bestsystem
Newly Enlightened
- Joined
- Sep 28, 2011
- Messages
- 61
Recalling a few discharge voltage curves from various 18650 cells from LG, samsung and panasonic, they all have sightly different discharge curves.
High capacity cells from Panasonic have a more linear discharge characteristic which voltage continuously decrease with state of charge. It also appears that Panasonic is extending the capacity by allowing deeper discharge voltage. Unfortunately, many of my appliances like USB power bank, better flashlights and camera have some internal protection that will shut down itself at say 3.2-3.0V, so I reckon panasonic cells are often not suitable.
On the other hand some old formula (cobalt) may deliver near the same (gauged by running a camera, number of shots) runtime as a 3400mah.
So what is your opinion?
High capacity cells from Panasonic have a more linear discharge characteristic which voltage continuously decrease with state of charge. It also appears that Panasonic is extending the capacity by allowing deeper discharge voltage. Unfortunately, many of my appliances like USB power bank, better flashlights and camera have some internal protection that will shut down itself at say 3.2-3.0V, so I reckon panasonic cells are often not suitable.
On the other hand some old formula (cobalt) may deliver near the same (gauged by running a camera, number of shots) runtime as a 3400mah.
So what is your opinion?