I thought Collin's lab ended years ago...my life is complete again. I'm super happy to see and know this series is still alive

Anyone can teach about batteries; The presentation and production in this adds so much value. Kudos to Collin's acting and comedic timing, and Ladyada's obvious knowledge on the subject matter.

5:16 that joke made my day, seriously

Free of charge ... This one cracked me up ! I love lousy geek puns. And remember: With great power comes great ... electricity bills.

02:25 ok, everyone just going to pretend they never notice what the dog is doing.

are you freaking kidding me!? this is collins official youtube channel!?!?!?!?!? OMG!!!!! years ago after he was in the make channel, i spent days looking for his official channel and was bummed out I never found it, and now while doing some random search about some electronic components I stumbled uppon his old videos and then searched for collins lab again and this popped up!!!,dude! you are freaking awesome! I loved the videos you made with make, and I sure as heck am subscribing! you should be an electronics teacher, I learned more about electronics than in the technical school im still paying for an Electronic Systems Technician certificate lol, keep up the good work!

Thank you for all you do to make the world a better and more fun place, while teaching us valuable skills in computers, electronics, and programming. Collin, Lady Ada, and all the other staff at Adafruit are a national treasure!

Yay Colin's lab 🎉👏👏👍👍

loved the way it was presented :)

Finally Collins Lab video came

Wonderful video, and informative too!

I love how well spoken the people at Adafruit are in their videos. They make it easy to learn (:

You guys are amazing people! Thank you so much for the awesome content as always!

Please do more videos with Collin. Loved this!

Well produced and easily followable! Collin and Ladyada are and excellent pair for presentations. Thank you both for this!

The best channel on UKposts thank you guys ;-)

I love these two

You gotta love Colins Lab!

that was cool great job now i know the basics of batteries. More power to your page

Very informative! Thank you so much!

I love this guy. Such a Cool Dude!

U guys make electronics even moar sexier!! I love your videos!

WOW! Great part 2 on batteries. Obviously we could ask to know more about the many kinds of lead acid batteries, LiFePOs, and NiCds. But maybe it would be better to do a wrap-up on the failure modes of batteries. E.g. how did Samsung get into this mess with the Galaxy Note 7? Why won't my car start when it's -20 C? Why are there still NiCds? Why can we only fly drones with LiPos? Does it even make sense that Tesla PowerWall is a lithium battery when it doesn't matter how much it weighs? And many other engineering design questions I feel you could answer very well! :) Thanks for all the great knowledge so far!

It's Colin! Nice.

More like Ladyada's Lab. Still a great video. Thanks!

Fun and informative...not too mention "free of charge"!!! I wonder if you might go into the topic of how to figure out "battery life expectancy". I understand that amp hour ratings are done differently now by company's than they were in the early part of the last century. Apparently there was a Peukert number/formula used to help get a more accurate prediction of battery life. A more recent formula by Chris Gibson of SmartGauge Electronics takes into account the modern method of amp hour rating. I read details about this on page 12 of Charles Platt's book Encyclopedia of Electronic Components Vol 1, however, I found information on batteries from manufacturers often lacked the details I was searching for and there were very few examples in Mr. Platt's book to be clear that I was comprehending the process. I believe he wrote that a simple rule of thumb was to divide the aH rating in half... What say ye? Again, thank you for the ongoing videos. Let me know where to contribute, please!

nice work 👏 👏 👏

Invaluable information right there

You guys RULE!

i love collin

This video is very well made. Very interesting and I love the hosts and their performance! It brings a good light on batteries, especially for hacker and maker who just get into the field, or people wanting to know more about them. The only thing I want to point out, is that a dropout voltage of 1.2V in alkaline batteries is a bad way of engineering. Alkaline batteries typically drop out at 0.8V, so considering them dead at 1.2V wastes a lot of usable energy. Unless of course, the open circuit voltage is used to determine that. But that is another can of worms.

Great video like always ;)

Thanks. Very interesting

I'd love to see more about different battery chemistries. It seems like there is a new one every week. LiFePO4 is an interesting one.

Great explanation

No mention of Ni-Cad or the reasons to select a general chemistry type. Ni-Cad has about half the total energy storage of NiMh and needs some care in disposal, but they are unique in their very low internal resistance and potential charge and discharge rates(some as low as 15 minutes); which when designed for fast cycling, are several times faster than Li-ion (best 1.5 hour) or NiMh(best 2-3hour, a magnitude slower), if your project has a battery size limit and needs a huge burst of power Ni-Cad is still a top option. The other unique bit is that Ni-Cad can and even should be stored fully discharged while most other types should be stored charged, kind of a niche requirement but still to be considered. The whole memory issue was basically an urban legend based on a misapplication of some satellite battery research. What people think is cell "memory" is actually damage from cheap poorly designed chargers that keep "charging" after 100% or battery packs that allow a cell or two to suffer a reverse charge at some point. The real memory issue was a rather minor effect and caused by thousands of absolutely identical charge/discharge cycles such as seen in the orbital period of a satellite. Alkaline has very high internal resistance so is no good for fast draw down but for veryt low current apps it has very low self discharge even over years. Silver oxide are a top choice in cold winter weather. Lithium(metal single use or ion rechargeable) due to their high energy storage density and moderate internal resistance and charge cycle can often take the place of both NiCad and NiMH, however they cost more and the lithium-metal type are not allowed on passenger aircraft.

7:31 "We definitely covered a lot of *ground* here." Get it?

Now that we have covered some GROUND!

u 2 are awesome

great Info

Free Of Charge...

don't "fold, bend, spindle, or mutilate" these batteries - love it...

Great video , just missed Lead Acid and Zinc carbon ones ;) the good old days.

Which was the drone she set off when demonstrating the lightness of the Li-Po batteries ?

It's geek royalty! Please partner up on more videos in the future. Good Chemistry!

love it, nice video for kids & electronics noob. pls make Collin's Lab weekly! btw Collin's jokes are not so bad, keep tryin .lol :)

well done

i love you both equally :)

AFAIK, there are also rechargeable coin cells, like LR2032 or even thinner.

Can't really find recommendations which battery to use for DIY/IOT products. E.g. Is it better to use 9V to directly drive motors and buck converter for microcontroller or to have Li-ion or Ni-MH and boost-up converter for motors and some converter for a microcontroller. What is the difference in maximum/minimun current consumption for the different battery types?

Lead Acid! Car Battery or Deep cycle is somewhat portable. Make a hugely long lasting wearable!

so what changed with the 3.6 3.7v thing? like its chemistry how could it have changed? also why cant we mix types if the full and empty voltages are the same? im assuming you were refering to parallel right? obviously you cant in series.

nice :)

Would the solar charger work for smaller cells? I have a couple smaller cells from stuff I've taken apart that I'd like to reuse, but there's no way they're 12v, and don't have the solar connectors.

What about 18650, and 14500 batteries? Can they be used to power up projects?

I wanna see the outages of the Drone grab....

Awesome drone! How is it called?

HI dose colin cunningham still work at adafruit. ????

If a battery can do 1A of discharge.. does putting it in Parallel ADD the total current? E.g. 2x 1A Battery in Parallel gives total of 2A discharge? or is it in series?

That usb dog toy tho!! LOL!!!

Try to design to cut-out below 0.8V per cell for alkaline... or there is quite some juice left ;-)

Ive heard you can test if a 9v battery is good by putting your tongue accross the terminals. Is this true?

great vídeo,It came in Hand,i need Help on It because in planing to make a powerbank like to my raspi, so im Search much because i can use many li íon baterry of 3.7 together and down the Voltage,but How can i recharge It later? so You guys showed that i can recharge via USB,them comes 2 questiona: 1- its 3.7v baterry to Feed raspberry pi on vídeo,is that ok,i mean 3.7 to 5v is low and can overheat the baterry 2- for recharge via USB its 5v in 3.7v baterry,wont make problems because its higher voltagem than baterry support. or can i use an Voltage balance ?

That dog tho... Also so if I wanted to make my DIY powerbank made from 4xNi-MH 1,2V batteries, I will need voltage booster because it will drop later even further from 5V?

Why no B cell, AAAA cell, 6V L4R44 or lead acid?

What about 6V and 4.5V batteries

Negative side has more electrons hahahaha

The hound from game of thrones.. 😳

I ship it

eLAUGHtronics!

Nice USB toy... ;)

And for Gym junkies you always have the "portable" lead-acid batteries.

idk why. but i feel so drained after watching this clip ;)

😂😂😂😂😂😂😂😂😂😂😂that dog drive

Careful with those Li-ions, don't wanna pull a Samsung.

Ladyada, Uhh, You aren't supposed to chew batteries, are you?