Z
z_andyg
Guest
I just designed and built myself a battery analyser (soon to be published as a open source/hardware project) and have been testing my NP-E3 battery pack used for Canon 1-series cameras.
The battery pack has 10 AA NiMh cells. I set the discharge to 200mA and plotted the voltage over time terminated the discharge at 10V (1.0V/cell x 10). This is what come up (mV vs mAh):
Does anyone know if the kink is a characteristic of cell reversal?
The cells are inaccessible without cracking open the pack so I haven't been able to probe the cell voltages during discharge to be sure.
Has any one see this type of discharge curve?
I tested, 2 packs and they both seem to exhibit this, around the 10-11V mark.
I pretty sure it isn't to do with my design and it is the actual battery voltage being shown here.
Thanks.
The battery pack has 10 AA NiMh cells. I set the discharge to 200mA and plotted the voltage over time terminated the discharge at 10V (1.0V/cell x 10). This is what come up (mV vs mAh):
Does anyone know if the kink is a characteristic of cell reversal?
The cells are inaccessible without cracking open the pack so I haven't been able to probe the cell voltages during discharge to be sure.
Has any one see this type of discharge curve?
I tested, 2 packs and they both seem to exhibit this, around the 10-11V mark.
I pretty sure it isn't to do with my design and it is the actual battery voltage being shown here.
Thanks.
