For laptop batteries I have been told that they (the batteries) will not get a memory. I have yet to find a rechargeable battery that doesn't get a memory. With a laptop it is easy to determine. You charge the laptop battery until fully charged. Then when running the laptop on the battery the low power warning pops up in 5-10 minutes (often less then 5 minutes). This is why I usually make a drain battery power setting plan. This power plan has no auto shut off. I can usually run the laptop with 0% battery life for 1-2 hours. Then the laptop shuts off. Turn the laptop on and repeat. When you might get the laptop to post and then it is off again you can charge the laptop battery for the number of hours it takes to get a full charge. This is a pain if you did not note that when you got the laptop. Mine is 12 hours. I have seen 8 hours, 24 hours, 6 hours you need to know what you laptop battery takes for a full charge. You can over charge it (I did on older batteries) it you leave them charging for too long. After fully charged hour-wise I use the laptop until the power runs out again. Then I charge it and change the power setting back to what I normally use. I get my full life out of the battery again. I usually drain the battery 1-2 times a year. I have a 8 year old laptop still on its original battery. I get 3 hours of no power saving use on it and 6 hours of power saver setting use. I do the same thing with my newer laptop. Until I see otherwise I'll keep doing what I am doing.
I know that is not what the laptop companies tell you. My own experience with about 100+ laptops and few thousand other rechargeable batteries is they all get a memory at some point. Draining them, the timed recharge, then use until out of power resets the memory.