“dv7-1275dx Compatibiliy and 12 Cell option 1) Is this battery, Lbhp25aa, compatible with the HP dv7-1275dx model? It's not listed in the supported series, but it matches the battery series (HSTNN-C50C and HSTNN-Q35C) and has the correct voltage, 14.4. 2) Will my factory charger work on this battery? 3) Also, I am interested in a 12 cell battery. I haven't been able to find any that have 14.4 V. Almost all have 14.8 V. Is the difference ok? Is there an official supported Lenmar 12-cell batter. Thanks in advance!”