If you don’t plan on using your ACER TravelMate 8172 notebook for more than six months, ACER recommends that you store the battery with a 60% charge. If you store a battery when it’s fully discharged, it could fall into a deep discharge state, which renders it incapable of holding any charge. Conversely, if you store it fully charged for an extended period of time, the battery may experience some loss of battery capacity, meaning it will have a shorter life. Be sure to store your notebook and battery at the proper temperature.
ACER TravelMate 8172 Battery info:
Battery Type: Li-ion
Voltage: 10.8V or 11.1V
Capacity: 6600mAh / 9Cell
Size: 202.89 x 46.90 x 32.80 mm
Color: White or Blue or Black
You can store a sealed lead acid battery for up to two years. Since all batteries gradually self-discharge over time, it is important to check the voltage and/or specific gravity, and then apply a charge when the battery falls to 70 percent state-of-charge. This is typically the case at 2.07V/cell or 12.42V for a 12V pack. (The specific gravity at 70 percent charge is roughly 1.218.) Some lead acid batteries may have different readings and it is best to check the manufacturer’s instruction manual. Low charge induces sulfation, an oxidation layer on the negative plate that inhibits current flow. Topping charge and/or cycling may restore some of the capacity losses in the early stages of sulfation.
ACER TravelMate 8172T Battery Compatible original Battery Code:
3UR18650-2-T0455 934T2039F 934T2055F
AK.003BT.066 AK.006BT.033 AK.006BT.046
LC.BTP00.086 LC.BTP00.087 LC.BTP00.089
LC.BTP00.090 UM09E31 UM09E32
UM09E36 UM09E51 UM09E56
UM09E70 UM09E71 UM09E75
UM09E78 UMO9E31 UMO9E32
UMO9E36 UMO9E51 UMO9E56
UMO9E70 UMO9E75 UMO9E71
ACER UM09E75 Battery Fit machine:
ACER TravelMate 8172 Series ACER TravelMate 8172G Series ACER TravelMate 8172T Series
ACER TravelMate 8172Z Series
GATEWAY UM09E75 Battery Fit machine:
GATEWAY EC14 Series GATEWAY EC1400 Series GATEWAY EC14D Series
GATEWAY EC18 Series GATEWAY EC18D Series GATEWAY EC18T Series
GATEWAY LT22 Series
When the engine stops at a red light, the battery draws 25–50 amperes of current to feed the lights, ventilators, windshield wipers and other accessories. When the light changes, the battery must have enough charge to crank the engine, which requires an additional 350A. With the engine started again and accelerating to the posted speed limit, the battery begins charging after a 10-second delay.
It may be distractingly glossy, but the ACER BG45-U-300's high-resolution screen proved impressive, with excellent contrast and brightness.
Sound quality is reasonable, resonating from stereo speakers mounted below the ACER BG45-U-300's palm rest.