This is the cable that connects the system battery to the motherboard of the for Dell Inspiron 5402 and 5502 laptops.

for Dell Laptops,Inspiron 5402/5502
for Dell P/N: 581XK, 0581XK

P/N found on cable:
WST MKB N14 BTY cable
450.0KK04.0001
450.0KK04.0