02-07-2024, 12:11 AM
(This post was last modified: 02-07-2024, 12:15 AM by cabinlab.
Edit Reason: Typos
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(02-03-2024, 12:32 PM)mikesloper Wrote: What voltage range can I power the A4 board with? I am using LifePO4 battery with a voltage range of 11v - 14.7v. Is this OK?
Hey Mike, I've been looking into this question a little more for my own battery use-case as well. This AZ943-1AH-12DEF relay is very close to the ones on the A4. If it's absolutely necessary to test higher voltages, desoldering the originals and replacing with something like that may be an option.
The datasheet says the 12V version can handle 26.8V continuous, with the same Must Operate Voltage (minimum) of 9 that the originals have.
![[Image: 2c722022a55588754f21368c41f765de71998f2e.jpeg]](https://bench.cabinlab.io/uploads/default/original/1X/2c722022a55588754f21368c41f765de71998f2e.jpeg)
It comes in a few versions, including one with upgraded insulation which can dissipate up to 2.4W of coil heat continuously.
I haven't done a super deep dive on it, and there are other variables and variations which may prevent this particular relay from functioning properly in the A4. With a little more research, it might be worth the $0.87 to try the right one out.
My LifePo4 bank doesn't usually go above 14.4V, so I'm going to test the regular relays first.