Buy yourself a spare battery and then you can remove the indicator from battery and cut to fit. Let's just say for instance, your CIO drops his phone into his kids koolaid. You can take the sticker off the battery and place it on the phone. Instant hero!
Not that I would do that (wink wink) you can pick up an OEM battery on ebay for 10 bucks. Warranty now ok and you have a spare battery to boot. If the indicator is red on your battery you will need to buy two.