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Question

Fitted the T520 with a slice battery. The laptop is then put into sleep mode with slice battery at 8% and laptop battery at 80% charge. I booted up the system and found that the power had been lost and the machine is booted up from cold mode, causing me to lose previous documents / windows opened before the laptop went into sleep mode.

Answer

Issue has been solved via updating the BIOS and Power Manager. Follow the links provided below to update the driver

 

BIOS: 1.39 here and above

 

Power Manager: 3.64 here and above.

Power Management: 1.64 here and above. 

 

Slice battery firmware update

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