Originally Posted by silver heels
According to the manuals
the Link 20 uses 25 mA in sleep mode light bar, the morningside sunsaver duo uses 5.5 mA(night) and 10.0 mA(charging).
25ma is, still 18ahr month, but much more reasonable. I suspect something else must be on when the battery
switch is off. Disconnect one of the battery
terminals and use a multimeter to measure the current
with the battery switch off.
The only other possibility I can imagine is the algorithm or formula the Link20 uses. Most battery monitory compensate for the fact that amp hours in does not equal amp hours out. If you take out 20Ahrs from battery you need to put back something like 24Ahrs to break even. So a battery monitor
that counts Ahrs in and simply subtracts Ahrs out is not acurate. Different battery monitors adjust for this in different ways. I dont think this is the cause of your readings, but depending how this comensation is done it can lead to some spurios conclusions about energy consumed or put back.