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Since no one replied yet I will. What he used, and really the only way, is a spot welder. You can find them inexpensive around 50 bucks and then you have to cut and bend the strips out of a roll. I tried to reuse mine but the metal is too thick for my hobby level spot welder. I did try to solder before getting this tool but it just doesn't work. The amount of heat needed feels.....unsafe lol. This is so much easier to do and once I had the tool I find myself repairing all types of battery powered things. Even making my own packs for things

😂. you’ll have it done in a jiffy. lol

/********* SparkLabz - Motion activated bin *********/ #include <Servo.h> #define TRIG 10 #define ECHO 9 #define SERVO A1 // Ultrasonic sensor variables long duration; float distance; // Servo variables Servo myServo; void setup() { Serial.begin(115200); // Start serial communication pinMode(TRIG, OUTPUT); // Set trigger pin as an Output pinMode(ECHO, INPUT); // Set echo pin as an Input myServo.attach(SERVO); // Attach servo pin } void loop() { // Clear trigger pin digitalWrite(TRIG, LOW); delayMicroseconds(5); // Set triggerPin to HIGH for 10uS digitalWrite(TRIG, HIGH); delayMicroseconds(10); digitalWrite(TRIG, LOW); // Read echoPin and get sound wave travel time in microseconds duration = pulseIn(ECHO, HIGH); // Calculate distance distance = (duration/2.0)/29.0; // Prints distance to Serial Monitor Serial.print("Distance (cm): "); Serial.println(distance); if (distance < 50) { // If something is closer than 50cm, open the bin myServo.write(180); delay(5000); } else { myServo.write(0); delay(15); } delay(100); }

I don’t think they’d fit. If you did find a way to fit them, the other thing to check would be if the 21700s are lithium ion or LiFePO4 as different chemistries have different nominal voltages. The Ryobi ONE+ BMS is designed for lithium ion cells.

No to thick

Thanks for watching!

Hi there, I had a look at the datasheet, looks like the Panasonic CGR18650CG can only discharge at about 4A, which is not high enough for power tools. I highly recommend using 18650 batteries with atleast 15A discharge rate.

You can find Ryobi ONE+ compatible BMS board on ebay or aliexpress and they will get the job done but are not original. If the cells are faulty and BMS is working in a Ryobi battery pack, you can use that.

Thanks seem more are getting in to repairs..trying to find a working spot welder..

/********* SparkLabz - Motion activated bin *********/ #include <Servo.h> #define TRIG 10 #define ECHO 9 #define SERVO A1 // Ultrasonic sensor variables long duration; float distance; // Servo variables Servo myServo; void setup() { Serial.begin(115200); // Start serial communication pinMode(TRIG, OUTPUT); // Set trigger pin as an Output pinMode(ECHO, INPUT); // Set echo pin as an Input myServo.attach(SERVO); // Attach servo pin } void loop() { // Clear trigger pin digitalWrite(TRIG, LOW); delayMicroseconds(5); // Set triggerPin to HIGH for 10uS digitalWrite(TRIG, HIGH); delayMicroseconds(10); digitalWrite(TRIG, LOW); // Read echoPin and get sound wave travel time in microseconds duration = pulseIn(ECHO, HIGH); // Calculate distance distance = (duration/2.0)/29.0; // Prints distance to Serial Monitor Serial.print("Distance (cm): "); Serial.println(distance); if (distance < 50) { // If something is closer than 50cm, open the bin myServo.write(180); delay(5000); } else { myServo.write(0); delay(15); } delay(100); }

@@SparkLabz Ta very much.

@@SparkLabz

18650s are only a few dollars each for quality ones. Way cheaper to rebuild like this than buying all new

eve25 cells go one sale at the 18650 battery store for $2 a cell.

Ha. That's is what I'm wondering too.. Hookup--no?

that will work great, 30A is plenty of discharge current!

Glad you liked it! Thanks for watching!

No, it has to be a spot welder as regular welder would overheat the battery and probably cause fire!

Because the board steps up the voltage as required by device (5V, 9V or 12V), 1S is sufficient. For capacity, you add more cells in parallel.

@@SparkLabz no, you don't have to match cell capacity when putting cells in parallel. Especially when you're not drawing many amps.

Wrong. May depend on the model of the battery pack. I have this model and the cells are green, exactly the same as in this video.

@rogerwilco5187 the original batteries were all, black! The tool bodies were originally black and blue "before" they changed to the green color they are now. I have several tools of that era.

@@charlesr.beasley6222 Oh, I misunderstood. I thought that you meant the cells that were already in there weren't the originals, but you were referring to his remark about it being an old battery. It didn't occur to me that you'd be referring to what are long obsolete batteries when the video is obviously about the ONE+ batteries.

@rogerwilco5187 the black batteries were referred and labeled ONE+ before they were green, yellow labeling.

Depending on the age of the battery pack, you will find different cells within. But as long as it uses 18650 batteries inside, you can follow my method.

Hi there, you can put as many cells as you like. Make sure they’re in parallel configuration as showed in the video. Towards the end of the video you can see the 3D print design. I believe you can do 6 batteries using the template. Or you can edit the template to fit more batteries. Thanks for watching!

Thanks for watching! Here's a link to the spot welder (affiliated) amzn.to/46mPUQe

Thanks for watching and well spotted!

Thanks for watching! In this case, Samsung INR18650-15M. But the table in this reddit post might be helpful for your particular 18V battery Ah rating/year and place of manufacture: www.reddit.com/r/ryobi/comments/oxn53g/psa_ryobi_is_using_chinese_18650_cells_in_most_of/

Thanks for watching, sounds like a good deal for $25 per 4Ah battery. Are these original Ryobi batteries?

Was that USD?

Interesting, I didn't take note of this before. Perhaps those cells go out of balance over time, which happens across many cycles but could also happen early if the BMS is faulty.

I've rebuilt many of these Ryobi batteries. I haven't seen any particular pattern of failure. What did you observe???

@@test-193 someone over on another forum said that Ryobi's design with their BMS had it burning out/failing much sooner than other big tool companies. They seemed to be saying that the BMS fails before the batteries ever run out in a lot of cases. Have you seen this?

Haven't encountered this before. Potentially a faulty BMS. Have you measured the individual cell voltages?

Thanks for watching. Yeah, it's a matter of finding suitable 18650s at a good price.

Thanks for watching! Yes, getting batteries rated for high discharge is essential! From not only performance but also safety. Thanks for sharing your thoughts.

What cells are originally in this battery before upgrading them?

What size and kind of torx screw did you use? I can't find the right torx for it. I'm referring to the screws inside the battery holder

I just went with Sony xtc6. 3Ah, 30A discharge

All the best and thanks for watching!

Hi there, thanks for watching! The main difference I would expect is that the charge time would be doubled if you go from 1P to 2P. The BMS should still balance the voltages all the same. Output wise, it would cutoff once the pack voltage gets too low (not sure what the cutoff voltage is). Were you hoping to increase the runtime of the battery pack by adding extra set of cells in parallel? That should work, but you'll need an enclosure that fits the extra cells. If you do have say a 4Ah enclosure but a BMS from a 1.5Ah pack, it should be fine to use the 1.5Ah BMS for a 2P configuration to be housed in the 4Ah enclosure. Hope that helps!

Thanks for watching!

Hey there, thanks for watching! The spot welder is the Sequre SQ-SW2 - here's a link to the spot welder (affiliated) amzn.to/46mPUQe

Thanks for watching!

Glad it was helpful! Thanks for watching :)