Easy & Cheap way to determine battery draw
I would like to do some boondocking in Oct. How can I determine battery drain when I turn on a device, like a TV, amp, etc... while boondocking? Looking for an easy/cheap method to accomplish. Thanks
Forum Discussion
Darryl&Rita wrote:Tom_M wrote:
The OP is talking about boondocking. The Kill-A-Watt would be of little use since most of his power usage would be on the 12 volt side.
TV? Amp? Sounds like 120v A.C. to me.
Cheap and easy? Turn over the device, and read the label.:S
Add up all the devices you want to power, and size the inverter accordingly.
How can I determine battery drain when I turn on a device, like a TV, amp, etc... while boondocking?
Is amp referring to his DC stereo?
He will also need to measure and factor in his DC parasitic load! :S
Otherwise, why bother? :S
Furthermore, measuring current on the AC side doesn't consider the inverter inefficiency. It will require a minimum of 1.25 watts input to every 1 watt out.
