Hi,
I feel this should be an easy problem but I haven't found anything.
I am using an ESP32 in a remote application and it needs to last 5 years and to do this I need to utilize the sleep mode which uses 20 micro amps. I have a D-cell battery of 20 Ah but it is 3.7V and I need 5-6V for the PCB I am using. I can't use a step down because it will use at least 1mA during sleep mode.
Does anyone know of a high capacity battery option for 5-6V? I only have room for a d-cell battery or maybe at a squeeze 2 d-cells.
I feel this should be an easy problem but I haven't found anything.
I am using an ESP32 in a remote application and it needs to last 5 years and to do this I need to utilize the sleep mode which uses 20 micro amps. I have a D-cell battery of 20 Ah but it is 3.7V and I need 5-6V for the PCB I am using. I can't use a step down because it will use at least 1mA during sleep mode.
Does anyone know of a high capacity battery option for 5-6V? I only have room for a d-cell battery or maybe at a squeeze 2 d-cells.