High capacity battery switches off my X201s

[harryK]

So I have a x200s with an x201s motherboard that works very well except a weird thing that I just noticed.
Before swapping motherboards I was using two genuine Lenovo 3 cell batteries and one 9 cell no-name battery. The latter was working even better than the original ones and regularly gave me 9/10 hours uptime.

After the motherboard swap the small batteries kept working normally, but the laptop won't power on with the big battery. Moreover, if I switch on the laptop on AC with no battery, as I plug in the big battery the laptop dies immediately.

When the laptop is off and plugged in, with the big battery in, the battery led is on and shows the battery as being charged, but if I turn on the laptop, the leds light up for a second or so and then it dies. The same goes if I turn on the laptop unplugged with the big battery in.

Quite strange, isn't it? Do you have any idea of what it could be and what I could do?

[RealBlackStuff]

It's definitely due to it being a knock-off.
Can you compare the BIOS settings between x200s and x201s?
(hook up some RAM, keyboard, 3-cell battery and external monitor to the x200s mobo).

Did that 9-cell work with the X201s before the swap?

What did you do after the motherboard swap:
- reuse the same hard disk (with the same OS)?
- use a different HD but cloned the OS?
- did you change/reinstall Windows?

[harryK]

It's definitely due to it being a knock-off.
Can you compare the BIOS settings between x200s and x201s?
(hook up some RAM, keyboard, 3-cell battery and external monitor to the x200s mobo).

Did that 9-cell work with the X201s before the swap?

What did you do after the motherboard swap:
- reuse the same hard disk (with the same OS)?
- use a different HD but cloned the OS?
- did you change/reinstall Windows?

Hi RBS, thanks for answering me.

I am also inclined to think that it is due to the battery being non-original. But I have been using this battery *the day before* replacing the motherboard and it was working just fine.

The rest of the hardware is exactly the same. I bought an x201s motherboard, put it in my x200s case, and used it with the existing power adapter, ram, ssd, wlan card and os (Linux). Not a glitch.

I don't have the means to test the battery with the old motherboard or with another x201s because I don't have any spare hardware, also checking the bios settings would require me swapping mobos again, but I'm quite sure that the settings are more or less the same.

My symptoms are exactly the same of this guy's --> http://forums.lenovo.com/t5/Lenovo-3000 ... d-p/215130 except that mine only show up with this particular battery.

One difference between the big battery and the small ones is the different output voltage, my motherboard could be sensitive to this, I don't know... :-/

[RealBlackStuff]

I have been using this battery *the day before* replacing the motherboard

In other words: OK in the X200s, NOK in the X201s.
Only options:
- sell it together with your X200s motherboard.
- buy another X200s/X201s with bad motherboard and put the X200s mobo and 9-cell battery in there.