May I ask? Battery question

[ppvout.s0]

Now days battery have many sensor lines and + and -.

I have a battery at 0.1v when I plug in it the DC powersupply at its requested voltage. The battery won't draw any Amps and stays at 0 Amp consumption.

How do I make the battery hungry to be charged by a DC powersupply?

 

[2informaticos]

The battery has an internal BMS.
Apart of SCL/SDA lines, has an enable pin; SYS_DETECT_L usually.
The internal charge/discharge MOSFETs are controlled by BMS, which requires to talk with an external power management chip (like SMC).

 

[ppvout.s0]

so, its impossible to charge up a battery with DC Powersupply, or I have to find SYS_DETECT_L and then the battery would alow charing on a DC Powersupply?

 

[2informaticos]

You can buy some interface to charge/discharge laptop batteries.
Many available on Internet, not really cheap.