Other important things are a good Internet connection and a UPS for the internet router. Using laptop for trading is better than a desktop because the laptop battery runs much longer than a UPS for a desktop.
About the issue of backup power.
I'm thinking whether a portable hand held generator (eg. Duracell Powerpack Pro 1300) would be a good alternative to UPS? I can plug the generator to the wall to charge it and on the outlet of the generator, connect it my computer. So it is being charged all the time and when the power supply is cut off, the generator's battery will come into act.
Below is the product description (I'm not promoting this product but bouncing off the idea of using portable generator as an alternative UPS). If the back up battery isn't powerful enough, we can add in or change to a bigger capacity battery for the laptops or computer to run long.
http://www.amazon.com/Duracell-DR600PWR … 4RE306T5TM
As part of their industry-leading line of superior quality power products, Duracell has created highly reliable, rugged portable power solutions that you can count on in any situation. From power outages and roadside emergencies to remote jobsites and the great outdoors, the heavy-duty Duracell 600 Watt / 1300 Amp Powerpack Pro will be there to provide plentiful power for work, recreation and emergency backup situations. Do you frequently need extra power for your tools or accessories, but none is available? If an outlet is not in reach or plugging into the dashboard's cigarette lighter is simply not an option, the Duracell 600 Watt / 1300 Amp Powerpack Pro is the perfect solution. This robust stand-alone battery based power source is powerful enough to run many popular electronics, small appliances and power tools [Note: On a full charge a 40W AC appliance can run for approximately 4 hrs, a Smartphone can be recharged up to 19 times and tablets can be recharged up to 7 times using the USB ports], and can even jump-start vehicle batteries. A multitude of safety and emergency features assures safe, simple plug and play operation, even when used by consumers who possess only basic technical knowledge. The heart of the Duracell 600 Watt / 1300 Amp Powerpack Pro is a sealed, non-spillable 18 ampere-hour AGM (Absorbed Glass Mat) battery. The Powerpack Pro can be safely and conveniently recharged from any household AC outlet so that it is ready to go whenever you need it. This robust battery is tied to a power inverter that provides 600 watts of power to its two grounded AC outlets and one DC socket. Multiple outlets give you the flexibility and convenience to operate several appliances at once, while the 4 level LED Fuel Gauge displays the Duracell Powerpack's battery charge level. Internal protection circuitry ensures long inverter life by safeguarding against overload and over-temperature conditions. An audible alarm also signals during under-voltage situations, alerting you to any possible safety concerns. Please note: this item is not intended for use with sump pumps – Due to the energy surge required to start most sump pumps the Duracell 600 Watt / 1300 Amp Powerpack Pro is not well suited for this application.
Another alternative is to buy the battery and connect to an inverter, like how a solar panel would work as another alternative source of energy.
Below is the product review of someone who used this inverter
5.0 out of 5 starsYou May Not Need a Generator if You Have This!
By IAMSLICK VINE VOICE on June 23, 2013
Color: 1000w POWER INVERTER Verified Purchase
We recently had a couple of minor tornadoes (if there is such a thing) race through North Atlanta, and it left us without power for 24-hours. It seemed like an eternity! I was very close to losing about $400 worth of food. I had an inverter that was rated at 275 watts, and tried to use it to power my freezer, but the initial power surge was too strong for too long for that inverter to handle it.
So I bought this inverter with hopes of not only being able to occasionally power my freezer, but also possibly my main fridge in the kitchen during an extended outage. It was not only able to do both, but both at the same time, which is amazing.
The freezer surges to 595W, and then after about 10 seconds drops to 125W where is just hums along. The refrigerator (25cu/ft Frigidaire) surges initially to 705W, and then after about 10 seconds drops to 205W continuous. I measured all of this using a Kill-A-Watt device.
I attached the freezer first and waited until it was only drawing 125W, then attached the fridge. I did this while the inverter was attached directly to my car battery with my car running. When I attached the fridge, the car sounded like it was going to stall, but it recovered and powered everything nicely.
In the event of an actual outage, I would probably just power each appliance individually for 30 minutes or so every 4 hours to keep things cold. I like knowing that this unit provides enough power to be able to handle either appliance, plus run an LCD TV, or some lights, etc.
Great inverter at a great price. If you're struggling with whether to buy a portable gas generator so that you're prepared for extended outages, this unit may prevent you from having to do that. It obviously won't do everything a generator can, but it's a lot cheaper, and can handle a lot of the basics.