iEGrow via Amazon offers its iEGrow 2-Bay LCD Smart Li-ion Battery Charger for $16.99. Coupon code "MVPCC99B" drops it to $8.49. Plus, Prime members bag free shipping. That's a buck under last week's mention, $11 off, and the lowest price we've seen. It recharges 3.7-volt lithium-ion batteries via USB and comes with a micro-USB cable. Deal ends May 25.