Yes, good too. I have a mix of off board batteries and memory caps. I have the off board battery packs on my System 11s, Ballys have memory caps. I have a memory cap on DE Secret Service. Cue Ball Wizard and Revenge from mars have lithium coin cells.

I bought these Energizer batteries last year because I was concerned with leaking. Problem I had was after spending $50 on these batteries, 70% of the batteries had lost their power. My games were resetting to factory defaults. Checked all batteries with multi tester and they were either dead or almost dead. I bought them at Walgreens and their expiration dates were like 2021. Energizer company sent me a $15 voucher to replace them. I didn't replace them with lithiums, lost faith. Disappointed because I was concerned about acid and thought they were the answer.

Sounds like you got a faulty batch. That's really unfortunate.

After reading your post I checked my lithium's with a multi meter and they seem fully juiced.

Bit of an old thread, but have a customer having an issue with a remote battery holder in his cyclone. I believe cyclone is a system 11b, which should be positive terminal in lower left and negative in upper right. Can anyone confirm? Thx

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Pull out a multimeter and measure which one is connected to ground. That’s the negative one.

This is for a customer that doesn’t have technical experience, not for me. I’m pretty sure it’s right, but can’t figure out why his game isn’t holding settings.

Well you can see the + and - on the board. Is this a photo of the actual board? Perhaps the batteries in the remote holder have leaked, dead, dry solder or broken connection etc. they should try putting some fresh batteries in the board itself.

Yes, the orientation is correct. The only true way to ensure the retention voltage is getting to the ram and that there is not some other problem (i.e. open trace, bad diode etc.) is to measure the dc voltage directly at U25 (pin 24, expect something more than about 3.0 V for retention voltage)

You could always replace the RAM with NVRAM, get rid of the hokey spring clip external battery holder that can have a voltage drop, and be done with it.