Sometimes, getting a battery alert at 20% on your iPhone isn’t enough.  For those of us that want more control over our battery alerts, there’s PowerAlerter.

PowerAlerter is a Cydia tweak that gives you full control over visual, audio and haptic notifications for your iPhone’s battery. With PowerAlerter, you’ll never have to worry about forgetting to plug your iPhone into the charger again…

PowerAlerter allows you to change the percentage that you want an audio, visual, or vibration (or any combination of the three) notification of your battery status. You can change the alert sound and also make sure PowerAlerter respects your iPhone’s “silent mode” when you’re at work.

You can can go a little more hands-on with PowerAlerter and trigger a few actions. You can set your iPhone to turn off at a specific battery percentage (I wouldn’t recommend anything over 10%), or disable Wi-Fi at a certain percentage.

Pick up PowerAlerter for $1.50 in the Cydia store. There’s also a nifty SBSettings toggle for PowerAlerter.

What do you think? Do you think PowerAlerter is useful? Is it worth the $1.50 price tag?