I purchased the Arris TM822 modem. The page to purchase the modem offers 2 batteries for back up. Do I need both batteries or just one?
899215
They probably offer two length durations for backup. normally the 8-hr choice is plenty
899216
Modem will only accept one battery, but the green one is an 8 hr and the other available battery is longer and is a 12 hr.
899217
I have the xfinity Arris TG862G/CT modem and the battery compartment has only 1 plug to accept 1 battery. The battery compartment is 5.125 long and the battery I bought is 2.75 long. Perhaps a longer battery would also fit.
1700668
If you have already the original battery you only need one spare...battery gives you enough capacity for switching them on charge...
407419
it uses just one.. the 2 extra are spares.. i've found the size, L5411 by vinnic, isn't a standard stocked in the stores. i bought a pack of 10 for under $9 on the amazon web site.i received them in good condition on the projected day.ON THE INSTRUCTION SHEET IT LISTS COMPARABLE BATTERIES BY STANDARD BRANDS, I BOUGHTSOME MAXELL A67,BUT THEY DIDN'T FUNCTION AS WELL OR LAST AS LONG.
1456746
My control box came with a battery back-up, I have had this unit for 3 yrs and very little trouble with it, it is a inexpensive unit, you get what you pay for.
1974477
I did not measure the size of the 2 batteries, but I do have the APC Back-UPS XS 1500 tower.... if that helps, and the 2 batteries matched what was in that UPS. I actually remember 4 wires connected, 2 on top and when the other was separated of each other, there were 2 more wires.
2105102
according to the particulars listed for the battery---"Touchstone TM802 and TM822 telephony modems and TG852,TG862G/CT and TG862 residential gateways. Also fits many more Arris models". Looks like your modem is listed. My modem is Arris TG862, it fits.
545617
Yes, I have two units, one for the wireless phone and one for my modem/router combo. Buyer beware, the unit has been out of production for 10 years, I had to change the batteries on both units before they would work.
1983121
One battery. You can use a LiPo which will give you longer battery life and more speed.
1328934
Yes, it is on Mediacom's supported modem list. Just be aware that if you receive the one without a battery backup your Mediacom telephone service will not work in the event of a power outage. You could buy a small UPS (Uninterrupitible Power Supply) to accomplish the same thing as the modem backup battery.
1985508
Hi The Battery is for backup. Its good to replace the battery after 2 or 3 years. Very simple to do. It is a Great switch.
454622
No. You would need this SBV5220: Motorola SURFboard SBV5220 Digital Voice Modem with Integrated Battery BackupApparently there is a SBV6120, but comcast does not support it, and they are hard to find.If you can find it, you should check with your provider before purchasing it.
1465463
U need to buy the extra off line charger so can charge both batteries. And if you floor space is big you clean with both batteries without waiting.
828228
You can buy 2 extra batteries but you also need to buy the plastic battery box they go into... there are higher output batteries available to give you extended range. I would install the upgraded batteries and use the originals as a spare (still need to buy another battery box). There is no room to 'double up' the batteries.
1416277
As best I can see they are the same battery. You probably won't find them in the store and I've always used Amazon. I live on a farm and have many Midland radios. So far, they are the best for the money. I've not had one fail, only loose them in the woods.
69354
Depends. If you plan to use it a lot, go for the 2/28 version with the two batteries. I personally don't need the second battery, but I guess it's nice to have a spare.
532418
Sorry to hear that, I only purchase 1 and it works fine. I am not sure if this help.
735613
Thank you for such a quick reply! I currently have a Cyberpower 450va and the computer, monitor, and WiFi router are plugged into the battery backup section. It works fine. I recently had FIOS installed, and got the Optical Network Terminal (ONT) without the battery backup. I was thinking of buying the larger CyberPower 850 to be sure it could handle everything (for a couple of minutes until our generator starts), especially since I have no clue how many watts the ONT uses. Thanks again for your response.