Small Batteries?
- Thread starter Demonic69
- Start date
Am now thinking about 3x CR2032 3v batteries in vert holders.
Think this would work?
Would 3x3v@200mAh compare to 1x9v@200mAh?
Think this would work?
Would 3x3v@200mAh compare to 1x9v@200mAh?
Yes they would be 9v@200mah but i'm not too sure on the discharge rate of coin cell batteries, good rechargables are rated at 3C which means you can discharge them at 3 times their capacity (250mah could provide 750ma or 0.75A).Demonic69 said:
Hopefully the board won't need that muchStrawb said:
What about the discharge on normal non-rechargeable batteries?
It's not the board it's the noid that takes the power.
Just looked up the spec on CR2032 batteries, they can supply up to 2ma and at that discharge rate the capacity drops to 75mah.
Most noids are rated at 6v, 0.25W to 0.5W so you'll need 41ma to 84ma (that's at 6v, at 9v it will be 50% higher) just for the noid then whatever the board takes which i guess will be 10ma to 30ma depending on board and LED brightness etc.
So if we go on the min values you'll be needing 75 CR2032 batteries
*edit* Looking at normal PP3 duracell procell's they can supply up to 1000ma.
Just looked up the spec on CR2032 batteries, they can supply up to 2ma and at that discharge rate the capacity drops to 75mah.
Most noids are rated at 6v, 0.25W to 0.5W so you'll need 41ma to 84ma (that's at 6v, at 9v it will be 50% higher) just for the noid then whatever the board takes which i guess will be 10ma to 30ma depending on board and LED brightness etc.
So if we go on the min values you'll be needing 75 CR2032 batteries
*edit* Looking at normal PP3 duracell procell's they can supply up to 1000ma.