SECTION 2 " Hand-Held Computer Operation6200 Hand-Held Computer 2-7Figure 2 4Installing Rechargeable Main Battery Pack2. With the battery pack contacts facing into the terminal and withthe flat and curved portions aligned with the battery compart-ment opening, slide the battery pack into the compartment. Thebattery compartment contains a label showing the proper posi-tioning of the pack with markings for placement of the positiveand negative contacts.The nickel cadmium (NiCd) or nickel metal hydride (NiMh) batterypacks have three exposed electrical contacts. The two round contactsare for the positive and negative terminals of the battery pack, whilethe round surface contact is a switch plate that completes the chargingcircuit.3. Reinstall the door and turn the latch knob 1/4-turn clockwise tolock it.