Nutrend via Newegg offers the Battery Tender Junior 12-volt High-Efficiency Battery Charger, model no. 021-0123, bundled with a $5 Newegg gift card for $19.99 with free shipping. Assuming you'll use the credit, that's tied with our mention from two weeks ago and the lowest total price we could find by $9. It's spark-proof and features a 4-step charging program, indicator LEDs, and 12-foot cord.