And I've been using it for at least the past 20 minutes and the % has gone up only 2%
Hello there, Scilbrith.
For understanding charging functionality, the following Knowledge Base article has some great recommendations on how to maximize your charging time:
iPhone and iPod touch: Charging the battery
One thing of note:
If you charge the battery while syncing or using the device, it might take longer to charge.
Thanks for reaching out to Apple Support Communities.
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