drained battery caused death of GPS?

[jattea]

I arrived at my boat the other day after a couple weeks of not using it. I found the batteries to be dead. After checking the panel, I saw the AC converter was off. It was hot, and maybe something was draining the batteries, but shore power was not recharging them. I have no idea how the AC converter got turned off...

Anyway, the batteries have recharged, and it works fine now on DC, but my GPS unit is completely dead.

What could have caused its death? It is an Eagle, a few years old, mounted to my dash with power running to it behind the scenes.

Any thoughts on how to revive it? I would really like to avoid having to buy and install a new one...

 

[OldSkool]

Low power can damage electrical and electronic equipment as quickly as over powering them. It's commonly called a brown out. The computers are usually guarded against this and will "go to sleep" when the power drops to a certain level. Other items like depth, GPS, cabin lighting, non computer controlled gauges, and fish finders may not be guarded.

Low batteries can also kill a starter motor as it heats up under the load with inadequate power to turn it.