Furuno GPS Navigator GP-90


Oliver Henrichsen, SV Vela Nautica
 

Hello,

As I get the startup error message

Internal Battery = NG

And experiance frequent (very short for a second) error messages with anoying beep.

I like to change the battery. 

Does anybody know:

1. What Type of Battery? 

2. Location of Battery? 

Any help apreciated. 

Thanks 

Oliver from Vela Nautica Amel54 #39 
Martinique 

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