Here's another battery backup question! Consider yourself warned!
I've been trying to read up on battery power backup for a couple of weeks now, and I found information on battery charging modules (like 18650) that connect to li-ion batteries which are then connected to the load to supply power in case of main power failure.
The issue for me is that the batteries and charging modules I came across don't handle as many amps as I would like.
I am using a couple of car lock actuators that use 12V and about 5 amps each, in addition to the amp draw of other components (really not as much of a factor when compared to the 5 amp needed by the actuator).
So here's what I'm hoping someone could help me with:
What is the best type of battery to use? And has anyone used a good battery charging module that can handle 5 or so amps? Power failure is not common here so the battery backup solution will not be used much, and when required, will only be needed for a short period of time.
The battery itself isn't too much of an issue, I can get a 12v lead acid battery with 5ah, but I need a qualified charging module for the job. Any recommendations?
Also, I would need a couple of diodes to ensure the proper flow of electricity - what would be the best diodes to use? I know I have to look at max voltage flow (+ buffer) and max amp, so would something around 18v and 6amps work? Do I need to allow for higher amps?
Your help would be greatly appreciated!.