Battery for IBM Lenovo Thinkpad R61 R61i T61 T400 R400 10.8V 6600mAh (Electronics)
No miracle for the price. This battery is really unstable, displaying a rather incoherent autonomy (4h30 after a full charge, in practice less than 2 hours). Once it remains about 30 min., It discharges in a wink ... My original battery (4800 mAh), i