Heater draw

Chaverim

Ok. I’m bad with the electrical power consumption math. How long can I run a heater like this 800w before killing my battery by running too low to be able to recharge?

blue--net 12V 600W/800W Car Vehicle Fan Heater, Portable Car Windscreen Demister Defroster Defogger Compact Air Heater Heating Warmer Windscreen Car Heater Defroster https://www.amazon.com/dp/B07KGD7W9K/ref=cm_sw_r_cp_api_i_.n3YDbAN055XD

this is the battery I have.

Mighty Max Battery 12V 100Ah Replacement for Trojan SCS150 Brand Product https://www.amazon.com/dp/B00S1QBRLQ/ref=cm_sw_r_cp_api_i_jq3YDb1A3ET3Y

if I am running anything else it is the refrig but it’s also likely cold so fridge isn’t using much power.

JamesDow

If I am correct.

- 1.5 hrs x 800 watts = 1200 usage watts / 12 volts = 100 amps.

- From a math standpoint you could run the heater for 1.5 hours before killing your battery.

- In reality you would get much less. I would not recommend your heating solution and instead look for a product that would not draw from your battery.

HellFish

Without an impractically large battery bank, you just can't heat or cool an RV with battery power.

Chaverim

Thanks. Now I have to find my draft points. My camper seems to be quite drafty and let out all my heat.