hello,
i want to replace batteries in that lock https://nuki.io/en-001/products/smart-lock-go with PSU ; its 4xAAA so assuming 6V
but is there a way how to estimate how many Ampers should have PSU?

Thanks!

 

hello,
i want to replace batteries in that lock https://nuki.io/en-001/products/smart-lock-go with PSU ; its 4xAAA so assuming 6V
but is there a way how to estimate how many Ampers should have PSU?

Thanks!

The only way is to measure the current draw. I am going to guess 50 to 100 mA.

 

A triple A battery typically has 1 to 1.2 amp hours. I'm going to agree with @MrChips, 50 to 100 mA.

I am going to guess 50 to 100 mA.

 

The only way is to measure the current draw. I am going to guess 50 to 100 mA.

I am going to get onboard with that also. Just remember if you go with a mains powered supply that sans a backup, if you lose power the lockset no workie, workie. A 6.0 volt 1.0 Amp supply would likely be adequate.

Ron

 

Certainly a 6 volt dc SUPPLY WITH THE BATTERYS as a backup would work. ADD a N.O. pushbutton to back up the mains powered source if there is a power outage. Not to operate the unlatch, but to power the input during a power failure.
That higher current draw would only be during the actual unlock sequence.
Consider that those AAA sized batteries will mostly be providing a very low current to that non-activated lock circuit, the majority of the time the lock will not be consuming more than a very few milliamps. This is based on the guess that in that product the battery life is intended to be many weeks. The higher current draw will be during the actual time that the lock is being released.

 

@Reloadron that psu will be attached on UPS battery backup its okay and still there is option to manually open the door so its fine.

I contacted the manufacturer - they dont know draw.

The reason why i need to know it is to buy a proper Polulu brick ...
So 6V / 1A brick from core 24V (10A) psu is good to go?

Thanks

 

So 6V / 1A brick from core 24V (10A) psu is good to go?

My best guess is yes. I would likely use a 2 amp supply only because there isn't much difference in cost. However, 1.0 amp should suffice just fine.

Ron

 

Why do you want to go to supply power?
Have you experienced short battery life?

 

@crutschow just tired constantly removing / charging /.. monitoring state... if there is option just plug it on PSU. thx