I bought a 500LE last week and it came with the recargable battery & battery clip and with an offer for a free AC charger, and Mapsend Topo 3D for $9.99, all this for $199.99.
The unit gave about 5 hours on 3 AAA batterys (I will use AAA's for back-up if the rechargable runs out of juice) Also works in my house, I can say it is a great unit.
Having a ball learning how to use it.