Do not use the AC with the battery removed removed, the battery use of the machine will do no good, if your area is not a normal voltage or electricity, you also at work, a sudden power failure, in addition to the work you have done will loseand the machine without the battery to protect the machine may also burn out the motherboard, we have encountered many times, and are all in order to protect the battery and remove the battery to use, the last to board the machine motherboard, a battery can be used from one to two years, and buy a new battery just a few hundred yuan only,but it is cost more than a few hundred yuan if you r notebook motherboard be burned . is it necessary notebook has used in almost but have a new battery? Do not for a sevral hundred battery lose a sevral thousand meachine.

Charge Note:

   It can be charged when the battery is usually discharges to 10%, do not discharge to 0% every time when it is charging. In general shutdown 2-3 hours, 4-5 hours when meachine is work  to full battery.  The IBM's notebook at 95% or less before charging, COMPAQ laptop in about 90% before charging, this designed is to avoid the repeated charge and discharge damage the battery. Requests within a month to conduct a depth of discharge, is discharge to 5% of the time shut down the machine to re-charge "Note - Do not let the battery completely finished and put inside the finished battery power may lead to the battery scrapped off." Usually we use the laptop without having to go remove the battery ,if you do not use the notebok for a long time , please charge the battery to 50% of the store.