Check all the traces for battery connector.
Still looks like bad battery...
Still looks like bad battery...
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820-3787 Burning Batteries
- Thread starter brunomotter
- Start date
brunomotter
Member
All traces look good... Don't know what to do anymore... I think I will wait for another machine of the same kind arrive here and test the new battery on another computer to see if it burns the battery too...
brunomotter
Member
I measured voltage on burned battery and it measures 12.2V, the same voltage measured on new battery the seller sent me. This is measured not on the connector itself but on the contacts on the battery controller board. Directly on the connector both batteries measure 2.33V
Battery is not enabled "on air".
SYS_DETECT_L should be pulled-down, through R7050.
Post exact voltages for Q7155, only battery connected.
SYS_DETECT_L should be pulled-down, through R7050.
Post exact voltages for Q7155, only battery connected.
brunomotter
Member
Q7155:
Pin1 = 1.675V
Pin2 = 1,675V
Pin3 = 1,6767V
Pin4 = 0,598V
Pin5 = 1,677V
Pin1 = 1.675V
Pin2 = 1,675V
Pin3 = 1,6767V
Pin4 = 0,598V
Pin5 = 1,677V
Crappy battery, or not good contact for SYS_DETECT_L line.
Also possible battery processor got blocked for some reason.
I'm sure elements are good, as you have good voltage on them.
But internal processor settled up an error flag, because of short, or overcurrent detected.
In few words only, bad cheap chinese battery...
Also possible battery processor got blocked for some reason.
I'm sure elements are good, as you have good voltage on them.
But internal processor settled up an error flag, because of short, or overcurrent detected.
In few words only, bad cheap chinese battery...
brunomotter
Member
Not so cheap LOL! It was expensive actually... Should I try the new one then?
brunomotter
Member
Well, in the end, as ALWAYS, you were ABSOLUTELY right! I got bad luck and got 3 consecutive bad batteries. The last one the seller sent me is working like a charm now! Thanks for all the help. Mod can close the topic!