10-17-2019 11:31 AM - edited 10-17-2019 11:39 AM
I have a lenovo yoga 910-13ikb and am having an issue with the battery. Computer shut off one day and for a few days would only work while plugged in and would shut off when trying to run on battery. Then it just stopped doing that all together. I removed the battery and booted up with it out to test if the battery was the issue. PC turned on and ran fine. reconnected the battery and now the PC would start and run on power but it was no longer detecting any battery. I was getting a "plugged in, not charging" message, while at the same time it showing the battery level at 100% (always shows this now). I removed the ACHI battery power module, or whatever its called, in device manager and rebooted allowing it to reinstall. I now got a "plugged in" message. after a while that changed to "255% available, plugged in" and when i unplugged the power cable the screen dimmed, knowing its on battery but the battery symbol was empty and the message was "unknown remaining".
Heres what i've tried:
-Tried 2 new batteries. I believed the 1st one was defective so i sent back and ordered another one, no difference from the original battery. Almost always a new battery has solved this problem
-removed the achi-power drivers and tried fresh install from the one on lenovos support site (was the same version, there is nothing newer)
-tried the discharge static method, no success.
-tried another power supply, albiet not a 45w one but one that would still power and charge the PC, PC ran just fine off of it, no change to battery.
-tried to update bios but was already on the latest version (btw what a **bleep**ty basic bios this thing has, come on lenovo!)
So i'm now thinking that its a bad motherboard that is no detecting the battery. However i'd thought i post here if anyone had any other ideas before i order a $4-500 motherboard for this thing.
EDIT UPDATE: well i just turned it on, with the power connected obviously, and its now telling me no battery present. But when i unplug it, it stays on. So def a motherboard issue?
Solved! Go to Solution.
10-18-2019 07:34 AM
As per hardware manual (page 22), checking operational charge:
" Perform operational charging. If the battery status indicator or icon is not lit, remove the battery pack and let it return to room temperature. Reinstall the battery pack. If the charge indicator or icon is still off, replace the battery pack.
If the charge indicator is still not lit, replace the system board."
Have it plugged in the charger for 2-3 hours taking note of the battery indicator (item 2 page 9). Do not turn on the laptop but just have it connected to it so we expect the led either off or blinking amber. This should change from amber to white to see if the physical connections are ok specially if you have verified the the ac charger is ok (page 21).
I hope this helps answer your query.
Update us how it goes.
10-18-2019 09:13 AM - edited 10-18-2019 09:14 AM
Thanks for the reply. I left the laptop plugged in and off for several hours, and the battery indicator stayed fishing Amber. Even tried with the new battery and it just stayed flashing Amber. It can't seem to detect how much charge is left on the battery, and i honest can't tell if it is in fact actually charging the battery.
I ordered a motherboard for it which will be here next week. I will update what i find.
10-18-2019 09:37 AM
I may likely be a board issue having the same flickering amber led and not receiving any charge from the working ac charger.
Any update is well appreciated.
11-08-2019 12:25 PM
Did you replace the power/audio module or the entire mother board? There are many small pcb modules with ribbon cables. Did you really replace the motherboard? If so where did you buy it and how much did it cost?
I have the similar problem. Existing original battery diagnostics report it as good, reset the entire windows fresh, all the drivers are BIOS are up to date, the power chargers are good. However, the battery won't charge. It charges on some days all the way to 100% and doesn't charge on other days.
Ran in to the following problems including original battery not charging and 3 brand new replacement batteries from 2 different vendors are not getting detected no matter what what I did including:
Then ran in to audio not working and few days later the power button was not working.
The only way to boot the system was to disconnect the battery, reconnect it and then insert the power charger.
Connecting the power charger alone without battery won't give any power to the laptop.
Finally re-examined all the connections, removed and reinserted the ribbon cables including the power/audio module and other modules.
Don't simply yank the ribbon cable, there is a small ribbon flip that need to be lifted and the cable to be removed and then inserted and the flip need to be closed down. Make sure the small rubber pieces stay on top of these ribbon cable at the connectors.
This resolved the power button problem. Otherwise I was about to buy a new power / audio module for $100.
I am an expert in hardware/firmware/bios/software but still this Yoga 910 design doesn't make me happy.
I have been using Lenovo laptops for more than 20 years.
Now the system is charging when the battery goes down 20% with slow blinking amber color.
I have played with all the system / battery settings as well.
I was about to buy a new Lenovo laptop but after looking at the bad quality broken down new displays at Best Buy, decided not to buy again. I have been using IBM, Lenovo, Apple, HP, Acer, Dell, Toshiba laptops for more than 25 years and the quality of Lenovo is falling down to cheaper ones like Acer now.
11-08-2019 12:42 PM
I replaced the motherboard only. Used the original side boards (usb, power, charging etc). I found the mothreboard on ebay for $250 canadian, which was like $185 US. Other than that I've seen prices of lik $400-500. Pobably wouldn't have gone this route if I didn't find it that cheap.
The cables from the MoBo to the side boards are very finicky. Upon reconnecting the board with the power button, i was off ever so slightly and registering a short and not turning on. had to reset it several times before it finally worked properly. This was probably the hardest motherboard replacement i've done, as you have to take all 3 boards out, including the fans, and then swap over the heatsink/fans. still can be diy though.