Two batteries packs one 5v 2A load

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42

These.
However you must make sure that BOTH are never on at the same time.
I would put a 5A fuse at the output of each switch

43

thanks :slight_smile:

and those would be all components I need ?

44

You need an Arduino to measure the current and operate the switches

45

I have a uno with integrated wifi

46

That's fine
You only need one analog pin to measure the current and two digital pins to control the switches.
You will also need a 2200uF capacitor with a voltage rating of 10V or more (16V, 25V, 50V)
Put the capacitor at the point where the two switches connect. This will keep the voltage from drooping when you switch from one battery to the other

47

I lost your post with the fuse value sorry.... can you tell me that again ?

thanks :slight_smile:

48

Accidents can happen so it's a good idea to have fuses.
A 5A fuse would be good.
See diagram below

image
image718×436 2.77 KB

49

THANK YOU VERY MUCH :slight_smile:

50

what if I have a couple of 1000uF 10V 16V 25V 50V capacitors ?

51

Two 1000uF in parallel will be OK if they are the same voltage rating.

52

perfect, those puppies are same voltage rating same brand and same model :slight_smile:

53

I am waiting for the last components to arrive by courier then I will publish the fritzing file for review

thank you :slight_smile:

54

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