Ive been reading alot about batteries today, but feel no clearer on the one for me (yes I read all the tutorials).
I need to power
- An arduino
- A stepper motor
For a really long time (a day would be great).
Option 1: Use my Camera battery
I have a canon battery charger and a spare battery, perfect voltage for what I need. But, it's Li-Ion, which ive heard tend to explode. As well as this, ive read that I can't dis-charge them bellow 20% or something like that.
I would like todo this though, here's some specs on the battery:http://www.digiprintuk.com/canon-bp-511511a512522535-p-874.html
Option 2: LiFePO4 Li-Ion http://www.batteryspace.com/index.asp?PageAction=VIEWPROD&ProdID=3785
Seem to be less explosive. But I would have to buy a new recharger ect, would be much more expensive overall.
"9V LiFePO4 battery pack must cut-off at 11.4V during charging and 7.5V during discharging" . How would I do this easily?
Option 3: NiCad
Just not sure if these are good for heavy duty applications. It's for a time lapse camera rig, so a 24hour shoot would not be unusual.
So many options!