Hello folks, my first post, thanks for any and all help.
I bought a Battery tender that maintains 3 types of batteries with 2amp and 8amp capabilities. I purchased it for my lithium battery in my van. The problem I am having is with one of the touch switches. It doesn't work all the time. I have opened up the glued together housing carefully and have exposed the board and two touch switches. I do not understand how these switches operate or know when you touch the what seems to me a thick hard plastic case? The case doesn't flex to allow pressure to operate the switch. Then I thought maybe the switch uses your skin to make a connection but how through such a thick case? The switches are round with what looks like a 555 timer chip on them . It also has 4 contact spots, one is 5V, second is Grd, third is SW1 and finally the last is SW. There are only 3 wires running to the switch Black , white and orange.
The unit works when the switch works but if the switch is acting up then the unit will not switch to the lithium battery option.
Can someone suggest how this operates so I have some sort of idea on how i can solve this issue? Or ask me to supply more information, basically so i know what to give you in regards to what labels etc you may need to know what switch these are.
I know this is not the best way to describe things, but i have no other knowledge on how to explain to you what I am dealing with?
Again thanks for any help you can offer.