I have a Gigabyte R3 laptop, with a GNC-C30 battery pack in it.
I actually thought I sold it, but turns out I had $800 worth of laptop sitting in the corner for 3 years....... oh well, it's PERFECT for my laptop needs, so I'm going to use it.
Plug it in, "Plugged in, CHARGING" left it overnight, still 0%...... Damn....
Cracked open the battery pack, and sure enough, we're reading about 5v across the entire 3 cell pack.... yeah, she dead.
Luckily, having a bit of battery nerd in me, thanks to my Quadcopter obsession;
I know these are Litium ION, not Lithium POLYMER, so much less likely to actually be bricked, so long as they're still above 0v (and rarely, a 0v will revive too).
So my laptop battery knowledge told me "The safety chip in the battery will be blocking the charge".
Voltage is too low.
I managed to find the main cell that was suuuuper low (1.1v) and bump charge it up to about 2.9v with my hobby charger, at 0.25C (200mah).
From there, I put the battery charger across the entire battery pack (pre-chip), and dumped a nice 2Ah into it, at 0.5C (2A)
Cells stayed icy cold, no magic smoke, and voltage sag between charge and rest was about 0.3v.
I've probably lost a little capacity, but all the cells are clearly holding charge!
Its now at 11v (and I'd know if I'd overcharged 2 cells that much, thanks to fire :P)
Here's the kicker, The laptops behavior hasn't changed!
STILL says "0% - Charging" and despite dumping 2.5Ah into a 4200Mah battery, the laptop is still so powerless it drops its CMOS settings when I remove AC.
These batteries are extremely expensive ($150+), so I'm trying to avoid replacing it when I know it can hold a charge just fine.
From research, it looks to be a TI BQ20Z45 Charge Controller chip.
and once a FAILURE flag is tripped, it blocks everything.
I'm going to look into how to reset this chip.
Unless anyone has any bright ideas!
Looks like those chips get custom firmware based on device.... rats....
I've just messaged ROSCOSCITY to see if he can source me a battery or a non-bricked charge board.
Sometimes it's nice having a Gigabyte Rep around eh? :P
Edited by Master_Scythe, 07 February 2018 - 12:47 PM.