Solar question-help needed

[Stea]

Im a solar newby and need some help.

Currently have a single 100 watt panel going to a charge controller and then to 2 12 volt deep cycle batteries. (Next summer the plan is a total of 8 100 watt panels and a lithium ion battery) From there i use a 3oo watt inverter to power a cell signal booster.

When Im there its fine because I bring a generator to power everything and I usually bring an extra battery with me.

I now have a cell enabled game camera that I am using to keep an eye on the yurt. It fantastic. It seeds pictures to my phone when there is movement or when i send a command to it.

But, in order for the camera to work the cell booster needs to be running. I dont want to run the booster 24/7 because I dont think I have enough solar capacity at the moment to keep the batteries charged. I plugged the booster to a timer to turn the booster on at certain times of the day to conserve battery but obviously the timer is 120 volt and the inverter is still running the timer. The inverter never does pull enough juice to get the cooling fan running but obviously it is still converting 12 volt to 120 volt for the timer..

I have found a 12 volt timer i could use BUT can i use the 12 volt timer between the batteries and the Inverter?????? That way there would be zero power used except when I set it to run.


Thanks for any help.