Hello!
I have been using Haiku a pretty long time, but always in some virtual environment or too old/slow hardware, so daily driving with it wasn’t really possible/pleasure. Basically web browsing was the main reason, because it requires nowadays quite a powerful machine.
Couple weeks back, i started to think that maybe i should buy dedicated laptop for Haiku. I started to research Haiku hw database, this forum and asking AI about some things. I noticed that some Intel based Thinkpads and Latitudes was pretty good in reviews and those have best compatibility. A couple days of Ebaying and found this from AMSO.. 
Lenovo Thinkpad T460s with i5-6300U cpu, 8Gb ram, 240Gb SSD, 1920x1080 display, finnish keyboard layout.. and of course a working battery, but this has only one battery inside, second have been removed. Main battery have 82% of capacity left, luckily it is OEM Lenovo battery.
It came with Win10 Pro FI and i tested hardware and battery life with it, basic browsing and some youtube videos got about 4,5 hours of battery life. Laptop is pretty good shape, no cracks anywhere, screen has couple of marks from trackpoint buttons, but it doesn’t really bother me.
Everything was working good, so i gave Windows a exodus and installed Haiku R1Beta5 to it. I made UEFI install and partitioned SSD in three partitions, EFI, HAIKU and 50gb MyStuFF where to store important files. It worked pretty good out of the box, but trackpoint and touchpad was a bit problematic, sometimes another worked and another didn’t, just randomly. I upgraded OS to latest nightly and it gave some more options to adjust mouse settings and now it is pretty good and usable. Still sometimes trackpoint doesn’t work..
Battery life is, well not good as in windows, but Haiku drains battery about 45% per hour in basic browsing, so i get about two hours of battery life. I will probably buy that another battery later, maybe from iFixit eu-store, it costs 65€ with postage and they seems to have pretty good reputation/quality. With it i should get maybe 4 hours of battery life.
I tried it also with Ubuntu 26.04 live usb stick, i installed tlp and checked battery wear/info with it and then calibrated battery in ubuntu, got couple of percent more capacity with it. I tested also battery life in there with same kind of browsing and i got 2 hours 45 minutes of battery life in balanced mode and display brightness about 50%.
With “sudo tlp-stat -b” command i noticed that there was battery charging treshhold limits, which were 0% to 100%. I read from internet that those limits are stored in chip, so ran “sudo tlp setcharge 75 80 BAT0” and checked again and limits changed. I rebooted ubuntu live and checked values again, and they were still 75% and 80%.
Then i booted to Haiku and voila, same charging limits are used in Haiku too. Why i did this, well i probably keep this laptop sometimes in charger for longer times, and this now keeps battery charge maximum 80% all the time and it only starts charging below 75%. I hope this old battery lasts a bit longer in this way.
A bit long post, sorry about that, but i am VERY happy with this laptop! 
Finally i really can daily drive Haiku! It even plays Youtube videos in 1080p with Iceweasel, how awesome is that!!! (Btw. it plays 1440p videos also in youtube, without dropping a single frame, but fan spins pretty fast then!)
Thank you developers!
