A: Hello Sum1, The PureLine 400-Watt Power Inverter contains 1 powerful fan inside to keep the device cooled.
A: Hello Minimee, We would recommend using Online Resources such as GOOGLE to find something called a BATTERY BANK CALCULATOR, which will provide you with the information you need. We would recommend checking your TV because 90 amps for a TV sounds way to big ( 90 amps is 10,800 Watts) and running 10,800 Watts for 8 hours would take approximately 1872 Amp hours so about 8 of those 220ah batteries. Keep in mind this inverter is only a 400 Watt inverter and if your TV requires 90 amps you would need a 10,000 Watt inverter at the very least.
|Brand||Wagan Tech||RYOBI||Energizer||AIMS POWER|
|Name||PureLine 400-Watt Power Inverter (ETL)||ONE+ 18V 800-Watt Max 12V Automotive Power Inverter with Dual USB Ports||ENK1500 Inverter||600 Pure Sine Inverter 12-Volt DC to 120-Volt AC ETL Listed to UL 458|
|Automotive Part Type||Power Inverter||Power Inverter|
|THD SO SKU||1004102589|
|View Product||View Product||View Product||View Product|