New 42Wh Battery WDX0R for Dell Latitude 3390 2-in-1 P69G001 3379 2-in-1 P69G001
42Wh 11.4V YRDD6. Always use an original adapter, low quality adapter will kill the battery quickly. DrLappy, based in Hong Kong, has been in the laptop parts sourcing field for 12 years.