New iPad’s Battery Works as Intended says Apple

Image via Mashable

After an analysis from video diagnostics and testing firm DisplayMate revealed that the battery of the new iPad reports that it’s fully charged two hours earlier, Apple disputes the firm’s claims. The test was conducted by Dr. Raymond Soneira.

DisplayMate and Dr. Soneira’s Analysis

Last week, Dr. Soneira shared to AppleInsider that Apple’s new iPad continues to draw a significant amount of wattage after displaying that it’s fully charged. He also added that the tablet took almost two hours to finish its actual charging.

His in-depth analysis indicates that the false on-screen battery reading can be a result of a deviated mathematical charge rate model. He further explained:

“The charge indicator on all mobile devices is based on a mathematical model of the charge rates, discharge rates, and recent discharge history of the battery. It uses this information to estimate how much running time is left. It’s actually rather difficult to do because most batteries degrade slowly as they discharge and then tend to surprise with a precipitous decline near the end.”

In Dr. Soneira’s test, he found out that the new iPad continues to draw ten watts of electricity after reporting that it’s 100% charged. It then began to reduce power for another ten minutes until a precipitous decline in power draw indicated that the charging cycle has ended.

Ceated by Design

In response to the battery analysis made last week by DisplayMate, Apple’s Vice President of Product Marketing Michael Tchao shared to All Things D on March 27 that the premature full-charge report was created that way. According to him, all iOS devices including the new iPad will display that they are 100% charged before they actually reach that state. And when the device is still plugged, it will continue the charge-discharged circuitry until it’s unplugged.

“That circuitry is designed so you can keep your device plugged as long as you would like. It’s a great feature that’s always been in iOS.”

Furthermore, Apple’s battery display was simplified so that users won’t be confused by the continuous charge-discharged cycle while the device is still plugged. The company also reiterated that owners can still maximize their devices’ potential battery life.


Apple sports that their new iPad has a ten-hour battery life, despite the inclusion of the power-hungry A5X quad-core graphics processor and the Retina Display. Meanwhile, the Wi-Fi + 4G LTE model offers up to nine hours of power when using a wireless network. The latest tablet that runs on Verizon network can also serve as a mobile hotspot, letting users share its high-speed data connection to other devices for more than 24 hours.

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