wrx-killer-Sti-eater

iTrader: (1)

I been having issues and so have many about the battery that the dei 520t unit comes with. And after countless and countless come backs and user issues I started testing them out. A couple a months ago. I should really say 9 months ago. I swapped out the dei 520t back up battery for a bigger battery. One like this.


http://www.action-electronics.com/pdf/ps1212.pdf






I started using power sonic instructions for charging the battery before install and it seems to help out greatly. I have performed two different type of test so far. Using the battery from the condition that it comes from the store. And using a the battery after charging it to the condition below

Cycle Applications: Limit initial current to 200mA. Charge until battery
voltage (under charge) reaches 14.40 to 14.70 volts at 68oF (20oC).
Hold at 14.40 to 14.70 volts until current drops to approximately 8mA.
Battery is fully charged under these conditions, and charger should
either be disconnected or switched to “float” voltage.
“Float” or “Stand-By” Service: Hold battery across constant voltage
source of 13.50 to 13.80 volts continuously. When held at this voltage,
the battery will seek its own current level and maintain itself in a fully
charged condition


The test also included installing the battery in the car 'of course' and simulating a thief unplugging the battery and letting the car sit over night with the battery unplugged. parking lights still working. So here is the outcome.

Dei 520t standard battery-

Straight out the package no charged- Failed! Would not charge back up. If did charge back up the siren would be weaker then it was before it was. Would shut the alarm down in 10 min. Range fell greatly for remote!

Charges the unit to p/s instructions-

Unit would charge back up. Battery did not have full strength. Would last about 20 mins and die. Did not have a memory like results above. Would recharge over and over from a dead state. Each time getting weaker. Range on alarm dropped when unplugged from main battery!(3 tries)


Using a power sonic 1212 battery straight from the store-

charged right back up from a dead state and kept a charge. Charged right back to shelf like condition. Siren was not that noticeable weaker. No ill effect on range.


Charging the unit to p/s instructions

No ill effect, range on alarm was similar to still being on car battery. Charged back up with no memory. No loss of siren tone.


Test was done with 2 power sonic 1212 batteries and 2 dei 520t batteries.


I will be trying a different brand of batteries from this company

http://www.zbattery.com/Batteries/12V

There long life
http://www.zbattery.com/Batteries/Ge...Lead-Batteries

and there high discharge cycle

http://www.zbattery.com/Batteries/Hi...Acid-Batteries


I will not be purchasing them from the company above but thru a local vendor that carries them. I will update as soon as I have new information. Please feel free to ask any questions.

zsudz922

how big and heavy are these batteries compared to the 520t?

Tekkaboy

iTrader: (2)

From the spec sheet it says 3.8x2x2.3" and 1.32 pounds.

Good info, I will probably pick one up.

wrx-killer-Sti-eater

iTrader: (1)

I KNOW THAT NUMBER!, lol


That was less then 15sec of the trigger going off!

dohcvtak

iTrader: (1)

:D
-ultimately i would just upgrade to begin with to avoid future problems and having to tear through everything just to add it in.

nsxxtreme

The problem with the 520t's that I have always found is they usually dont have the appropriate amount of acid in them. I've had varying success some cells are full some 1/4 full and some 1/2 full. This seriously effects these batteries. I've given up on DEI batteries and its the first thing I replace with a house alarm battery. If you can find a deep cycle version that is preferred. Normal lead acid batteries do not survive to many cycles being drained dead.

wrx-killer-Sti-eater

iTrader: (1)

Yes, they are just not reliable. The unit performs as it should just junk batteries, I going to try out the h/d from here. I just ordered 6 of them and will provide some feed back as soon as I can.

http://www.zbattery.com/Batteries/12...4Pa38Ta38Sbxj0


I also like the the bigger battery as it is 1.7 amps compared to .7 amps.

c|rop3asy==[]

so did you happen to find which battery to use?

SQ is the SQUAD

how well do you think a motorcycle battery will hold up?

nsxxtreme

That is way more then you would ever need.

SQ is the SQUAD

ok, so if i go to raido shack i just just ask for a basic small 12v battery? well let me test my 520t one first. also what diode do i need for the blue wire. i have some diodes form a ecui chipping kit i had, not sure if they are all the same

b20_driven

You're talking about this battery right? http://www.zbattery.com/Universal-12...category=62965

djkurious

Question, how would someone wire this battery into the alarm?

Wookie384

Any updates on this topic? I would like to replace the faulty 520T battery in my buddy's Integra this week and I would like to know which batter would be best.

kleen98accord

iTrader: (1)

Any directions on how to replace the current 520T with is so new battery?

yessewey

iTrader: (2)

try a 12v 1.3Ah battery, thats what i've been using and it has worked MUCH better than the original battery. I still actually get a response from the remote when the main battery is disconnected and the siren doesnt sound weak when running off of the backup battery only.

yessewey

iTrader: (2)

just snip off the plug from the original battery and connect it to the new battery, thats what i did. you can use some female connects since most of those replacement batteries have metal prongs to connect to, just make sure they have the little plastic covers so you dont cause a fireworks show in your car if they so happen to contact some metal.

EnjoyTheRideDC2

iTrader: (1)

Either pick up a new 0.8ah Lead Acid battery
http://www.zbattery.com/Universal-12...category=62965

Or if you can hide it well, use a 1.3ah 12v Lead Acid Battery and do as yessewey directed.

Those are the only 2 options I would suggest for a 520T battery replacement.

wrx-killer-Sti-eater

iTrader: (1)

You should not have any problems hiding a 1.3 battery. Just extend the battery lead.

bankonyourself

Everyone should checked their back-up battery to make sure its still charging and working. You don't want it to be that one time they take your ride and your back-up battery is dead.

zerovandez

iTrader: (1)

Would it be possible to use a 12v RC Car/Airsoft Battery setup?

djkurious

Yes, it is possible but those batteries don't do too well with heat if you are talking about Lith-ion, Nimah, or Nicad. Go with lead acid. I had the same thought also, since I have about 12 NIMAH's and 6 Lithium's laying around for me E-Revo.

EnjoyTheRideDC2

iTrader: (1)

No, it wouldn't....Unless you had its own charging system for the RC/AS battery wired into the car. That alone already throws up a red flag. I'm not sure those batteries would even be reliable considering the unpredictable charging cycle it would be experiencing day after day and with their rated amp hours, who knows if it'll last an 8 hour night?

If it were practical, someone would've popped one onto the market by now. Ya know? For what directed wants for the kit and with a replacement battery reasonably priced, I'd save myself the time.

zerovandez

iTrader: (1)

Thanks. How about any SLA battery regardless of the Ah? I have a 12v 7Ah battery but haven't connected anything yet.

djkurious

That will work. Just hide it.