Nitrux Icon's Battery indicator symbol is incorrect - how do I fix this?

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http://askubuntu.com – I just have installed Ubuntu 12.10 (fresh new installation) and installed an icon theme pack - Nitrux Icons - and everything is fine, except the battery icon in the system tray. Here's the icon with the charge adapter unplugged: And it looks fine - that's the real icon. But when I plug the charger it shows as: Thats not the real icon. Also, with other themes like Faenza - it shows the same icon when the charger is plugged in. (HowTos)