Quote from: anon on July 15, 2019, 01:53:44
1. Instead of swapping out batteries on the go, today we have type-C battery packs, compatible with most new laptops.
2. For repairability, the proprietary nature of both internal and external battery packs is the biggest problem IMO. Unscrewing a ThinkPad only takes a few minutes and batteries only die after several years. But, old model, proprietary batteries still in good shape can be hard to obtain.
3. Laptops like the Dell XPS 15 (97 Whr) and Samsung Notebook 9 NP900X3T (75 Whr and 13" but still weighs less than a kilogram) show that large internal batteries are possible in lightweight devices.
XPS 15, 942 minutes on WiF v1.3
T480 (24+72Whr), 794 minutes on WiFi v1.3
Overall the biggest loss is customization. A T490 will only ever have one battery capacity. I also hope to push USB-PD battery packs into the discussion because they obviate the need for the "bridge" part of the "power bridge" in my opinion. When you say "Still, extended batteries does become impossible and taking along spares does as well." I disagree with the last point.
Totally agreed, since there are decent usb-c power banks on the market, I couldn't care less for proprietary external batteries. I can basically use that PB on every notebook from every manufacturer I might own until it's finally dead.
And as long as they are replaceable (by the user!), internal batteries are fine. After all, how often do you have to replace them? I still use a T430 (2013) as my primary rig with only its third battery now. In the same time span, I also had to replace the trackpad (+keyboard, since it comes as a single unit) twice.
In everyday life, internal batteries simply offer too many advantages (so it can be either more robust, lighter, less bulky or cheaper)