Unused Batteries past their date... up for sale

As you know we got hundreds of brand new Dell UPS units in recently...

Most of them were made in 2011 and had high quality fresh batteries installed in them.  But after a year, their batteries were no longer under warranty and units liquidated.

While the batteries are no longer factory spec'd and warrantied they still have a great amount of life in them.  When we recharged them, many of them had 90% or better mhos ratio, suggesting plenty of life still left.

Maybe they aren't worth $28 new..... but they are a steal at....

When True Online is neither True or Online

Call me old fashioned, but I am getting tired of words and specs being so loosely interpreted that they can me anything.

Last week I bought some "pomegranate juice" to make into real grenadine for a fireman's sour.   (give me a break... its always hot enough here in Florida for foo foo drinks).  It turned out it was mostly apple juice. Next, I rented a 4x4 earlier this week.  But found out that its not a true 4x4 but a "independent drive" transmission which "works like a 4x4." Then today I bought a Chef's Oyster knife which promptly broke after 4 oysters.

The juice, 4x4 and knife all pretended to be something we know and trust.  But in each case someone decided we didnt really need what we wanted.

The same is true in Online UPSes.  Nearly everyone says their Online UPS is true online or double conversion.  But the reality is few actually are truly online types.

The manufacturers (like the juice, 4x4, and knife guys) wont admit to lying, but rather simplifing the complex terminology to give you value.   That simplifying can be disastrous.  My drink tastes like crap, I slide off the road, and stare at unopened oysters.

But one manufacturer has decided to introduce a new term to describe true online.   Its GE Digital and they call their honest Online systems a true Voltage and Frequency Independent online system

This matters for people needing their UPSes to keep constant frequency.   Most Tripplite and Powerware so called Online systems arent True VFI Online.   But APC's 3000 actually is

6000, 6000, 6000 ... Cant get enough?

I know I mentioned way back, that the APC 6000 3U unit was a great model... it has the L630P plug, net card and rail kit included, true online, and a small 3U frame...

But its getting crazy... in that everyone is asking about, repairing and buying them.

While thats fine.. we wanted to remind you of some BETTER buys in the 6kva range AND what makes them better

Dell Smarter LCD 6000 (eO694)

• Blue LCD with full control
• 200 to 240volt rated  
• Online Double Conversion w/high efficiency mode
• 10sec rail kit
• more here

Liebert 6000va GXT 3 (lx695)

• Arguably the best Online UPS manufacturer
• 150% rated overload for those peak energy needs
• More runtime 

Tripplite 6000va 6U (to696)

• Great price
• Twice the runtime as the 693g4
• Free Network card included
• $300 less than 693g4

Powerware 6000va (p9695)

• Best 6kva value
• More than twice the runtime
• $400 less

APC 7500va 6U (796g3).

• 1500va more power
• Twice the battery of the 3U 6000va
• Just $150 more for equivalently bundled unit (ask for 796g4)

$600 Cash Back on Liebert NFinity Systems

Its getting crazy... we normally sell 10-15 times more Symmetras than Liebert NFinitys, but its been so long since we have sold one of these beasts we are offering a 1 time crazy offer.

$600 CASH BACK

For those not familiar, the Liebert NFinity is a modular UPS like the Symmetra LX.  In some ways they are better than the Symmetra.  Four things stand out

• Wider Input Voltage Window
• Highest Overload Capability (110%)
• Smallest footprint for 16kva (20" W x 28" D x 41" H)
• 12kva costs under $4000... Symmetra LX 12kva costs $5500

Learn more here

We have two listed (a 12kva and 8kva redundant) but other combinations are available.  Order online from the store and you'll receive $600 worth of American Express Gift cards.  First order gets it.

http://www.greenlightups.com/go/lnf8dr.htm

http://www.greenlightups.com/go/lnf12c.htm

The Mini UPS inside your server

Many people forget that inside every power supply is a mini UPS.  Its not large but it exists.  It provides the "hold up time" for a power supply and hence your computer.

While this little molecule of power can provide the full load rating of the power supply... it can only do it for 12 milliseconds.

If this little UPS had a battery it would 20,000 times smaller than our standard 12v 7ah battery.  Thats a 12v 0.00004ah battery to you and me.

12 milliseconds isn't alot of time.  Remember, 60 hertz electricity means 60 cycles a second.  Thats 60 cycles per 1000 milliseconds or if my math is right 1 cycle every 16.7 milliseconds.  Or in other words... the mini UPS cant even provide a full sine wave cycle of power.

But you don't need an online UPS system to immediately cover an outage or disruption.  The line interactive UPS units normally switch over to battery power in 3 to 5ms, giving you lots of spare time to make that switch effectively.

But whats even more amazing is that your line interactive UPS can switch back and forth 2-3 times within the span of 1 sine wave cycle.

Dell UPS... the Smarter UPS : Comparing the Dell 3000 (e313)

One of the most popular specification line is the 3kva 120 volt rack mount.   Today its dominated by the APC Smart UPS SUA series.  However it has serious drawbacks.
First it has a limited amount of run-time out of the box, which cant be extended.   The old tired display looks out of place in a modern server rack.  Its newer generation the SMT series has the screen but still lacks the extendable run-time feature.  Plus both models don't have server type PDU output receptacles on the back.

The Dell e313 Model has all of these covered at a fraction of the newer SMT model.

Learn more about the 3 models

• APC Smart UPS SUA  (302b)
• APC Smart UPS SMT  (302v)
• Dell Smarter UPS (e313)

Dell UPS.. the Smarter UPS: 3 types of UPSes in 3 words

We have reviewed the several types of  UPS topology previously.  Standby, Line Interactive and Online Double Conversion are the most common.

All of these Topologies are just processes for which the UPS delivers backup energy and power conditioning.  However, many people get confused with these terms.

Dell has a nice succinct summary....

• Standby - SWITCHES.  If there is a problem, it switches over to clean battery power
• Line Interactive - MODERATES.  If there is a problem it first moderates the power by bucking or boosting the power to meet the equipment's needs.  This is why this this often called Smart
• Online - ISOLATES.  If there is a problem, it doesn't care because power problems are fully isolated from the power system

Dell's High Efficiency Online UPS is a hybrid of them all.   It has online isolating features when you need them and line interactive features when you dont.  If the balancing rock is the moderating line interactive and the lone tree in field is the isolating online.. then maybe this image is the combination:.finite and lonely but bearing the entire human species through the oceans of space and time.

"On a mote of dust, suspended in a sunbeam" - Carl Sagan

Dell UPS ... the Smarter UPS : Blue Light Red Light

Its seems like everyone now has a Blue LCD control panel... APC's Smart UPS X, Eaton's 5PX and 9PX....  but only Dell has a Blue/Red control panel

First innovated for their PowerEdge server line, Dell's screen will switch to red if there is a problem.  So you can quickly see that there is problem, whether overload, battery or maintenance issue.

Just another reason why Dell and GreenlightUPS should be your first choice for quality refurbished UPSes.

Get your Smarter UPS here

DellUPS Post 1 - General Advantages

As you may know, GreenlightUPS just received over $350,000 worth of unused Dell UPS units...

We are launching a special Dell UPS site and will focus our Blog on some of the unique features of the Dell UPS Model Line

LCD Control:   Every Dell UPS has a large local display to view system status and configure UPS parameters and options. Unlike the LEDs on competitors’ UPSs, the large, bright, backlit display provides a comprehensive view of the UPS.

1-2-3 Rail Kits:   Our refurbished Dell units include the Fast Connect 4 post Rail Kit that snaps and locks in place in less than 5mins.   Included in rack models (A $89 value)

Server Ports:  Unlike most UPSes, Dell UPS have several types of receptacles.  Most have C13 and C19 ports so you can direct connect to your server without the need of an expensive PDU.

Learn more at our site...

We just got in $300,000 worth of Dell UPSes...

You have long trusted the Dell name for servers, racks and networking equipment.

Now you can buy their UPS line.  Built from the ground up with high quality Eaton components and Dell aesthetics . They are an amazing product line.

Dell's success is driven by the customer. Their UPSes are no exceptions. They have the features you want: Full feature LCD displays, Run-time upgradability, Easy battery changes, Server integration software and Honest specs.

Visit our special Dell UPS Site to learn more