<i>The option of replacing the cells in a genuine battery may be worth considering as an alternative to modifying the EC firmware, the advantage being is that you can choose your own high quality Li-Ion cells versus whatever you might happen to get in a replacement battery.</i><p>I suppose the whole &quot;safety culture&quot; around lithium cells in laptops has yet to change, but high-quality 18650 cells have been available on the open market for several years now, with all the accompanying products that use them (torches, vapes, power banks, etc.) The general public handling bare lion cells has increased significantly, whereas the amount of incidents related to cells catching fire etc. doesn&#x27;t seem to have increased correspondingly. The majority seem to be from lipo &quot;pouch cells&quot; which are definitely far more fragile and less resistant to abuse. (They&#x27;re also higher density = more energy to cause excitement when things go wrong, this is the type that&#x27;s been causing the hoverboard fires.) 18650s are more robust and it&#x27;s hard to cause a fire unless they&#x27;re seriously abused (e.g. severe overcharge or physical damage.)<p>Given that you can buy empty power banks and add your own cells like this...<p><a href="http:&#x2F;&#x2F;www.aliexpress.com&#x2F;item&#x2F;1Pc-6-X-18650-Battery-Case-Usb-Charger-20000mAh-Power-Bank-Battery-Case-Box-Shell-With&#x2F;1928848788.html" rel="nofollow">http:&#x2F;&#x2F;www.aliexpress.com&#x2F;item&#x2F;1Pc-6-X-18650-Battery-Case-Us...</a><p>...it&#x27;s odd that I haven&#x27;t found similar battery cases for laptops. (Or maybe they do exist and I&#x27;m just using the wrong keywords. If they do, please say so; that seems like a great product to have.)