch debounce). The protection IC doesn't immediately see the battery voltage at its full value but a sequence of pulsating values instead. The battery protection IC interprets this as an over-discharged situation and therefore disconnects the battery from the rest of the circuit. i just added a larger cap on the protection chip to delay its startup just enough for the battery voltage to stabilize

[@dekutree64]

I love LiFePO4. NMC looks impressive on paper, but it degrades so much more quickly, it's not worth the added cost and danger for a couple years of higher capacity. And the degradation is slowed down by not topping it up or fully discharging it, so you end up treating it like it has the capacity of LiFe from the start anyway.

[@Paddington2000]

Really interesting video 👍

[@jimjjewett]

Why do you need short-circuit protection, if you already have protection against both over-discharge and over-current? Is there some other way a short-circuit can cause damage?

[@Shocker99]

3:00 In my opinion, the grey item on the left is a battery. On the right is a battery pack. Never have i heard a single battery being called a cell.

[@SuperBobek1]

If the battery that I am using in my project has a built-in protection circuit (DW01A IC), is it worth adding another DW01A protection IC on the PCB of the designed device? Or does it miss the point and could cause problems in the operation of the built-in protection circuit?

[@eetengineer]

If the battery pack already has protection, then there isn't a need to add another protection IC. They may conflict with each other.

[@SuperBobek1]

@@eetengineer Thank you for response.

[@marcrobison2125]

Great video! love this

[@edo_mazzone]

the video I was waiting for❤

[@younessamr6802]

what about usb fast charging and data transfer on the same port

[@ChrisJackson-js8rd]

dendrite growth in battery cells sounds like a similar phenomenon to solder whiskers

[@ahbushnell1]

He didn't talk about BMS.

[@guillep2k]

It's already a 1:30:00 video, man!! They can do a follow-up.

[@ahbushnell1]

@@guillep2k He still didn't even mention a BMS.

[@eetengineer]

We discussed some simple safety circuits (BMS) at the 37:27 mark. If your looking for more detail about BMS systems, I have a series on my channel where I am designing a BMS system step-by-step.

[@ahbushnell1]

@@eetengineer I missed that. Good video. I'll check out your web site.

[@ahbushnell1]

@@eetengineer Did that have discussion of cell balancing?

[@MrSomethingdark]

BRat moj mogao si malo bolje taj Engleski nauciti kad si vec tamo otisao!

[@oskimac]

the algorithm suggested the video and i swear for a minute i think i was looking at dave from eevblog