Tablet Battery what is White, Red, Black cable, can we connect charge cable direct to motherboard

desgiend like what way, like 2596 ?

Ok so I removed the battery and connected the LM2596 module buck converter to the motherboard..

I get 3.7v to the module and motherboard.. but tablet is not starting up.. the red LED is blinking in tab.. which means Tablet is indicating a low battery level...

Is there any way I can fool tablet to think battery is connected..

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MiteshR said:

Which tablet are you using for this project?

Click to expand...

Windows 10 unbranded ub15ms10 ..


Is there any way.. i can fool the motherboard thinking that battery is attached.. like some people use capacitor

so i removed the circuit from battery and it looks like a ling thin circuit, i connected the circuit to the board again without battery and connected the power cable to + and and -

but again nothing works, i checked with the multimeter that circuit is getting 3.7 volt but from there to motherboard, no power.

why

circuit is working fine, then i connected the power cable directly to the motherboard without the circuit, it is getting 3.7 and i increased it to 4.3 volt but still no power

i will try with new usb cable, again
ok, so removed the circuit from the battery and it look like this one





i tried several other ways, like connecting the charger output directly to the motherboard, positive and negative, but no sucess

then i tried a 10k resistor and 10k thermistor and connected negative and white , ..

see

here i connected 10k resistor





i tried with 10k thermistor





then i connected the circuit back to its original connection but wihout the battery and sent power from charge to positive and negative on circuit





i tried the buck converter also,

but its maximum output i could increase to 4.3 volt only becuae it was connected to 5V charger





what else i can try

i think i will change the power cable

using a buck converter with 5V charger is limiting the output to 4.39V max

i am thinking to connect 5V directly from the charger with a new thick cable ?

any suggestion