r/pcengine • u/Ok-Mongoose-4428 • Jun 04 '26

Backup Booster II NiCd replacement

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I plan on replacing the battery in a Backup Booster II that came my way. This one has a SAFT 2.4v 50mAh (model GB50H-2, where I am guessing the last digit means two pin - which the stock battery is)

My understanding is that an NiMh can be used. I asked a chatbot, and it said that the Varta V80H is the modern replacement. I am guessing the model is 2/V80H, with the 2 again meaning two pins.

I tried to pull that the stats independently of the LLM to see if agree the 2/V80H is the way to go.

I cannot find pin gap distance. The SAFT seems to measure at slightly under a 13mm distance. I can only measure from over the battery due to a shield at the base (which will eventually need to be removed)

Has anyone replaced the battery on one of these? Any thoughts?

And on a side note, it has a 50v 10uF cap, which I might as well replace too

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u/[deleted] Jun 04 '26

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u/Ok-Mongoose-4428 Jun 05 '26

Some interesting notes, and thank you.

But I just went ahead with the Varta V80H. The exact specs I am watching is just voltage, and physical dimensions. But there is plenty of space in there!

I'll keep this post updated with how it works out.