[General Questions and Answers] Droidriven:
When you installed the new boot animation, I'm assuming that you successfully rebooted the device at least once to test the boot animation before this issue started?

If you have a removable battery, try removing the battery and waiting 30 minutes then re-insert the battery and try booting it.

You may have to charge the battery with some kind of external charger to do the following suggestions. Try to fix this without having to wipe or reflash the device, save those options as last resort.

You can try booting to recovery and flashing the stock boot animation or use adb push to place a copy of the stock boot animation back to its location. Wipe cache and Dalvik/ART cache then reboot.

Boot to custom recovery and select the "wipe" option, then select the "advanced wipe" option, then select system, data, cache and dalvik/ART cache partitions, then wipe those partitions. Then go back to home screen in recovery, then reflash your ROM and Gapps the way you did the first time. This will wipe all of your data but might fix the issue.

Finally, you can boot to download mode and flash the stock firmware for your model number via Odin.

On a side note, the amount of battery drain you were experiencing brings one question to mind.

Did you have Facebook, Facebook Messenger, WhatsApp, Snapchat, Instagram, KiK or any other social media/texting apps installed? If so, that explains the excessive battery usage, especially Facebook and Facebook Messenger. A workaround to the drain caused by these two apps is to uninstall them both and use your mobile browser to view Facebook and your Facebook messages instead. This gets rid of the constant drain of these two apps and also frees up internal storage.

Here is how to set this up to use your browser instead.

Go to Facebook in your browser, get logged in, if you have the option to remember your login information, do it. Then, tap the menu button in your browser, if you have the option to "add to homescreen", select it, if you don't have that option, select the option to create a bookmark instead, then go to your widget settings and add that bookmark to your homescreen as a widget, this allows you to tap it to open Facebook whenever you want just like the app.

Then, in Facebook settings, go to your notifications settings, set it to give you all of your notifications via text or via your Gmail account, if you choose to use Gmail, this will send your notifications to your Gmail app on your device. You will also have to go to your Gmail app then open its settings and set it to give you a notification when an email comes in, this will allow you to still recieve your Facebook and messenger notifications the same as you would if you had the apps. Facebook will end your notifications to Gmail and Gmail will give you a notification in your device's status bar, the two work together.

This setup will allow you to view Facebook the same as the app would without using nearly as much battery as the Facebook app uses.

To view and reply to your Facebook messages, when you are viewing Facebook in your browser, tap the menu button in browser. Then select the "desktop site" option, when it re-loads the page, select the messenger icon at the top of your Facebook page, then you can read and reply to your messages the same as you would in Facebook Messenger but without using nearly as much battery as Facebook Messenger. If you want to make it more convenient than that, you might even be able to find a way to create an another bookmark just for the messages page like you did for the Facebook page and then set this bookmark to automatically load with the "desktop site", this will eliminate the need to select "desktop site" every time you want to check your messages.

If you do it right, you will have two bookmarks on homescreen, one to replace the Facebook app and one to replace Facebook Messenger, all of the same functionality with two less apps installed and two less apps draining battery. You'll have to play with a while to get used to it and set up the way you need it but I suggest you try something like this instead of those apps.

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