(starting with a tip.....)
The eMap cover is kind of difficult to remove just by sliding. To remove the cover, jam your thumbnail in one corner......
Then jam your thumbnail into the other corner. Easy!!!.
Two tiny ribs of silicone is about right for rechargeable NiMh batteries. To re-shape un-cured silicone - wet your finger first so the silicone doesn't stick to your finger
If there are black deposits on the battery terminals, this is carbon buildup caused by engine vibration. To get any life out of the batteries you must stop the movement of batteries or lifting at the terminal connections.
Inside the battery case, the batteries are suspended between two springs.
At certain frequencies (RPMs) the batteries jump around and lift off the
terminals, creating a small spark each time they disconnect. After several
thousand sparkings, a black carbon residue builds up between the contact
and the battery terminal. Even though the batteries are not dead, the
electricity can't get out thus the GPS thinks they're dead and shuts down.
You can scrape the residue off the battery, but the scratches allow more
oxygen into the spark, and it seems to return even faster. And it's difficult
to clean the contacts anyway, especially out in the woods. For this reason
we advise using external power right from the start if possible. At the
very least tape the batteries. Use dielectric grease (click here
to order
a 1 oz tube) on the terminals to shut out the oxygen which prevents
a burning spark.
"Duracell" batteries appear to have tougher terminals and last
longer under vibration than "Energizers" or other brands.
