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Posted

I have a Victorinox "Aerospace" with the ETA 988.333 movement. It works fine except it eats a battery in 2 weeks. It starts flashing the digital display indicating low power.

I've used Energizer and Renata batteries (both die), I've checked the 2 insulators under the battery (present), and I've tried putting parchment paper under the case back and another piece under the "tab" that is supposed to touch the speaker, thinking maybe it was touching something and draining.

I have no other bright ideas. I bought the watch used and it's done this since I've owned it.

Is there something I should be checking?

Posted (edited)

Welcome to the forum.

What batteries are you using?

Edit

I mean SR920W or SR920SW, presuming you're using silver oxide?

Edited by AndyGSi
Posted
18 minutes ago, AndyGSi said:

Welcome to the forum.

What batteries are you using?

Edit

I mean SR920W or SR920SW, presuming you're using silver oxide?

Thanks!

They are Renata 371/SR920SW or Energizer 371/370, both Silver Oxide. Fairly standard ones I’ve used in other watches.

Posted
52 minutes ago, Neverenoughwatches said:

Extra drain on the battery due to needing a service.....friction

I wondered about friction due to age…but I’ve got a Seiko from 1971 that has never been serviced and it’s fine. This watch is much younger, and doesn’t even have a ticking seconds hand.

Posted
1 hour ago, AndyGSi said:

I know they say the SR920SW is the correct battery but I always go for the SR920W on anything digital.

How is it for keeping time?

It keeps good time and everything functions. The alarm is super quiet which was a complaint when it was first released, but otherwise it’s fine.

I ordered some 920W to try.

  • 1 month later...
Posted
On 4/13/2025 at 7:54 PM, AndyGSi said:

I know they say the SR920SW is the correct battery but I always go for the SR920W on anything digital.

How is it for keeping time?

Tried a SR920W and its completely dead after 3 weeks 🤷‍♂️ 

Posted

I fixed a friend's Omega with a quartz movement.  It had had some water ingress and every time she changed the battery it wouldn't last long. There was no obvious damage to the movement but there was some rust on the stem and I could see a water stain on the dial under magnification,
The watch basically needed a service - the train of wheels did not run freely but after I disassembled, cleaned and reassembled and put a new battery in it worked fine.

Posted

Hi welcome to the forum, the problem as explained is excess current drain. Usually caused by a dirty movement needing a good service. Th that end I have attached the service sheet to assist .  A build up of dirty oil in the jewels or the rotor collecting debris all these things contribute .

3385_ETA 988.333.pdf

You will find the current specifications on the sheet,  you will need at least a multimeter capable of reading micro amps to check the consumption.

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