Acer Aspire 6920g Laptop battery
New,4400mAh, 14.8V(incompatible with 10.8v), Li-ion, Acer Battery Pack
Chemistry : Li-ion
Voltage : 14.8V(incompatible with 10.8v)
Capacity : 4400mAh
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http://www.power-batteries.net/notebook/acer/aspire-6920-series.html
http://www.laptop-battery-inc.co.uk/laptop-batteries/acer-aspire-6920g-series.htm