I plan to use a old laptop screen as a portable second monitor (sort of like this
)
i have found pre-made circuits like this
http://www.ebay.com.au/itm/4-cells1...938035?hash=item19e26c6933:g:Kt4AAOxy2FZSOxgS
http://www.ebay.com.au/itm/3-cells-...888601?hash=item1c3daddc59:g:4qQAAOxymwBSOxRc
http://www.ebay.com.au/itm/4S-14-8V...285764?hash=item3d23107384:g:P5gAAOSwMtxXsry5
Note: i dont know if the screen will run below 12v so i might need a 4s system and regulate it down thats why i've shown 3 and 4s variants.
i just want to know if these circuits will balance charge the batteries and run the screen separately (so the power source is directly powering the screen not through the batteries, i assume this would lower their life expectancy) while plugged in and automatically change to batteries when unplugged. this seems like a simple question but i cant get my head around the lingo, plus the majority of the sellers have no idea what they are actually selling and i have found they sometimes throw in words like balancing to raise sales. if anyone has any knowledge on these circuits or has used them before and help is appreciated. finally, if there is anyone that knows of a custom circuit that i can make to fix my problem im not apposed to soldering one myself.
thanks in advanced,
SimpleJoe
i have found pre-made circuits like this
http://www.ebay.com.au/itm/4-cells1...938035?hash=item19e26c6933:g:Kt4AAOxy2FZSOxgS
http://www.ebay.com.au/itm/3-cells-...888601?hash=item1c3daddc59:g:4qQAAOxymwBSOxRc
http://www.ebay.com.au/itm/4S-14-8V...285764?hash=item3d23107384:g:P5gAAOSwMtxXsry5
Note: i dont know if the screen will run below 12v so i might need a 4s system and regulate it down thats why i've shown 3 and 4s variants.
i just want to know if these circuits will balance charge the batteries and run the screen separately (so the power source is directly powering the screen not through the batteries, i assume this would lower their life expectancy) while plugged in and automatically change to batteries when unplugged. this seems like a simple question but i cant get my head around the lingo, plus the majority of the sellers have no idea what they are actually selling and i have found they sometimes throw in words like balancing to raise sales. if anyone has any knowledge on these circuits or has used them before and help is appreciated. finally, if there is anyone that knows of a custom circuit that i can make to fix my problem im not apposed to soldering one myself.
thanks in advanced,
SimpleJoe
