Blade 14 (2023) – Battery detected but work only with charger (Worked well before, issue after unmount/remount)

Question

Context	Razer Blade 14 (2021, RZ09-0370; / RTX 3070).			Full teardown to repaste / clean.			Re-assembled without visible damage, but now:			Windows still shows the battery (percentage looks correct).						AC LED is on, percentage never increases.						Laptop shuts off instantly when the AC adapter is pulled.					Swapped in a brand-new battery → identical behaviour.	 	It was working well before the unmount. I did it very carefully, I don’t understand what is going on. MeasurementsTest point			Voltage (battery connected, AC unplugged)		Down-stream pad of Fuse “X” (after battery connector)			≈ 15 V		Every pin on the two “30030L” 8-pin devices (battery FET pair)			0 V		R005 vertical shunt (battery current sense)			0 V		R005 horizontal shunt (charger current sense)			0 V (expected with charger unplugged)		 Ground probe is screwed to a chassis screw; readings repeated several times.What I’ve Tried	Visual inspection: battery cable, Fuse X, traces all look fine.			Hard EC reset			Disconnect battery and charger.						Unplug CMOS coin cell.						Hold POWER 30 s.						Re-attach CMOS cell, then battery → no change, FETs still show 0 V.					Updated BIOS and EC with official USB package – no effect.	Questions / Possible Causes	Ship-mode stuck?	– Why doesn’t the drain of the first FET pick up the 15 V that’s on Fuse X? (I believe I’m on the correct pins: the two 30030L chips just left of the vertical R005.)			Blown battery FETs?	– Full part number should be FDMC8030L / AON6030?	– If one is bad, do I need to replace both devices?			Anyone have a boardview / schematic for the Blade 14 R3 to confirm the exact role of these 30030Ls?			Any other angles (DC3901x charge controller, hidden trace damage, etc.) I should check?	 Some pictures : Maybe I can’t identify the mosfets..

salandertech · Answer

Did you ever find a solution for this? I have the exact same model and are having the exact same issues right now, frantically trying to find a solution

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