Andre Yoskowitz
24 Mar 2012 14:19
Dr. Raymond Soneira of Displaymate Technologies has reported this week that the new iPad's battery gauge is lying when it says "100 percent."
The new iPad holds a significantly larger battery than its predecessor, the iPad 2, and therefore requires many more hours to charge than previous generations.
Soneira says: "I measured the power actually drawn by the AC adapter and found that the new iPad continues to charge for up to 1 hour after it claims to reach 100%. This affects the battery run time if you stop charging when it says 100%."
As stated, if you want full capacity from your new iPad battery, you will need to keep charging the battery for another hour after it says "100 percent" in the meter.
The iPad is certainly not the first device to have a battery gauge which lies but it is likely the most high profile. Apple could potentially fix the issue in future firmware updates.