Question 1

How long does the battery last?

Accepted Answer

This is just a bay of battery cartridges and will NOT work by itself.  You need a matching control unit which is the SMX2000RMLV2U, SMX2200RMLV2U, SMX3000RMLV2U, SMX3000RMLV2UNC, SMX2200RMHV2U, SMX3000RMHV2U or SMX3000RMHV2UNC.  You need one control unit which can support up to 10 of these external packs.

The series of 4 numbers above after the SMX correlates to the maximum wattage you will use, 2000, 2200 or 3000, roughly speaking.  If you will use no more than 2000 watts, any control unit can be used.  If you think your wattage will be 2500 watts, you need the 3000 model as that can support higher wattages.  The tech specs on whatever rack equipment you are getting should have the wattage loads so that you can do the math.  If you need more than 2800 watts, then you'll need a higher series of APC unit.

Also, some of these units have different inputs AND outputs for power plugs.  Some have all three prong, 15 amp plugs, others have 20 amp plugs for what can plug into the unit.  I believe the 3000 unit needs a special 30 amp plug much like a dryer has, a circular plug which an electrician can provide in your server room.  When you decide on your wattage, examine both inputs AND outputs on the APC product page so there are no surprises when you go to install.

Your runtime will vary with wattage draw and how many of these external battery packs you have.  Here is a link to the APC website where you can choose what your wattage draw is and you will get the APPROXIMATE runtime.

(Insert manufacturer website here)/products/runtime_for_extendedruntime.cfm?upsfamily=165

Question 2

What type of battery does the APC SMX120RMBP2U use?

Accepted Answer

It uses a maintenance-free sealed Lead-Acid battery with suspended electrolyte that is leakproof.

Question 3

What is the expected battery life of the APC SMX120RMBP2U external battery pack?

Accepted Answer

The expected battery life is 3 to 5 years.

Question 4

I  have a Compatible control unit and i am looking to extend my battery run time... i am debating either this item or SMX120BP ?? they look to be about the same can you please tell me the difference ??

Accepted Answer

Both equivalent as far as capacity, the SMX120BP is 4U high and not as deep as the SMX120RMBP2U which is much deeper but only 2U high. Really depends on your rack space available.

Brand	APC
Series	Smart-UPS
Model	SMX120RMBP2U

Type	Battery
Compatibility	SMX2000RMLV2U, SMX2200RMHV2U, SMX2200RMLV2U, SMX3000RMHV2U, SMX3000RMHV2UNC, SMX3000RMLV2U, SMX3000RMLV2UNC
Specifications	battoutvolt: 120 Battery Volt-Amp-Hour Capacity: 1200 Battery Type: Maintenance-free sealed Lead-Acid battery with suspended electrolyte : leakproof Battery mounting: Enclosed battery cartridge Expected Battery Life (years): 3 - 5 RBC Quantity: 2 Battery blocks per string: 10 Operating Environment: 0 - 40 Degree Celcius Operating Relative Humidity: 0 - 95% Operating Elevation: 0 - 3000 meters Storage Temperature: -15 - 45 Degree Celcius Storage Relative Humidity: 0 - 95% Storage Elevation: 0 - 15000 meters Environmental Compliance: RoHS 7b Exemption, REACH: Contains No SVHCs

Dimensions	26.26" x 17.01" x 3.35"
Weight	124.25 lbs.

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