Please note that E5520 E5540 E5550 E6320 E6400 can have both 2 pin or 3 pin connector so check your original battery first for comparison (especially the connector!)
2 Pin DELL BIOS CMOS battery ( Please check your connector tip some models can have 3 pin )
Delivery contents:
Technical details:
Please note that in my recent batches of batteries that I order directly from the factory that manufacture them I have requested no printing or writing on the outer plastic shrink wrap since they sometimes came with specific part numbers relating to specific laptop models and I wanted to remove that confusion for customers – The photo is for illustration purposes only