What battery does this take?

boardtc

I was not able to identify the battery for this Halloween decoration, and we have another that takes same MN11 was too small.


Does anyone recognise the battery it takes?

ozmo

Id say its lots of watch batteries.
Look really carefully behind the springs - you will see the direction to put the stack of batteries and how many.

Dealz sell a pack of them cheap.

What would be better would be to add some wires and connect up the equivalent AAA batteries - will last much longer.

ted1

Might take 3 cell batteries like LR44. It should say so on the battery cover

fred funk }{

Could be a cr2.

boardtc

ted1 wrote: »

Might take 3 cell batteries like LR44. It should say so on the battery cover

Unfortunately, it says nothing on the cover except CE....

boardtc

fred funk }{ wrote: »

Could be a cr2.

I got excited thinking this was it!
Looking at https://www.batteryjunction.com/batteries-size-cr2.html they are 27mm x 15.6mm and the battery space in these yokes measures about 17mmx 11mm :mad:

A Law

I'd be fairly sure it's 2 or 3 of an lr44 type of battery. Deals is your best bet, they have packs with a collection of a few different types.

ted1

boardtc wrote: »

I got excited thinking this was it!
Looking at https://www.batteryjunction.com/batteries-size-cr2.html they are 27mm x 15.6mm and the battery space in these yokes measures about 17mmx 11mm :mad:

I still suspect it’s 3 lr44 batteries

11.6mm in diameter and 5.4mm thick. = 16.2mm x 11.6

Alun

boardtc wrote: »

... the battery space in these yokes measures about 17mmx 11mm :mad:

The size of the MN11 battery in your picture is quoted as 16mm x 10mm so I'm surprised it doesn't fit??

Alun

ted1 wrote: »

I still suspect it’s 3 lr44 batteries

11.6mm in diameter and 5.4mm thick. = 16.2mm x 11.6

A lot of these smaller batteries are made from several button cells shrink-wrapped together anyway.

boardtc

joefuss1986 wrote: »

I'd be fairly sure it's 2 or 3 of an lr44 type of battery. Deals is your best bet, they have packs with a collection of a few different types.

Thanks for the kick again, I got my finger out, had some of those (equivalent AG13) on a sheet. I stuck them into both of the yokes but no power :mad: They seem an ideal fit. I was trying to avoid throwing out more plastic crap but what can you do!

Alun

There are button cells that are the same diameter but thinner. Maybe it needs 6V to operate so you'd need 4 x 1.5V cells, something like an LR43 which is 4.2mm thick so 4 would be 16.8mm.

ozmo

boardtc wrote: »

Thanks for the kick again, I got my finger out, had some of those (equivalent AG13) on a sheet. I stuck them into both of the yokes but no power :mad: They seem an ideal fit. I was trying to avoid throwing out more plastic crap but what can you do!

Correct batteries - but think they might be upside down - the larger silver end is +ve
Flip them other way round and try again...

Alun

ozmo wrote: »

Correct batteries - but think they might be upside down - the larger silver end is +ve
Flip them other way round and try again...

If that was a normal cylindrical battery though, they'd be the right way round. The end with the spring would be -ve.

ozmo

Worth considering doing this though.... you can get the battery pack (with attached Christmas tree lights) for 1.50 in dealz - 1 set of batteries will last Months. link

Ideally of course solder is best - but even duct tape or wrapping the bared ends of the wires to the contacts would work. 3 LR44 batteries would be 4.5 volts - but a holder of 2 AA's giving 3V should work just fine, maybe a little dimmer.

https://www.youtube.com/watch?v=e3aTknE250w

ozmo

Alun wrote: »

If that was a normal cylindrical battery though, they'd be the right way round. The end with the spring would be -ve.

Yes, with button cells it always seems to be made so there is minimal chance of shorting the + and - of the battery.

Here, if you look at the photo, the spring runs the risk of touching the outer (+) and the small (-) of the battery.... so it makes sense to design so the spring is for the larger (+) terminal where it cannot touch both sides of the battery - shorting it out.

boardtc

ozmo wrote: »

Correct batteries - but think they might be upside down - the larger silver end is +ve
Flip them other way round and try again...

I did try the other way at the time, no result:mad:

boardtc

Alun wrote: »

The size of the MN11 battery in your picture is quoted as 16mm x 10mm so I'm surprised it doesn't fit??

I had another go and they do fit but neither set work, which before I thought was too coincidental but at this point they are both just broken and time to put more plastic in the bin and kill off this exercise!!

boardtc

ozmo wrote: »

Correct batteries - but think they might be upside down - the larger silver end is +ve
Flip them other way round and try again...

To close of the post, this turned out to be correct and Primark finally confirmed the batteries too. I cleaned the contacts, for both yokes, one of the batteries needs to be protruding or something for the lights to work, nt sure why. Put away in the Haloween box now anyway. Thanks!