x20 Battery replacement

[Przemek]

Hello everyone,

CMOS battery and Lithium ION akku in my old TP x20 (2662-11G) died yesterday. I was lookig for brand new original parts, but here, in Poland, couldn't find them.

Original CMOS: FRU 02K6715 or 02K6716. Found only:
FRU P/N: 02K7078, 02K6572, 92P0991, 92P0986
IBM P/N: 08K8050, 02K6541, 02K7087, 02K7075, 08K8216

Original akku: FRU 02K6652, NOM 14.4V, 1.6 Ah
Whitenergy's replacement has different default voltage (10.8 V).

Is it possible to buy listed parts? Will everything be working fine?


Best regards,
Przemek

edit: please move my topic to the right section

[Harryc]

The CMOS batteries haven't fundamentally changed since the X20 so yes you can use those other FRU's. As far as the replacement battery, I have never dealt with Whitenergy so I can't comment. I would be wary of voltage differences though.

[automobus]

The X20 series had both 4-cell and 6-cell batteries.
4×3.6=14.4 V
3×3.6=10.8 V (two parallel groups of three)

[Przemek]

So what should I do to put 10.8V battery? - change mobo?

[automobus]

No need to change anything. Any X20 ThinkPad can use any X20 battery. The only difference is it will run longer with the 6-cell, and it will be more heavy.

[Przemek]

I think that's last question. I have 56W ac adapter and I'm wondering if it's enough to charge new battery (capacity 4800 mAh).

[automobus]

Yes, it will charge and work just fine. A bigger power supply (72 W) will not make any difference.

[Przemek]

Thanks once again

[Przemek]

Well, purchased a brand new battery 6-cell, 4400 mAh yesterday. When I plug the AC adapter, Power Management shows that charging is going to take more than 4 hours to fully charged, battery is charged to 77% then.




Now, battery is fully charged. I think that was some kind of issue with software.
2.50h remaining when wifi is turned on.