Netmastro
Newbie level 1
Dear all,
I recently tryed to change the original battery pack of a texas instruments developer kit :
**broken link removed**
with a smaller one; the original one is made of two AAA battery (1200 mAh).
I ' m not very expert in Electrical engineering so I tryed with a coin battery cr2016 (90 mAh)
with no luck, the MCU didn' t finish neither the boot of the bluetooth interface.
I made a second try with two cr2450 (610mAh) together with a parallel link connection with no luck, the developer kit booted and worked properly but after few minutes died with no power.
Then I checked the Ampere absorption of the kit with a volmeter, discovering it consumes permantly 60 mA, dunno how this information can be translated in mAh.
Proceding in an empiric way, as an ignorant person as me usually do, I bought a bluetooth earphone to extrapolate and use its battery.
I found a little battery with 3.7V and only 60 mAh but with my great surprise it could feed my developer kit for more than 30 minutes.
I' m far away from my goal cause 30 mins aren't enough for my project, but this experience
made myself reflect about the real amount of mAh needed for my hardware.
Can any expert in this field explain me how this things works please or link me some usefull documentation ?
Now I need to understand this argument better to choose the right battery.
Thanks
Netmastro
I recently tryed to change the original battery pack of a texas instruments developer kit :
**broken link removed**
with a smaller one; the original one is made of two AAA battery (1200 mAh).
I ' m not very expert in Electrical engineering so I tryed with a coin battery cr2016 (90 mAh)
with no luck, the MCU didn' t finish neither the boot of the bluetooth interface.
I made a second try with two cr2450 (610mAh) together with a parallel link connection with no luck, the developer kit booted and worked properly but after few minutes died with no power.
Then I checked the Ampere absorption of the kit with a volmeter, discovering it consumes permantly 60 mA, dunno how this information can be translated in mAh.
Proceding in an empiric way, as an ignorant person as me usually do, I bought a bluetooth earphone to extrapolate and use its battery.
I found a little battery with 3.7V and only 60 mAh but with my great surprise it could feed my developer kit for more than 30 minutes.
I' m far away from my goal cause 30 mins aren't enough for my project, but this experience
made myself reflect about the real amount of mAh needed for my hardware.
Can any expert in this field explain me how this things works please or link me some usefull documentation ?
Now I need to understand this argument better to choose the right battery.
Thanks
Netmastro