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PSA: Update your Lenovo ThinkPad X1 Carbon BIOS or be prepared to wait 6 hours for a full charge

PSA: Update your Lenovo ThinkPad X1 Carbon BIOS or recharging can take almost 6 full hours
PSA: Update your Lenovo ThinkPad X1 Carbon BIOS or recharging can take almost 6 full hours
The latest BIOS and Thunderbolt firmware update as of March 2 fixes the battery recharge rate of the ThinkPad X1 Carbon. If purchasing a unit from a reseller, the system may be outdated and in need of a manual update.

When testing battery life, we almost always drain the battery completely to record how long the laptop can last on battery power. Afterwards, we would then record how long the system would take to fully recharge from empty to full capacity. This typically takes 1.5 to 2.5 hours on most laptops. On the Lenovo ThinkPad X1 Carbon, however, a full recharge can take almost 6 hours.

We recently reviewed the 2019 ThinkPad X1 Carbon equipped with a Comet Lake-U Core i7-10510U CPU. Battery life is roughly the same as last year's model since they share the same 51 Wh battery capacity and chassis design, but the recharge rate on the newer model would be significantly slower even after applying all Windows updates at the time of review.

Thankfully, the slow recharge rate is an easy fix. Launch the included Lenovo Vantage software and run the system updates to download and install the latest Thunderbolt 3 and BIOS drivers for the laptop. After a system restart, recharging from empty to full capacity will take about 1.5 hours only.

For our full take on the ThinkPad X1 Carbon, see our existing reviews here.

Buy ThinkPad X1 Carbon, Core i7-10510U now on Amazon

Recharge rate prior to updating the system. Windows estimates a recharge time of over 5 hours when it should only be about 90 minutes
Recharge rate prior to updating the system. Windows estimates a recharge time of over 5 hours when it should only be about 90 minutes

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> Notebook / Laptop Reviews and News > News > News Archive > Newsarchive 2020 03 > PSA: Update your Lenovo ThinkPad X1 Carbon BIOS or be prepared to wait 6 hours for a full charge
Allen Ngo, 2020-03-31 (Update: 2020-04- 1)
Allen Ngo
Allen Ngo - US Editor in Chief
After graduating with a B.S. in environmental hydrodynamics from the University of California, I studied reactor physics to become licensed by the U.S. NRC to operate nuclear reactors. There's a striking level of appreciation you gain for everyday consumer electronics after working with modern nuclear reactivity systems astonishingly powered by computers from the 80s. When I'm not managing day-to-day activities and US review articles on Notebookcheck, you can catch me following the eSports scene and the latest gaming news.