Powering nRF51822 with two alkaline batteries

[Mario Ribeiro]

Hi,

I'm developing a device that will be powered by two AAA alkaline batteries.

Since the operating voltage of nRF51822 is 1.8 to 3.6V I was considering to connect them (in series, so I get ~3V, theoretically max 3.3V when fully charged) directly to VDD, so I can avoid an extra BOM cost with a LDO/DCDC regulator. Do you see any inconvenient in this approach?

Assume all external peripherals (e.g. EEPROM) also operate in the same operating voltage (1.8-3.3V) or in some cases a level shifter is used.

[Johannes Lorenz]

Hi Mario,

in this blog bitknitting.wordpress.com/.../ you find some interesting information about batteries and the nRF.

HTH Johannes