“thanks and only if you know: Is there a model that just uses USB power without a rechargeable battery? I want one on my TV all the time.”
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NS-HPBTAA23 is built in battery. While charging by TV USB A power, the power is directly provided by TV power instead of from NS-HPBTAA23 battery. NS-HPBTAA23 is the best recommend unit for you.
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