I would be insterested as well
On 3/17/07, Anthony Will <[EMAIL PROTECTED]> wrote:
I would be interested in learning more about it.
Anthony
Broadband Corp.
Russ Kreigh wrote:
> Yeah, it's completely possible, and will work.... well, at least once, until
> the batteries are gone and need to be recharged.
>
> The issue is the duty-cycle of the charger, your going from a 14ah to 100ah
> charge load, the charger has to run 7-times as long to fully charge the
> batteries, this may work fine with some higher end UPS, and some it might
> burn up the charger.
>
> Another thing to make note of, is that most UPS systems run an internal 24V
> system, and not a 12V system, so be SURE which one you're dealing with
> before you start any modifications.
>
> We're in process of developing our own remote-site power solution.
> Everything we've found is either too big physically, requiring expensive
> outdoor enclosures, or doesn't have the run-time we desire, or is too
> expensive.
>
> I think we've got the basic design down, we're adding things like a local
> power input option, so that in a long extended outage we can drop the
> generator off to charge the batteries and run the system, and when the
> utility power is restored, it will switch back automatically.
>
> We're also looking into a direct 12v input from a vehicle cigarette lighter
> output, or additional external batteries.
>
> Would anyone have any interest in this when we get it complete?
>
> Thanks,
>
> Russ Kreigh
> Network Engineer
> OnlyInternet.Net
> Supernova Technologies
>
>
>
> -----Original Message-----
> From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On
> Behalf Of paul hendry
> Sent: Sunday, March 04, 2007 12:09 PM
> To: [EMAIL PROTECTED]; [email protected]
> Subject: RE: [WISPA] External battery on UPS
>
> Scott,
>
> Surely it should be possible to replace 2 12v 7ah batteries run in
> parallel (not series) with 1 12v 100ah battery as the voltage isn't
> changing? With regards runtime I can just increase the external battery
> count.
>
> Mac, don't worry I have no intention of putting my tongue on these
> things to see if they charged ;)
>
> Cheers,
>
> P.
>
> -----Original Message-----
> From: Scott Reed [mailto:[EMAIL PROTECTED]
> Sent: 02 March 2007 12:22
> To: WISPA General List
> Subject: Re: [WISPA] External battery on UPS
>
> The charger is designed for the size and number of batteries in the
> original configuration. Changing the quantity and/or type of battery
> risks damaging either the charger or the batteries.
>
> Also, runtime is determined by the batteries, so changing them changes
> the runtime.
>
> paul hendry wrote:
>
>> Is anyone using external batteries on the larger APC UPS's? I've got
>>
> an
>
>> old Smart-UPS 3000 RM that has 8 x 12v batteries in it. The thing is
>> they are wired in a bit of a strange config. It looks to me like they
>> are split into 4 sets of 2 batteries running in series then 2 of those
>>
>
>
>> sets are cabled to the same connector inside the UPS and so there are
>>
> 2
>
>> connectors with 4 batteries hanging of each.
>>
>> Is there any reason I can't run 2 x 2 (in series) 12v 100ah batteries
>> instead of the original 8? I don't seem to be able to and don't really
>>
>
>
>> want to get another 4 batteries just to discover I can do it with 4.
>>
>> Cheers,
>>
>> P.
>>
>> -----Original Message-----
>> From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
>>
> On
>
>> Behalf Of Mark Nash - Lists
>> Sent: 16 November 2006 16:45
>> To: WISPA General List
>> Subject: Re: [WISPA] External battery on UPS
>>
>> I replaced the two internal batteries last night with two external,
>>
> $100
>
>> batteries, and put a load on the UPS that matched the highest load I
>> have
>> out in the field (80w). It took 2 Tranzeo APs, an Xpeed SDSL modem,
>>
> and
>
>> a
>> 19" TV on the QVC to load it up properly. Now instead of 1 hour I get
>>
>
>
>> 13
>> hours. Bigger, better batteries should net me more time than this.
>>
> My
>
>> goal
>> is bang for buck at this stage in my business...more run time for a
>> sensible
>> price.
>>
>> One cool thing about this setup is that I can rig it up to be able to
>> simply
>> take new batteries out to a site when they are getting low, instead of
>>
>
>
>> the
>> generator. I can keep some spare batteries charged up and ready to
>>
> go.
>
>> It's a whole lot cheaper and easier than purchasing multiple QUALITY
>> 1000w
>> generators and putting large custom tanks on them. That is if your
>>
> UPS
>
>> is
>> not on the top of a water tower or something. ;)
>>
>> Mark Nash
>> Network Engineer
>> UnwiredOnline.Net
>> 350 Holly Street
>> Junction City, OR 97448
>> http://www.uwol.net
>> 541-998-5555
>> 541-998-5599 fax
>>
>> ----- Original Message -----
>> From: "Brian Rohrbacher" <[EMAIL PROTECTED]>
>> To: "WISPA General List" <[email protected]>
>> Sent: Wednesday, November 15, 2006 6:41 PM
>> Subject: Re: [WISPA] External battery on UPS
>>
>>
>>
>>
>>> I'm pasting Gino's link to the right thread.
>>> Then I can search me email in a year and find the correct thread....
>>>
>>> Connectors:
>>>
>>> http://www.partsexpress.com/pe/showdetl.cfm?&Partnumber=263-110
>>>
>>> Batteries:
>>>
>>> http://www.donrowe.com/batteries/8a31dt.html
>>>
>>>
>>>
>>> Brian Rohrbacher wrote:
>>>
>>>
>>>
>>>> Can we get some links to these batteries that work well?
>>>> Gino,
>>>> Got a link to the DC block connectors you were talking about?
>>>>
>>>> Brian
>>>>
>>>>
>>>> Travis Johnson wrote:
>>>>
>>>>
>>>>
>>>>> Hi,
>>>>>
>>>>> We run two 4 gauge power wires out the front of the case, connect
>>>>>
>>>>>
>> the
>>
>>
>>>>> positive to a 60A fuse, and then to the batteries.
>>>>>
>>>>> We are using AGM type (same thing used in UPS systems) big
>>>>>
>>>>>
>> batteries
>>
>>
>>>>> (a little bigger than a car battery, but each battery is 110
>>>>>
>>>>>
>> pounds).
>>
>>
>>>>> We wire them in series (to get 24VDC).
>>>>>
>>>>> This setup has only been installed for 12-18 months at various
>>>>> locations, so I don't have an estimate on battery life.
>>>>>
>>>>> Travis
>>>>> Microserv
>>>>>
>>>>> Brian Rohrbacher wrote:
>>>>>
>>>>>
>>>>>
>>>>>> You got any pics of this or similar Travis....anyone?
>>>>>>
>>>>>> Travis,
>>>>>> What APC do you use and what batteries are added? What do you
>>>>>>
>>>>>>
>> draw
>>
>>
>>>>>> and what is th run time? Do you know how many times the one with
>>>>>> the most cycles has been drawn down? How long do the batteries
>>>>>>
>>>>>>
>> last?
>>
>>
>>>>>> Brian
>>>>>>
>>>>>> Travis Johnson wrote:
>>>>>>
>>>>>>
>>>>>>
>>>>>>> You can't use just 1 battery. The APC units want to see 24vdc, so
>>>>>>> you need two batteries running in series.
>>>>>>>
>>>>>>> It works perfectly, as I have 20+ remote locations running off
>>>>>>>
>>>>>>>
>> two
>>
>>
>>>>>>> gel type batteries. Make sure you install some type of a fuse on
>>>>>>> the positive side of the connection.
>>>>>>>
>>>>>>> Travis
>>>>>>> Microserv
>>>>>>>
>>>>>>> Mark Nash - Lists wrote:
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>> I believe I remember some discussion on this list on connecting
>>>>>>>>
>>>>>>>>
>> an
>>
>>
>>>>>>>> external battery to an APC UPS. I'm in the middle of doing it
>>>>>>>> right now and am having problems. The UPS just beep
>>>>>>>>
>>>>>>>>
>> continuously
>>
>>
>>>>>>>> with the 'bad battery' light on. I'm using a Lifeline deep
>>>>>>>>
>>>>>>>>
>> cycle
>>
>>
>>>>>>>> battery. Any ideas?
>>>>>>>>
>>>>>>>> Mark Nash
>>>>>>>> Network Engineer
>>>>>>>> UnwiredOnline.Net
>>>>>>>> 350 Holly Street
>>>>>>>> Junction City, OR 97448
>>>>>>>> http://www.uwol.net
>>>>>>>> 541-998-5555
>>>>>>>> 541-998-5599 fax
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>> --
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>>>
>>
>>
>
>
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