Id say with your 5 yr ageing thats a little high. 7A/h are for lower than that IMO.

Plus bear in mind the A/h rating is calculated at a 24 hour discharge time, not 12 so it wont give that amount of capacity at 12 hours anyway. I know its accepted that we still use that rating as if it was a 12 hour discharge.

Id say with your 5 yr ageing thats a little high.

I did say rough idea.

This is also what Cooper recommend. Probably doesn't include ageing or an activation.

Would normally work it out including an activiton of 15 minutes, myself.

10 x quiescent current gives you minimum battery size for 12hr or there abouts

Pete. Id say 10x day was good for an 8 hour approx, but not a 12?

there is an app that does it for you in the downloads section

http://www.thesecuri...sia-techmaster/

hi james

thanks for the reply, i have tried to down load the app off the download section but it wont open up on any of my computers, can you send me this in another format.

Does it come up with an error message?

yes saying something about a zip file

am i right in saying the following

65En control panel 200mA

Extension speaker 100mA

Deltabell Plusn60mA

Pironix MEQ blue x 19 @11mA 209mA

Keypad 90mA

Msnode x 3 @60mA 180mA

Total 839mA

i am going to use the on board communitcator to connect to the ARC

dose this mean that i will require an additional power supply to provide an additional battery as a 7AH battery wont be enough

if im correct and please correct me if i am wrong would i require a 7AH battery in the alarm panel and a 3AH battery in the additional power supply

all views apprecieated

can you fit a bigger battery?

And have you unzipped the file?

what size are you thinking?

it says that the file is invalid tried it on laptop and desktop both the same