Hi all.

Anyone check and or replace their Security System Smart Siren (Backup) Battery?

When I pulled my 40amp fuse, my alarm was activated and the siren ran for maybe 10 seconds (the last five chirps were sounded like the system was dying).

I found the HD replacement (see attached photo) at a discount HD... as I know damn well Chester's HD in Reno will tack on at least 25% ADP.

Anyways... I don't think the Security System Smart Siren II rechargeable battery has ever been replaced. So, I cracked it open and found the following rechargeable battery (http://store.gpbatteries.com/us/inde...uec1-8864.html). On a side note, I selected the battery and put in my zip code... that 10.28 battery came to 35.28 with shipping. F that.

I put the bastard in my charger. Yellow light came on and it started charging then the red light came on 15 seconds later. The battery is just dead.

Its a GP Industrial Rechargeable NIMH 9V PN 20R8H. The mfg states "Can be charged up to 1,000 times" whereas Energizer has one Rechargeable NIMH 9V batteries for $15.47 at walmart which says it can be charged 1000 times.

I did end up buying the batter for 9 bones shipped (no tax) at DealsMachine.com (http://www.dealsmachine.com/best_146053.html).

I called my buddy and he did the same thing and said his siren ran for 25 seconds.

Maybe it doesn't amount to a hill of beans if the security system is using juice directly from the battery (at all times) but I'd rather have any system functioning as intended in the event the main battery gives way.

 

Did you notice that the nominal voltage for the battery you purchased is 8.4 volts? Where as the GP is 9.0 volts?

 

Good question in regards to the GP Batteries website... that same part number comes up at 9v.

The one I got from Deals Machine came in and I was going to charge it. (didn't think it would ship charged)... Anyways, being that I was in the garage and didn't feel like going up the stairs and dealing with the kiddos... I did test and it registered 8.4v

 

Charge it be 4 you use it is always a must.

 

It is a self charging system but after reading your post... just to make myself feel better... I took it out and am charging the new 9v on my kiddos battery charger.

 

One sign that a new battery is needed is the siren will chirp 3 times instead of 2 times when the ignition is turned off. I got my replacement battery at batteries+ for a nominal fee. Much less than HD.

 

Great post. I change the fob batteries regularly but never thought about the siren battery. I'll put that on my list for things to do this winter along with other maintenance items like changing the fork oil and brake fluid.

 

before you go pulling the battery out of your siren, deacitivate your security system. to do this, first turn your ignition on (with fob in hand) and when your security disarms, then pull your maxi fuse. you can now shut everything back off, and your siren will not scream at you when you disconnect it.... after completing the work, put your maxi fuse back in.

this procedure works if you have to change your vehicle battery as well, as the siren will scream as soon as you disconnect the cable from your battery.

 

Alkaline batteries are A, AA, AAA, C, &. D are 1.5 v and if you replace it with a rechargeable the rechargeable will be 1.2 v. Same with 9v with alk is 9v and rechargeable will be 8.4 v. They are alway less for rechargeable so I don't think they made a special battery just for this application. Rechargeable's are also shorter so that if a electronics needs a specific battery voltage to work it will not make contact as the battery is a fraction shorter and they don't use springs at the neg side. If it fit it should work with no problem.

 

Harley lists the replacement battery for the Sirens for about $16, it's just a 9V nominal Nimh battery, any such batttery should work fine as a replacement. The Harley supplied battery is supposed to have a life of between 3 and 6 years. No need to charge it before use unless you want to, riding the bike several hours should charge it.