Catherine, The battery has to recharge if you're going to use it without electricity. Here is the information from the optacon 2 manual: A. Charging the Battery NOTE: Use only the CANON CH-50 charger provided with the Optacon II. Any other charger may damage the Optacon II or charger and voids the warranty. The charger is available in several voltages (100,120,230,240 V). Before traveling in other countries, consult TSI about available chargers for different voltages. Page VII - 2 Optacon II User Manual 1. Removing the battery pack: Reach behind the battery pack to the rear panel of the Optacon II and push down on the catch; at the same time, push the battery towards the back of the unit. The battery pack will slide free from the top surface of the Optacon II. Notice that the battery pack has two guide pins extending from the edge of the pack; they indicate the side that goes in first when reinstalling the battery. When the pack is removed from the Optacon II the metal battery contacts are exposed on the top surface. Either install the other battery pack or the battery cover to protect the terminal contacts. 2. Installing the charged auxiliary battery pack: Slide the battery pack in place on the top surface of the Optacon II, reversing the order of the removal process described above; hold down the release catch and slide the battery pack in. 3. Installing the discharged battery pack into the battery charger adaptor: The battery pack installs in the charger adaptor in the same way as into the main body of the Optacon II. Position it over the terminals and slide into place. Figure 9 Battery Installed in Charger Adaptor BATTERY CHARGER ADAPTOR Optacon II User Manual Page VII - 3 4. Charging the battery: insert the battery to be charged into the battery charger adaptor and plug the Canon CH-50 charger into the AC outlet. Then, plug the charger output into the battery charger adaptor. Fully charge the battery for 14 hours. It is good practice to fully discharge and recharge each battery periodically to maintain maximum battery efficiency. 5. Important: use only the battery charger adaptor to charge the battery. The battery will not charge on the Optacon II. (end of section from manual) In other words, besides the AC adapter, there are three pieces: the battery pack, the battery charger adapter, and the battery terminal cover. The terminal cover stays on top of the optacon when there is no battery and when you use the machine on AC power. The battery charger adapter is a piece that the battery pack fits onto when it is being charged. The AC adapter plugs either into the optacon, or into the charger adapter. When the battery is charging, it is not sitting on the optacon; it is on the charger adapter. I hope this clears things up. Mary To unsubscribe at any time, just send a message to: optacon-l-request@xxxxxxxxxxxxx with the word "unsubscribe" (without the quotes) in the message subject. Tell your friends about the list. They can subscribe by sending a message to: optacon-l-request@xxxxxxxxxxxxx with the word "subscribe" (without the quotes) in the message subject.