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Okay heres my 2 bobs worth.!
after doing electrical systems and planning a project to generate power to recharge 12V batterys some definitions
eg "I have a 12V 28Ahr battery"
A-hr is a engineers made up unit. defined as Amps drawn per hour. you can run as much as you want off your battery pack, it just comes down to it wont last long. On each of your devices it will specify how much Voltage and Current is needed Add up all your devices and how much Current/amps are drawn per hour and bobs your auntie you will know how long it will take to drain your battery!
Also as for batterys it is regarded as a safe zone as not to discharge your battery further than 80% of total capacity after this you will rapidly start loosing capacity when recharged. This is why when your battery goes flat due to lights soon after it packs it in!
As for you Epcee if im not mistaken unless you can get a 12v charger modual you will have to get a inverter to take it from 12V DC - ~240V @ 50hz AC , inverters = low battery extremely fast.
Your EQ6 mount will more than likely be drawing a DC voltage to start with at low current hence why it will last a reasonable time on a jump starter battery.
If you need any formulas to figure it out let me know and ill scoot back though some of my work to help you out.
Brendan
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