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2.Remove the battery, and within 3 seconds, install the fresh battery. Your call is still on the line.

Note: If you do not complete Step 2 within 3 seconds, the call disconnects.

IMPORTANT BATTERY TIPS

Use only the supplied charger and use only batteries designed for this phone.

You can purchase additional standard or extended capacity batteries through your local RadioShack store.

When you are not using the charger, disconnect it from power. Do not leave the battery connected to the charger and AC power for more than 24 hours, since overcharg- ing could shorten the battery’s life.

When the battery is not in use, store it uncharged in a cool and dark place.

The battery is a sealed unit with no serviceable parts. Do not try to open the case.

For the best results, be sure the battery is at or near room temperature when you charge it.

A battery can be charged and discharged hundreds of times, but it eventually wears out. When the operating time (talk time and standby time) is noticeably shorter than normal, get a new battery and recycle or properly dispose of the old one.

Do not dispose of batteries in a fire.

Never use any charger or battery that is damaged or worn out.

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Radio Shack CT-503 owner manual Important Battery Tips