Using external battery VIA existing Laptop battery pack
However I have thoroughly searched in the past, but hadn't found what I was looking for, so that's something :-P .
If anyone would have the good grace to direct me in the right direction i'd appreciate it :) .
I've seen a bunch of 'replace the batteries in your Laptop battery pack' guides, yet i'd like to avoid doing this, and simply use an existing multi-voltage (9, 12, 19v) battery pack I already have - because it's like 16,000mah, and I already take it with me for many other gadgetries already.
I was thinking I could take apart battery pack, take out dead cells if possible (or leave in if need be), and wire in an input socket to laptop battery pack so I can plug the external batt directly into the internal battery pack.
My WISHFUL thinking is that the charge current going into the battery pack - when normally plugged in and charging would be close enough to what it could get from the external battery pack so I could plug straight into the battery (but could add a voltage regulator from external batt if need be), and the laptop would run as if on battery alone (10.8v 5200mah, 56wh), just for much longer.
So i'd be tricking laptop into thinking it's running from the battery, with the current coming from the external battery pack, as opposed to running at 19v 6.32am, as many external power supplies do.
Laptop: Asus n53sv,
Power brick: 19v, 6.32a