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Permalink Reply by JL on January 9, 2017 at 2:59am

The ARTEC amp boards will operate at anywhere from 12v down to 5v, you could power the card off the phone battery....

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Permalink Reply by Timothy Hunter on January 9, 2017 at 11:07pm

are these 3.7V LiPo batteries? if so you can buy premade boost converters and also charge circuits on ebay from china for a couple of bucks. 

I have bought some 3W amp boards that run off 5V. so i went out and bought a cheap USB battery bank to power it. it has a 18650 LiPo battery and a combined charge boost board. powering this amp board from the USB output can be a problem depending on the board used. a dedicated board should be ok but the battery bank board i have wont power if the data lines are not set to a certain voltage that i cant figure out...lol

so i got another cheap chinese one and it doesnt care whats hooked to it.. it powers the amp fine. the amp board was 5 for $5 on ebay the battery bank cost me $10 and i have just recieved in the mail today a preamp board which was about $1.30.

so yes you can use the iphone batteries if you can get a charge board for each bat and then a buck/boost converter to give the output voltage you need.

this is the amp board, its about 20mm x 20mm or 3/4"x 3/4" it is also 2 channel i am hooking it up to 2 small speakers and giving the input to both sides. supposed to be class D 3W

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Permalink Reply by Robert Varcoe on January 9, 2017 at 11:19pm

will try tnx

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