Chosen Solution

I believe my question is manufacturer-agnostic. I have replaced the battery of my laptop. The new battery reported to be 51.5 Wh, but only charged to 5 Wh. So I bought another one and this one charged to 30 Wh and stopped there. Now I’m wondering, are these just defective (quite possible), or is there something in my device (software or some hardware controller), which remembers the last battery state and stops charging beyond that point? In other words, when installing a new battery in a laptop, would you expect it right away to charge to 90%+ of its advertised capacity? Update (01/23/2023) Update for anyone reading this in the future: I ended up buying an ‘official’ (Lenovo-branded) battery pack for about 90€ (aftermarket batteries were 40€ and 60€) from ipc-computer.de. Sadly, they also couldn’t tell me any production dates ahead of ordering, nor is a production date printed on the battery pack. I find that really irritating and unsatisfying, but apparently this is normal right now. According to the Windows battery report, the new pack is made by Celxpert, while the one that came with the machine was made by LGC (as @jayeff pointed out, that stands for LG Chem). I’m quite happy with it, after three cycles, I get about 44 Wh out of it, which is 2-3h of normal use. Not amazing, but probably what you can expect from this not particularly efficient (but otherwise still great!) Yoga 730. It also charges from 2% to 100%, as one would expect. (But after my experience with the aftermarket batteries, is unreasonably satisfying to watch!) Also having zero PROCHOT or similar performance triggers.

Here you can see what lenovo vantage should look like with batteries installed (Mine is a T480 with dual batteries installed). If yours doesn’t show this, you’re kind of screwed unless you shell out for yet another battery (As far as i can tell you’ve already bought 2). Alternatively, what does windows battery bar say (Bottom right where the battery icon is or in the control centre thingy of windows 11). If that’s fine then HWinfo seems to be acting funky. If not however, you might just be unlucky 2x as i don’t know of a battery controller on lenovo’s (At least the ones i own which are the T480 and an S730)

Hi @hheimbuerger Try uninstalling the Microsoft ACPI-Compliant Control Method Battery drivers in Device Manager , restart the laptop and check if this resolves the problem. To get to Device Manager in Win10/11, press the Win key and the x key (both together) and click on the Device Manager link that appears in the menu list. In Device manager go to Batteries - click + or > to expand the list - right click Microsoft ACPI-Compliant Control Method Battery - Uninstall and follow the prompts. Restart the laptop in the normal manner. Windows will automatically reinstall the drivers. There are 4 compatible batteries listed for the model. The Lenovo part numbers are 5B10Q39197, 5B10W67390, 5B10Q39196 & 5B10W67214. If you suspect that it may be the battery that is the problem, check if the batteries you’re using has one of these part numbers shown anywhere on the battery or mentioned in the specifications etc as others that say they are compatible may not be if it is not shown. Search online using the part number only to find suppliers