I'm new to Arduino and I have a question about module SIM800L. I don't know how to calculate the power consumption to see how many days my 1000mAh Li-Po battery can supply for the module.
I need the module in some kind of sleep mode in almost 24/24h. It just needs to send one message per day. I found some documents say that in sleep mode it's 1mA and stand by mode is 18mA. I don't know what is "stand by" mode and how much the module needs to send a message (how many mA and send in how many seconds?)
I really need your help on this Thank you very much. Sorry for my bad English, It's not my nature language.
I don't know how to calculate the power consumption to see how many days my 1000mAh Li-Po battery can supply for the module.
Well 1,000 mAh tells me that in theory it will deliver 1 Amp for 1 hour, 2 Amps for 1/2 hour, 1/2 Amp for 2 hours or 1/4 Amp for 4 hours. See how this works. That is the theory but real life figure smaller numbers. The 1,000 mAh is based on a brand new battery and over it's life the battery will not meet that specification.
The only way to know exactly what your load is would be to measure it including while sending a message. Take a worst case scenario and run with it. Just as an example if I find worst case is 50 mA and I have a 1000 mAh battery I can say 1 / ..050 = 20 so 20 hours of actual on time. Anyway the best determination is made by measuring current in various modes, derive a worst case number and run with it.
Thank you very much. Sorry for my bad English, It's not my nature language.