Buy.com still offers the Energizer Energi To Go Battery Charger, model no. IPODPOWR2, for $9.99 with free shipping. It’s the lowest total price we could find by $20 and the best we’ve seen for an emergency cell phone charger for the iPhone and iPod. This battery charger uses two AA batteries to charge the iPhone 3G, iPod touch, iPod classic, iPod nano, and others. Two Energizer Ultimate Lithium AA batteries are included.