We've seen iPhone battery extenders before, but the PhoneSuit Primo is a pretty nifty one, only without the jacket-like case. It's compatible with iPhones and iPods, adding three hours' talk time to your 3GS, and a massive 45 hours extra music playback to your iPod.

Each battery, which contains an 800 mAh costs $35, but you can grab a pack of three for a smudge under $90. Is it just me, or does it remind me of those battery packs you used to get with cassette Walkmans once they came with rechargable batteries?

Via Engadget