OK, so, I have an APC UPS Pro 1000 (aka 1kva). So, the battery has just died on it, and I am thinking I will just connect up a deep cycle marine battery. However, I am wondering a few things.
Does the onboard computer have a memory of how much voltage is in the battery, or does it actually take direct readings? So, in other words, if I hook up a battery to the UPS, will I get the full battery power, or will I be limited to the same capacity of the current battery?
Also, any recs on the casing? The one I have now won't fit a large deep cycle marine battery...
I was also considering hooking up 2 or more batteries in a parallel circuitry. Does anyone foresee any concerns with this?
Any and all tips and recs appreciated.
"Fix it 'til it Breaks."
Jacob - EiC & Director of Technology Mac Pro Quad 2.66 - 4GB RAM 160 GB SATA RAID 1 - 650 GB Storage Quad 19" Widescreen LCDs Accessorized to the Hilt
Loc: Stoughton, WI USA
I think those suckers take readings of the voltage, though if it's higher or lower than the stock battery it may freak out and not properly condition power / recharge if there is a failure. Not really a memory issue, but how the hardware is on the board.
It's worth a shot if you have a spare laying around. Worst thing that can happen is that it fails... well that or explode. I suppose exploding would be the worst.
If it doesn't work, call a battery store and check how much a new cell at that range would cost.
As I understand it, 'smart' batteries cannot measure the charge currently contained within themselves (there is something awful about that sentence, but I think its OK).
The charge is measured as it enters and leaves the battery. When you recalibrate a battery by charging it full, discharging fully, then charging fully again this resets the 'charge-o-meter' to 100%. Thats how Apple laptop batteries work at any rate. If yours is as smart, it should be able to recalibrate itself to a new battery. I confess I don't know much about the variations of currents and voltages used to recharge batteries and their associated tolerances. I would guess that a nasty miscalculation of this is the sort of thing that could make a battery explode. 3rd party batteries with higher capacities seem to work fine with Apple PMUs, SMCs etc. As far as I know, the electronics are identical to Apple batteries but the actual cells are upgraded.
Loc: Florida, USA
For 12volts most fuses are 7.5, 10, 20 and 30 amps. If you use something that needs a crap load of amps or wattage then 40 or 50 amp fuses are needed. For examples my carputer power supply uses a 10amp fuse and I also modded my gaming PC's power supply to use 10 amps for 12 volts and 7.5 amps for 5 volts for the DC outputs. My car amp uses a 40amp fuse for the main power but the amp has a 15 amp fuse. So if theres a power surge the 15 will blow first and if it effects my main power the 40amp will blow.
Your UPS is nothing more then a power inverter with a battery. It turns 12 volts DC into 120 volts AC. When it's plugged into the wall it's going into two way. Straight power to the device and also into a battery charger keeping the battery charged.
The UPS should have a voltage regulator so you shouldn't really even need a fuse but I would add one just for as a safety. Last thing you need is to test it or wait for a power outage and too many amps end up into the PC or even into the battery.
Xplain's use of MacNews, AppleCentral and AppleExpo are not affiliated with Apple, Inc. MacTech is a registered trademark of Xplain Corporation. AppleCentral, MacNews, Xplain, "The journal of Apple technology", Apple Expo, Explain It, MacDev, MacDev-1, THINK Reference, NetProfessional, MacTech Central, MacTech Domains, MacForge, and the MacTutorMan are trademarks or service marks of Xplain Corp. Sprocket is a registered trademark of eSprocket Corp. Other trademarks and copyrights appearing in this printing or software remain the property of their respective holders.
All contents are Copyright 1984-2010 by Xplain Corporation. All rights reserved. Theme designed by Icreon.