saw this store on ebay, went to pick up at store. batterys r about 1 year old, but still working well, they said still hav lots in stock, i know not many ppl use this but its a real bargain, same size battery in masters they r selling for $24.
12v Battery 2.3Ah for $2 and 5Ah for $4
50
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Ebay link? Postage costs?
Address for sydney store?
eBay shop seems to be Battery-ehome [ http://stores.ebay.com.au/Battery-ehome/ ], maintained by irenehang who is listed on the batteryguru.com.au contact page.
The two listed addresses (Melbourne and Perth) both match YHI Power addresses listed on:
http://www.yhipower.com.au/main/contactus.htmlSo the other pick-ups are probably YHI's Sydney (Wetherill Park), Brisbane (Acacia Ridge) and Adelaide (Green Fields) warehouses.
Are any of these suitable for UPSs? (I am referring to the small office type UPS)
HC1221W is the one im looking at for the Home UPS. Its for the slimmer style UPS's.
i find the store on ebay, but if want the deal hav to pick up, they dont sell cheap on ebay…..i bought on ebay for $10, find in store only$ 4….no refund on ebay…
Good price. Just a quick note for people not familiar with this type of battery, after a year in storage, the voltage will deplate to a really low level till some chargers will not proceed to charge. Bring your cheapo hobbyking bargain multi meter to use. Voltage lower than 9VDC normally sounds trouble. There are ways to revive but not worth the trouble for a few dollar's battery.
9 volts normally sounds trouble? You ain't kiddin'.
A healthy, new gel cell (unlike liquid electrolyte lead-acids) is around, or just over 13 volts.
A gel cell that is below 12.6v has been sitting around for many months uncharged. Left for any length of time at a voltage even slightly below that figure and you have on your hands a battery with a very significant amount of irreversible sulphation, that is on a slippery slope to an early death.Buy and use these batteries in any important application at your peril.
The various 'ways to revive' work with very mixed results on liquid electrolyte lead-acids. Either not applicable at all for gel cells, or if charge pulse or very high voltage zap-related are next to useless even on high capacity batteries. Over the years, I have tried various methods to either extend the life, or revive sulphated-up, lead-acid batteries, and now regard the efforts as having been largely a waste of time. Prevention always better than attempted cure.
Just a word of warning, as there is only A ONE WEEK WARRANTY test charge quickly after purchase to ensure the battery will recharge or return it rapidly.
indeed
YHI Power in Wetherill Park tell me they have plenty of old stock 12v 7Ah batteries that can be bought for $15. I will be test/confirming mine in a UPS over the weekend.
Would like to hear the results
All I can say so far is the battery works (I could post a photo of it if you like?).
The Eaton Powerware 5110 UPS that I had gathering dust for a few years was not functioning when I went to use it recently so I checked the battery with a multimeter and it was only supplying around 6V instead of 12V. With the replacement old stock battery, it now works; though I have only been successful in driving very small loads like phone/tablet 5V USB chargers. I don't know how to test the battery further but if you are interested, and know simple/effective ways to test performance/capacity please feel free to share or provide pointers. I am only modestly knowledgeable/skilled with electricity and batteries and was thinking to connect the USB port and maybe a software utility is available to assess the battery?
BTW, I am using it for the built-in DC to AC inverter that provides mains power sockets and have connected it to a solar panel for recharging in the absence of mains power like for camping and such situations.
Did you test the battery before you purchased/installed? That would have been the your best pointer to the possibility of a nasty surprise down the track in the event of a blackout.
Lead-acid batteries that are in regular use can sustain a deep discharge occasionally to a bit above 11 volts and if recharged quickly can recover without it lopping off too many ultimate cycles.
Batteries that are left to sit inactive or on the shop shelf at the voltage levels I specified in my previous comment, will inevitably have a shorter life.
Your UPS's attempt to maintain a float charge on an already compromised battery - if that's what you have - will hasten its demise.I run my UPS units from outboard car batteries which also allows me to monitor them particularly keenly. Unless you know what you're doing, and understand the big limitations of UPS internal float-chargers, and other potential issues involved, I do not recommend this.
Be it the software that came with your UPS, or something third party - that may give some sense of the ongoing potential of your battery, if you get to understand exactly what you're looking at, and how it's changing over time.For most people - understand that even healthy new gel cells, particularly when installed in UPS units have a finite life. Buy them at the best price you can, but buy in good nick.
If you want those batteries to really get you out of strife in a blackout, understand that you may end up having to replace them every couple of years or so.Yes, they were happy for it to be tested before purchase so I did that with a multimeter and my UPS is very small so I plugged it in and turned it on to confirm; however the software does not appear to have any performance/capacity diagnostic test/reporting so I am open to suggestions/advice for gauging its service life/health and have upload a photo of it available at http://files.ozbargain.com.au/upload/77509/18926/20131021_22…
What did the voltage read before purchase?
Yes, that would have been useful information.
As a result of the way I have arranged my setup, and how it performs during a blackout, I haven't had to bother with any UPS software.
I suggest you look for any updated software you might find on the Eaton website that might at least give you a voltage readout.If your UPS's internal charger isn't able to charge your battery to float voltage level (about 13.8), you'll know you're in real trouble. If it is able to but takes a very long time to achieve that level, you still have problems. If, after achieving float level, you see the voltage progressively getting lower over a period of just months - only if you have very low wattage equipment connected are you possibly going to avoid a nasty surprise down the track come blackout time.
I can't recall the exact value if the pre-purchase reading but it was over 12V.
I left the UPS plugged in to mains power for over/around 24 hours and as shown in the screenshot available at http://files.ozbargain.com.au/upload/77509/18940/powerware51… the battery is now at 13.7V according to the UPS software running on Windows 7 connected by USB.
I only had a small laptop plugged in and when I removed the mains power, it dropped but stayed at 12.6V when running on battery with the audible warning beeping away for around 5 mins. When I restored mains power it increased to and stayed at/around 13.5-13.7V within a few mins.
Does that confirm that I have a good battery? Or is there better/additional testing I should/could conduct to better gauge battery health? And, can it be done with minimum/modest wear on the battery? Thanks.
BTW, the battery is listed as follows on my invoice:
BOLGPL1272F2 CBD 10 YEARS DESIGN 12V 7.2AHF2
You haven't completely wasted you $15, by any means, but keep a close eye on the battery voltage as the months go by. If, say within 6 months, you see the float voltage drop to 13.5 or below, that will indicate that the battery was quite a bit below par when you bought it (and that the internal charger is basically charging continuously to maintain that voltage).
Even though the displayed voltage may not drop much lower, when you are in a blackout situation, the nasty surprise I mentioned above may mean that you have very little time to shut your equipment off in the manner that you want to.
When things get really crook with the state of your battery (even with the on-charge voltage still displaying at around, say, 13.3), when the mains go off the battery voltage may plunge almost immediately to your UPS's cut-off point - giving you effectively no time at all.
Do you have the ebay limk?