Ventilation of battery

[rbeemer]

Dwayne,

an Uniteruptable Power Supply(UPS) battery is used in a lot of server/computer backup plans. If the power goes out the UPS system kicks in and provides enough power to run the system for a short time period. Most companies use that time to gracefully bring the system down so that there is minimal data lost.

[sdtripper2]

Cary,

What is a "UPS" battery? Around here, UPS stands for United Parcel Service.
I did already purchase a lead acid battery from Interstate Batteries. I don't know if they have access to the kind of battery you are talking about and if they will exchange this one.

Duane

uninterruptible power supply (UPS)

How does a computer's uninterruptible power supply (UPS) work?


What are Starting, Marine, and Deep-Cycle Batteries

The Ultimate Deep Cycle Battery FAQ

(AMG) Absorbed Glass Mat Batteries

Question:
What type or size 12 Volt battery should I get for my trailer.
Answer:
The short answer is a deep cell type 27 battery.
Battery Size?
Car starter vs. deep cell battery?
***

Battery Tutorial

[Duane King]

Thanks everybody!!!!

On revisiting this topic, I have taken a closer look at the geometry of my trailer. I think I can use the really cool idea of mounting my electrical in an adjacent box. The battery will be sealed off from the rest of the electrical system and vented to the outside.

My electrical panel will then be mounted to a hinged door that swings into the sleeping compartment for easy access to the wiring. Thank you all for keeping me from either blowing up or dying from inhailing hydrogen gas in my sleep.

Duane

[Duane King]

Steve,

Thanks for the advice about putting the electrical panel in a door. After looking at all of the possibilities, I can see that your idea will work best in my application. This evening I routed a nice door opening down at the foot of my bed and even cut out the door that will fit in the opening. The circuit breakers will trip if I kick them while sleeping. But rather than build another door, I have decided to cut a piece of plexiglas that is half the width of my breaker panel. This plex piece will slide to the left to cover the switches or slide to the right to expose the switches if I need to reset them.

I'll post a picture when it is finished. Thanks again to you and everybody else that helped.

Duane King

[Cary Winch]

Looks like Rick beat me to the punch on what UPS stands for.

Steve,

There are several ways that UPSs are built. They all use an invertor that converts the battery voltage to AC power. They are switched on by a fast solid state switching circuit. This is where they vary from model and brand, everyone has their own propietary method for doing the switching. Usually this where the big differences is. The type of inverter and how good a wave pattern is also a big factor.

Then there are the pass through types. The company I worked for was famous for this system. It was done with a large ferroresonant transformer. The power was passed through the transformer all the time. This had the added benefit of conditioning the power all the time, knocking down surges and dips in line power. Then when it switched to battery power the transformer in conjunction with capacitor bank helped reduce the switching time to basically zero. They are big and heavy systems but truly the best method out there. This method also had the benefit of giving a true sine wave output compared to the square waves found normally from invertor equipment. And also a much higher effeciancy. As many of you know from using invertors they really are not very efficiant where as most ferroresonant systems are up in the 90% range of efficiancies.

So, was this way more info than any one wanted to know? Heh heh.

Cary