@Gangsta101;
The type of UPS I am using is "Powercom", model "Black Knight, BNT-500VA". You may visit the following website to read about it and also download a PDF brochure on its specifications: < http://www.powercom-ups.com/products/ups.htm >. I have attached a photo of the UPS here.
Specifically, the battery I am using is 12V, 35AH sealed lead acid battery. All you need to do is replace / switch the 12V,7AH internal battery of the UPS with the external one. You will require connecting cables of 6mm thick stranded insulated copper wire to minimize power losses during recharge and usage. Note that you should not load to the UPS an appliance requiring more than 80 watts of power. Otherwise the UPS internal transformer will overheat!!! A standard modern 14 inch colour TV should draw about 60 watts; and an FTA receiver atmost 20 watts. When the battery voltage goes below 11V, the UPS will warn you of eminent shutdown. However, that will be about 4 - 5 hours later. This type of UPS has a large charging transformer. I have used it for the last 18 months without any problem. Maybe other types (with internal transformer) may work too.
Nice weekend.

@Arsernal1 and Linksman,
Thanks to you all, FTA gurus!
Last night I entered the parameters 11185/H/05696 for the Globecast Africa (Eutelsat W3A). And guess what? It works!!
I have been watching Olympic games on that bird. This morning, the games were live from 4.00 GMT. Better still, I am using a 65cm offset dish with a 0.3dB LNB (type/model = "starmax" and the signal strength and quality is over 70% - and better than that of all the other channels on that satellite. I am located at latitude 36 East (East Africa), just "beneath" the Eutelsat W4 satellite.

@enitan2002,
Your photos and set-up looks great. You could also try the following tips to extend your power backup time:
I have a UPS (rating, 500VA) which uses a 12V sealed (maintainance-free) rechargeable battery. This can only keep a computer or 14 inch TV working for less than 5 minutes if there is a power interuption. So I modified the UPS and now I can use it for 4-5 hours with the same TV plus the FTA receiver. What I did is to replace the 12V,7AH small internal battery with a 12V,40AH external battery (the sealed type). And it works perfectly incase of power blackouts. I leave the UPS system connected to the mains and when the power comes back, the UPS recharges the big battery within 6 hours.
All the best.

To Arsernal1:
You wrote:
ALL,
Globecast Africa is on 11185/h/05696 with English commentaries. But your signal quality must be high enough. Goodluck

Please let us know on which satellite this Globecast Africa transmitting.
Thank You.

Dear All,
On the Eutelsat Sesat W4 satellite (36 Degrees East), there are two new coded channels (irdeto format) namely: "PANDA" and "SMAX2". Enter the following parameters on your decoder and rescan:
Frequency = 11507; Polarisation = Vertical; Symbolrate = 30,000.

Note: Remember to insert FEC = 3/4.

Good day.

Dear All,
On the Eutelsat Sesat W4 satellite (36 Degrees East), there are two new coded channels (irdeto format) namely: "PANDA" and "SMAX2". Enter the following parameters on your decoder and rescan:
Frequency = 11507; Polarisation = Vertical; Symbolrate = 30,000.

Also confirming that Channel "O" is now open: Frequency = 12476; Polarisation = Horizontal; Symbolrate = 26040; FEC = 2/3. You can now watch it with your ordinally FTA decoder (on Eutelsat Sesat W4 satellite, 36 Degrees East).
Cheers.

Dear FTA hobbyists,
I am new on this forum. I appreciate all your good work. I am using an FTA decoder model Arisat-AR600 and I am pointed to Eutelsat W3A and Intelsat 7/10. I am using two small 65cm dishes here at Nairobi City, Kenya and they work perfectly.
Since friday last week, there is a new FTA channel from Angola - TPA1 - on Eutelsat W3A. Just rescan your decoder on Frequency 12728, Vertical Polarisation, Symbol-rate 30,000. Confirm.