UPS Ideas ?
This could be for an RV where there have been posts about TV receivers etc getting knocked out by slow switching 120v power inputs. In this case it is in the stick house. I have jury-rigged somethin...
Forum Discussion
CJW8 wrote:BFL13 wrote:
Looking at some UPS units. Not too clear how long the battery lasts, eg.
This one says it has a sealed lead acid battery and you can get replacement batteries for it
"APC 1000VA UPS Back UPS Pro mini tower backup power supply ..... Hot swappable batteries Ensures clean, uninterrupted power to protected equipment while batteries are being replaced"
"Hot swappable" means what exactly? Are there two in it so it keeps running while you swap out one at a time? Can you recharge the battery after the power comes back on?
I have seen those "power box" things that seem to do what I want that you can recharge, but I don't know about fan noise with them if any.
Yes, it has 2 batteries, sometimes one is smaller than the other. The bigger one is the main battery and since they are in parallel, you can pull the main and install a replacement.
While that UPS has TWO 12V batteries, they ARE identical in size and they ARE in series for 24V.
"replacement pack" looks like this..
See HERE
Which ARE nothing but a standard 12V 12Ahr AGM battery, nothing special to write home about.
"hot swap" is sort of a misnomer and overused word, in the case of small consumer size UPS units it means it IS designed for the CONSUMER to be able to replace the batteries.
This typically means there is a fairly easy way to open the battery compartment, you WILL STILL HAVE TO POWER DOWN ALL ATTACHED EQUIPMENT AND UNPLUG THE UPS!!!!
Newer APC and Tripplite UPS units have a removable front panel to gain access to the battery compartment..
Much older designs did not have a easy to get to battery compartment and required one to remove the top of UPS, often also requiring disconnecting some circuit board connections and even removing or moving the circuit board.
Found a real nice writeup on how to replace the batteries in said APC..
HERE
Some older "select" APS units had an OPTIONAL EXTERNAL battery pack which could be added on which might be what some folks are thinking of.. But, not many consumer size UPS units offer external battery configurations any more..
The only ones I am finding now are 48V expansion packs which are for APC units larger than 2200VA..
