People, I'm looking at power sources for a relatively small Bluetooth speaker build and noticed these
18W Power Bank, ROMOSS 20000mAh Portable Charger, with 3-Port Charge and Recharge, External Battery Pack Fast Charge for Nintendo Switch iPhone iPad Samsung Galaxy Google Pixel and More, White: Amazon.com.au: Electronics
Not knowing an awful lot about these, I cannot see why one couldn't power an 12v 2*30w 1*50w 2.1ch class d amp and a Bluetooth board? Just unsure if there circuit in the power bank would prevent this at all, or when plugged in if it would prevent use of the speaker. The speakers I was looking at were 2* 2in full range drivers and a 3.5inch mid bass in a .1cuft box so I don't think it will I will be pushing the limits of.rbe board or drivers.
Price also seems to be cheaper that buying the under/over charge circuit and 3-4 18650 batteries
Any advice from the experts out there that may have tried or looked into this before?
18W Power Bank, ROMOSS 20000mAh Portable Charger, with 3-Port Charge and Recharge, External Battery Pack Fast Charge for Nintendo Switch iPhone iPad Samsung Galaxy Google Pixel and More, White: Amazon.com.au: Electronics
Not knowing an awful lot about these, I cannot see why one couldn't power an 12v 2*30w 1*50w 2.1ch class d amp and a Bluetooth board? Just unsure if there circuit in the power bank would prevent this at all, or when plugged in if it would prevent use of the speaker. The speakers I was looking at were 2* 2in full range drivers and a 3.5inch mid bass in a .1cuft box so I don't think it will I will be pushing the limits of.rbe board or drivers.
Price also seems to be cheaper that buying the under/over charge circuit and 3-4 18650 batteries
Any advice from the experts out there that may have tried or looked into this before?
Only delivers 1.5A at 12v which wouldn't really be enough to drive that amp properly. Also you'll need the right circuitry to tell the USB port that it needs to run at 12v.
Ok, so right circuitry on the existing board, or more a step down/booster arrangement being added on afterwards
I think this is the sort of thing. It tells the USB PD circuit to use the selected voltage instead of just the standard 5v
NZ$ 7.45 | Type-C USB-C PD2.0 PD3.0 to DC Spoof Scam Fast Charge Trigger Polling Detector USB-PD Notebook Power Supply Change Board Module
AliExpress
I think you'll be better off hacking in a step up converter to the battery directly
NZ$ 7.45 | Type-C USB-C PD2.0 PD3.0 to DC Spoof Scam Fast Charge Trigger Polling Detector USB-PD Notebook Power Supply Change Board Module
AliExpress
I think you'll be better off hacking in a step up converter to the battery directly