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T470s Battery/Power Issue
T470s Battery/Power Issue
Weird issue that I've started to have with my T470s....
Whenever I unplug the power source it shuts off immediately. If I turn it on with battery, it seems to work normally.
There also appears to be a similar issue where it turns off the moment it switches from Battery 1 to Battery 2 (which seems to always say 90% and not charging).
Any ideas what I could do to debug this?
Whenever I unplug the power source it shuts off immediately. If I turn it on with battery, it seems to work normally.
There also appears to be a similar issue where it turns off the moment it switches from Battery 1 to Battery 2 (which seems to always say 90% and not charging).
Any ideas what I could do to debug this?
Re: T470s Battery/Power Issue
Welcome to the forum.
I suspect Battery 2 may be faulty. Is there a way in the BIOS to disable it so you could test this theory?
I suspect Battery 2 may be faulty. Is there a way in the BIOS to disable it so you could test this theory?
Thinkpad 25 (20K7), T490 (20N3), Yoga 14 (20FY), T430s (IPS FHD + Classic Keyboard), X220 4291-4BG
X61 7673-V2V, T60 2007-QPG, T42 2373-F7G, X32 (IPS Screen), A31p w/ Ultrabay Numpad
X61 7673-V2V, T60 2007-QPG, T42 2373-F7G, X32 (IPS Screen), A31p w/ Ultrabay Numpad
Re: T470s Battery/Power Issue
I selected "Disable Built In Battery" in the BIOS and you seem to be correct. Now if I unplug the machine, it doesn't cut out. There's a note that the battery will be re-enabled on connection to AC Power, does this mean I would have to do this every time?
Re: T470s Battery/Power Issue
Hard to know. I must confess that I am not experienced enough with how these dual battery algorithms work on modern Thinkpads.
In any case, it is probably a good idea to replace the faulty battery.
In any case, it is probably a good idea to replace the faulty battery.
Thinkpad 25 (20K7), T490 (20N3), Yoga 14 (20FY), T430s (IPS FHD + Classic Keyboard), X220 4291-4BG
X61 7673-V2V, T60 2007-QPG, T42 2373-F7G, X32 (IPS Screen), A31p w/ Ultrabay Numpad
X61 7673-V2V, T60 2007-QPG, T42 2373-F7G, X32 (IPS Screen), A31p w/ Ultrabay Numpad
Re: T470s Battery/Power Issue
Yep. Actually seems to have fixed the AC Power issue after that tweak in the bios (even though the 2nd battery displays again).
I installed the Vantage software to track the battery and battery 2 does display as poor condition.
Will a 2 yr Lenovo on site warranty cover battery issues? Or am I going to be on the hook to buy my own.
I installed the Vantage software to track the battery and battery 2 does display as poor condition.
Will a 2 yr Lenovo on site warranty cover battery issues? Or am I going to be on the hook to buy my own.
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Re: T470s Battery/Power Issue
Shouldn't that T470s "act" identical to a T25 with dual battery?
Lovely day for a Guinness! (The Real Black Stuff)
Lenovo: X240, X250, T440p, T480, M900 Tiny.
PS: the old Boardroom website is still available on the Wayback Machine.
Lenovo: X240, X250, T440p, T480, M900 Tiny.
PS: the old Boardroom website is still available on the Wayback Machine.
Re: T470s Battery/Power Issue
Well, TP25 is like T470 (one internal, one external battery), not T470s (both internal); however, the algorithms are probably similar, I just never tested them.RealBlackStuff wrote: ↑Mon Jan 21, 2019 11:52 amShouldn't that T470s "act" identical to a T25 with dual battery?
Thinkpad 25 (20K7), T490 (20N3), Yoga 14 (20FY), T430s (IPS FHD + Classic Keyboard), X220 4291-4BG
X61 7673-V2V, T60 2007-QPG, T42 2373-F7G, X32 (IPS Screen), A31p w/ Ultrabay Numpad
X61 7673-V2V, T60 2007-QPG, T42 2373-F7G, X32 (IPS Screen), A31p w/ Ultrabay Numpad
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