Yugster offers the VTech Rechargeable Battery Kit for free plus $5 for shipping. (NeweggFlash charges the same.) That's tied with our mention from a week ago and the lowest total price we could find by $2. The charger works with AA and AAA batteries and features LED status indicators. Four rechargeable Ni-MH AA batteries are included.

Note: The countdown timer on the product page does not reflect an actual expiration time and resets daily.

Update: It's now sold out at Yugster; however, NeweggFlash still offers it for $5 with free shipping.