@@KSToh Yeah, I have the Roborock S5 too. The S4 I was talking about means 4 batteries in series (2 in parallel). To get 12.8 AH, each cell would have to produce 6.4 AH, which is impossible.
@@Bob_Adkins this is interesting and definitely possible that the battery is not 12.8 Ah. How do I measure the capacity? And what is the explanation for saying 12.5 AH is not possible? Just for my knowledge.
@@KSToh Sorry I'm late! To measure the capacity, you need a hobby battery tester. It will drain the battery and measure the capacity and report it exactly. Presently, sellers are not honestly reporting the actual capacity. That's a nice way of saying they lie. 12.5 AH is not possible because currently, the highest capacity 18650 cells made are only about 3.5AH and VERY expensive. So even 7Ah is stretching the truth. 6AH are more common and reasonably priced. Amazon and eBay are infected with fake batteries claiming impossible capacity, so try to stick with batteries with Samsung, LG, NCR, and Panasonic cells for honest ratings.
@@Bob_Adkinsjust to add on, batteries in series sums up voltage and in parallel sums up capacity. So for a battery pack to have 14.4v with 12.5Ah it’d be 4cells in series with 4 batteries in parallel each cell, rated at about 3Ah, meaning a total of 16 18650 batteries thus making the battery pack impossibly big to fit in the robot
@@wiktorsz1967sharp observation. I have three robots. I did try 6500mAh first and when there was no problem, I went for 13800mAh for all the rest. Video was from the first change.
I went for 12,800 on March 2023. As of now the battery is dying fast. My roborock is unable to finish cleaning half the house before dying on the spot everyday. I just did a zone clean. It went there and just died. From 100% to 69% battery when I placed it on the base. Weird.
Do not buy the 12800 mAh version, since as others wrote they are fake. It is more than the current battery density record (about 7200mAh) But the bigger problem is that it reports a fake charging level... so the vacuum shows that the remaining battery is decreasing very slowly (as it would be really 12800 mAh), and turns off at 60%... The vacuum can't go to the docking station since it accidentally turns off. AliExpress refund the money after recording a video. (the seller did not want to do it). Now I'll order an 5200mAh ot 6500mAh version.. I hope they are not fake (the price is not much cheaper). Telling th e truth the 12800mAh version would be OK or me it it reports the real levels. But that is unacceptable for me that it can't go to the dock.
My roborock s5 will just stop (being offline / turned off) and only turn on once I bring him back to the base, where he charges. Do you think this is also the battery that suddenly loses charge?
Thank you! Was so simple... It's done! 🎉
Cool. Please like and subscribe!
An S4 battery pack with 12.8 AH is a little too good to be true. Did you test it or notice it lasts longer than the 5.2 AH original? Thanks!
I did not test it. But it last longer. Mine was for S5 & S6. Not sure if suitable for S4.
@@KSToh Yeah, I have the Roborock S5 too. The S4 I was talking about means 4 batteries in series (2 in parallel). To get 12.8 AH, each cell would have to produce 6.4 AH, which is impossible.
@@Bob_Adkins this is interesting and definitely possible that the battery is not 12.8 Ah. How do I measure the capacity? And what is the explanation for saying 12.5 AH is not possible? Just for my knowledge.
@@KSToh Sorry I'm late!
To measure the capacity, you need a hobby battery tester. It will drain the battery and measure the capacity and report it exactly. Presently, sellers are not honestly reporting the actual capacity. That's a nice way of saying they lie. 12.5 AH is not possible because currently, the highest capacity 18650 cells made are only about 3.5AH and VERY expensive. So even 7Ah is stretching the truth. 6AH are more common and reasonably priced. Amazon and eBay are infected with fake batteries claiming impossible capacity, so try to stick with batteries with Samsung, LG, NCR, and Panasonic cells for honest ratings.
@@Bob_Adkinsjust to add on, batteries in series sums up voltage and in parallel sums up capacity. So for a battery pack to have 14.4v with 12.5Ah it’d be 4cells in series with 4 batteries in parallel each cell, rated at about 3Ah, meaning a total of 16 18650 batteries thus making the battery pack impossibly big to fit in the robot
Changed mine. But had some smoke come out near a wheel? Did something go wrong?
Works fine btw
Oh dear. That should not happen
Where did you buy the battery from?
I gave the link in the video description. s.click.aliexpress.com/e/_okvWLYB
Does it matter which capacity battery I replace with? Should I just go for 12.8k mAh?
Does not matter. I went for the 12,800 mAH. Please like video!
@@KSToh on the video you have 14,4v 93,6Wh battery. This means that it’s 6,5Ah. Not 12,8
@@wiktorsz1967sharp observation. I have three robots. I did try 6500mAh first and when there was no problem, I went for 13800mAh for all the rest. Video was from the first change.
I went for 12,800 on March 2023. As of now the battery is dying fast. My roborock is unable to finish cleaning half the house before dying on the spot everyday. I just did a zone clean. It went there and just died. From 100% to 69% battery when I placed it on the base. Weird.
Do not buy the 12800 mAh version, since as others wrote they are fake. It is more than the current battery density record (about 7200mAh)
But the bigger problem is that it reports a fake charging level... so the vacuum shows that the remaining battery is decreasing very slowly (as it would be really 12800 mAh), and turns off at 60%... The vacuum can't go to the docking station since it accidentally turns off.
AliExpress refund the money after recording a video. (the seller did not want to do it). Now I'll order an 5200mAh ot 6500mAh version.. I hope they are not fake (the price is not much cheaper).
Telling th e truth the 12800mAh version would be OK or me it it reports the real levels. But that is unacceptable for me that it can't go to the dock.
I don’t have this problem of robot not going back to dock. 🤷🏻♂️ but I never measure whether it’s really 12800 mAh
My roborock s5 will just stop (being offline / turned off) and only turn on once I bring him back to the base, where he charges. Do you think this is also the battery that suddenly loses charge?
Yes, it’s the battery. Change it. Please like my video. 🙏🏼
Roborock S5 max battery go from 40-19% instantly, even after battery change
That’s strange.
Your scredriver is Bosch not Philips 🙈
Nice one. What I meant is the screw head. Also noticed it should be Phillips not Philips. Please like my video!