Chosen Solution
Hello all, I come to this amazing forum since I couldn’t find answers for my problem myself. The laptop is actually model UX510UX, not UX303U, I selected that as there was no option for my model. Some weeks ago the laptop suddenly started hard shutting down whenever the battery percentage would reach 40%, and stopped booting when disconnected from charger, would only reboot when connected. The battery won’t charge (Windows displays “0% - charging”) and using a battery health tool, in a few days the health percentage went from 70% to 24% and now it’s back again at 56%, so I don’t think that’s valid information. I already tried disconnecting and reconnecting the battery, and pressing power button for some time to perform a reset, but to no avail. Also the date and time don’t refresh when the computer is off so that makes me think it’s also a CMOS/kts battery problem. I contacted Asus support asking where to find the CMOS/kts battery inside the laptop and of course they couldn’t help me, I tried looking for it but it doesn’t seem to be placed on the external part of the board where it would be visible. I don’t really want to dismantle the whole thing and potentially messing up only to not find the battery anyways. From your experience, could it be possible that the cmos/kts battery is inside the li-ion battery case, maybe that battery is also dead too, so replacing that will solve everything? Or what other solutions would you recommend trying? Thanks in advance.
Hi, You didn’t say what “battery health tool” you used to check the battery’s condition but try creating a Win 10 battery report and see what it shows regarding the status of the battery. Compare the Design capacity value against the Full charge capacity value. This will give you an indication of how good the battery is. If you determine that the battery needs replacing, then according to this supplier, the Asus part numbers for batteries compatible with the laptop are 0B200-02030000 or 0B200-02030100. Search online by using the part number only in the search term to find suppliers that suit you best. Sometimes the part number can be found on the battery if you wish to verify that you’re ordering the correct one. The part unavailable as shown by the supplier must be only from them. When searching online using the part number, other suppliers had them in stock I don’t know the laptop but here are some images from this video showing both sides of the motherboard and unless the CMOS battery is under the black tapes on the underside of the motherboard there doesn’t seem to be one or at least one that is obvious.
(click on image to enlarge for better viewing)
