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Maybe 4 hours if your lucky. Battery does kinda suck. But what can you expect for audio and video.
Sorry, there was a problem. Please try again later.Hi - The parent unit of the VTech RM5764HD runs on rechargeable battery or AC power. To continuously monitor your baby, keep the parent unit connected to AC power. With the battery alone, the parent unit can cordlessly run for a short time only. Thank you, -VTech Support
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