[ltp] Battery options for X240

Tamas Papp linux-thinkpad@linux-thinkpad.org
Wed, 05 Mar 2014 15:13:57 +0100

Hi Jochen,

I can't help you with the particular question, but if you are looking
for battery balancing, AFAIK it is not supported since Ivy Bridge. I
don't know about the X240 in particular, but unless the BIOS implements
battery balancing, the second battery might be drained to 0% before the
machine starts using the main one. I find this inconvenient on my T430s,
and in retrospect I would have been better off with another laptop (with
a single, larger battery).



On Wed, Mar 05 2014, Jochen Spieker <ml@well-adjusted.de> wrote:

> Hi,
> I am tinkering with the configuration wizard for an X240. What I don't
> understand is the available options for the second, replaceable battery.
> Lenovo.de currently offers these:
> 1. 3 cell Li-Polymer (23.2Whr) Rear
> 2. 6 cell Li-Ion (47Whr) Cylindrical
> 3. 6 cell Li-Ion (72Whr) Rear
> What's the (visible) difference the three options? Are options no. 1 and
> 3 the same as depicted here?
> http://www.pcper.com/reviews/Mobile/Lenovo-ThinkPad-X240-Ultrabook-Review-Philosophical-Shift/Battery-Life-Software-and-W
> How large is no. 2 compared to no. 3?
> J.