Electronic geek question about UPS batteries? - GoFuckYourself.com

suesheboy · 01-30-2012, 08:00 AM

We all have UPS?s (don?t we?) and in time these small batteries just give out.

Wondering if rewiring a UP to charge a car or marine battery would give me a far longer ?battery time? during power outages or would the extra amperage fry the UPS or damage anything hooked up to it?

The cost of a car battery is only a few dollars more than one of these disposable pieces of shit that only last a few minutes.

iwantchixx · 01-30-2012, 08:09 AM

my ups is going on 7 years old and still runs strong as it was when new but no, do not use a marine or car battery. They can leak fumes that are explosive and highly poisonous. yes, even the sealed ones.

Freax · 01-30-2012, 08:30 AM

a lot of people in asia use ups systems with car batteries. but you need a seperate controller, similar as those for solarchargers and a car battery charger. your ups can't charge the big ones! do a search in internet for DIY ups

suesheboy · 01-30-2012, 08:33 AM

Wow. Thanks for the fast and good answers.

raymor · 01-30-2012, 08:48 AM

UPS batteries are the same chemistry as sealed marine batteries. Two issues arise. One is charging current. The UPS can't charge a battery much larger than it's designed to. 20% larger shoulda be fine, though. Many large UPS systems have a connector to add an extra battery though, and those are designed for the extra current.

The other issue is discharge current - a larger battery will let the UPS run longer, but won't let it run more equipment. A UPS designed to power one desktop for ten minutes can NOT safely power three desktops for three minutes. Therefore adding batteries or using a larger battery only means it can run longer than ten minutes. That really doesn't do you a lot of good. After five minutes, the power probably isn't going to come back on any time soon, so it's time to shut down. Neing able to run from UPS for twenty minutes instead of ten just doesn't do you much good.

raymor · 01-30-2012, 09:16 AM

Despite the caveats mentioned above, many people do it, uating a deep cycle marine battery. Car batteries are designed to price a lot of power for a few seconds to start a car. Boat batteries are designed for longer use. You should make sure the battery is fully charged before connecting it so the UPS doesn't have to charge that big battery, just keep it charged.

You should have a fuse installed at the battery terminal and use a battery box with a small fan added to catch any leakage while dissipating any fumes.

V_RocKs · 01-30-2012, 10:05 AM

Just spend the extra $30 and get a UPS...

suesheboy · 01-30-2012, 01:02 PM

Thanks for the additional information.

I have a UPS for laptops that runs each of my weather stations, add to that a bigger battery and I can capture and transmit lots more data. The more brutal the outage created by a storm, the more important the capture and transmit of data is!

Just checked the "status" and it shows 14 "blackouts", and 4 electrical noise events in the past 20 weeks.

01-30-2012, 08:00 AM	#1
suesheboy Confirmed User Industry Role: Join Date: Nov 2002 Location: FL - TN/NC Posts: 5,211	Electronic geek question about UPS batteries? We all have UPS?s (don?t we?) and in time these small batteries just give out. Wondering if rewiring a UP to charge a car or marine battery would give me a far longer ?battery time? during power outages or would the extra amperage fry the UPS or damage anything hooked up to it? The cost of a car battery is only a few dollars more than one of these disposable pieces of shit that only last a few minutes. __________________ Adult Web Site Domain Names For Sale Adult Sex Toy Domain Names For Sale Tantric Delights, Sex Toys Blog, Tantric Sex Toys

01-30-2012, 08:30 AM	#3
Freax Confirmed User Industry Role: Join Date: Feb 2011 Location: Somewhere out there Posts: 191	a lot of people in asia use ups systems with car batteries. but you need a seperate controller, similar as those for solarchargers and a car battery charger. your ups can't charge the big ones! do a search in internet for DIY ups __________________ We sell and buy Content, Domains, WebHosting VPS Servers Worldwide, WP Adult Design + Optimation, Bitcoin Payment Processing. SOCIALMEDIA MARKETING - FB FanPages, FB Groups & Advertising. EMAIL: freax(at)tutanota(dot)com

01-30-2012, 08:33 AM	#4
suesheboy Confirmed User Industry Role: Join Date: Nov 2002 Location: FL - TN/NC Posts: 5,211	Wow. Thanks for the fast and good answers. __________________ Adult Web Site Domain Names For Sale Adult Sex Toy Domain Names For Sale Tantric Delights, Sex Toys Blog, Tantric Sex Toys

01-30-2012, 08:48 AM	#5
raymor Confirmed User Join Date: Oct 2002 Posts: 3,745	UPS batteries are the same chemistry as sealed marine batteries. Two issues arise. One is charging current. The UPS can't charge a battery much larger than it's designed to. 20% larger shoulda be fine, though. Many large UPS systems have a connector to add an extra battery though, and those are designed for the extra current. The other issue is discharge current - a larger battery will let the UPS run longer, but won't let it run more equipment. A UPS designed to power one desktop for ten minutes can NOT safely power three desktops for three minutes. Therefore adding batteries or using a larger battery only means it can run longer than ten minutes. That really doesn't do you a lot of good. After five minutes, the power probably isn't going to come back on any time soon, so it's time to shut down. Neing able to run from UPS for twenty minutes instead of ten just doesn't do you much good. __________________ For historical display only. This information is not current: support@bettercgi.com ICQ 7208627 Strongbox - The next generation in site security Throttlebox - The next generation in bandwidth control Clonebox - Backup and disaster recovery on steroids

01-30-2012, 09:16 AM	#6
raymor Confirmed User Join Date: Oct 2002 Posts: 3,745	Despite the caveats mentioned above, many people do it, uating a deep cycle marine battery. Car batteries are designed to price a lot of power for a few seconds to start a car. Boat batteries are designed for longer use. You should make sure the battery is fully charged before connecting it so the UPS doesn't have to charge that big battery, just keep it charged. You should have a fuse installed at the battery terminal and use a battery box with a small fan added to catch any leakage while dissipating any fumes. __________________ For historical display only. This information is not current: support@bettercgi.com ICQ 7208627 Strongbox - The next generation in site security Throttlebox - The next generation in bandwidth control Clonebox - Backup and disaster recovery on steroids

01-30-2012, 08:09 AM	#2
iwantchixx Too lazy to set a custom title Industry Role: Join Date: Oct 2002 Location: The Boonies Posts: 12,860	my ups is going on 7 years old and still runs strong as it was when new but no, do not use a marine or car battery. They can leak fumes that are explosive and highly poisonous. yes, even the sealed ones.

01-30-2012, 10:05 AM	#7
V_RocKs Damn Right I Kiss Ass! Industry Role: Join Date: Dec 2003 Location: Cowtown, USA Posts: 32,409	Just spend the extra $30 and get a UPS...

01-30-2012, 01:02 PM	#8
suesheboy Confirmed User Industry Role: Join Date: Nov 2002 Location: FL - TN/NC Posts: 5,211	Thanks for the additional information. I have a UPS for laptops that runs each of my weather stations, add to that a bigger battery and I can capture and transmit lots more data. The more brutal the outage created by a storm, the more important the capture and transmit of data is! Just checked the "status" and it shows 14 "blackouts", and 4 electrical noise events in the past 20 weeks. __________________ Adult Web Site Domain Names For Sale Adult Sex Toy Domain Names For Sale Tantric Delights, Sex Toys Blog, Tantric Sex Toys