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Questions tagged [battery]

For questions on batteries and battery technology in retrocomputing hardware

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29 votes
3 answers
22k views

Why do Game Boy Colors not want nickel-cadmium batteries?

This is a page from the manual for the Game Boy Color: There is no explanation as to why this is, or how this can be, but it claims that one must not use rechargeable nickel-cadmium batteries. Why is ...
Bacus's user avatar
  • 291
21 votes
4 answers
9k views

Why are the Nintendo 64 memory cards' batteries *soldered* on?

After recently learning that it has a battery inside of it, I unscrewed my Controller Pak (N64 memory card) to put in a new battery. The old one says "98" on it, referring to 1998. So it's ...
user23842's user avatar
  • 211
18 votes
1 answer
4k views

Game cartridge save-game battery lifetime

Some cartridges on older consoles (like on the SNES) had battery save in them, so you can turn off the console, come back some time later and continue where you left off. These use an actual battery ...
Bálint's user avatar
  • 1,103
17 votes
4 answers
1k views

Appropriate battery replacement for my A3000

I know the interwebs are full of information relating to the replacement of batteries for various computers, and the Amiga's are no different. But before I do anything rash, I wanted to ask for some ...
Geo...'s user avatar
  • 10.4k
16 votes
1 answer
2k views

Why did the Rumble Pak for the Nintendo 64 require batteries when it actually apparently doesn't?

After watching this video tutorial: https://www.youtube.com/watch?v=AyJsOoQKRjQ I'm wondering what the whole deal was with the batteries. Apparently, you can resolder the circuit board inside the ...
Trawn's user avatar
  • 161
13 votes
2 answers
525 views

What is stored in IIgs BRAM?

What is stored in the IIgs BRAM? I'm going to replace my BRAM battery in a ROM 03 IIgs and that got me thinking about what is stored in BRAM. I know that date and time are stored, but not if all the ...
Michael Shopsin's user avatar
13 votes
3 answers
499 views

Dealing with old laptop batteries?

So, I inherited this old Epson Equity LT... It's a laptop with internal Ni-Cd batteries. No battery quick disconnect, but apparently they're at least somewhat removable as the manual says that you ...
Brian Knoblauch's user avatar
11 votes
3 answers
6k views

Restore corroded AT motherboard with dead CMOS battery

I have acquired a nice MS-DOS PC from EET Computer (I couldn't find any information about them). It actually works, but I have two errors on boot: Floppy disk drive controller failure; CMOS Battery ...
Informancien's user avatar
  • 2,667
9 votes
1 answer
2k views

What's the point of the CPS-2 suicide battery?

The CPS-2 arcade board contains a suicide battery that will force the board to kill itself when it runs below a certain power threshold. Supposedly this was created to mitigate piracy of the games, ...
Badasahog's user avatar
  • 4,081
9 votes
1 answer
443 views

Powerbook (140, 170) battery dimensions/components/specs for reverse engineering

I have a PowerBook 140 that — apart from a dead screen requiring the inevitable capacitor replacement — seems to work well. It has no battery, though, and any available battery will likely have 25+ ...
scruss's user avatar
  • 22k
5 votes
1 answer
248 views

What are best techniques for repairing a chemically damaged PCB?

I have rescued many retro computers from the hazards of leaky batteries, and occasionally replaced capacitors that were suspicious. Except for one still unusable Mac SE/30, all my repairs were done ...
Brian H's user avatar
  • 61.5k
4 votes
2 answers
930 views

How to replace battery for old AT mainboard?

On my 286 board, the CMOS battery is missing – as with most boards of that age. I see no other battery connector on the board. However I would love to fit a battery in there, so that I do not have to ...
Arne's user avatar
  • 1,274
4 votes
2 answers
2k views

How to work around the PRAM battery for a "Titanium" Powerbook G4

Years ago I was the original owner of a "Titanium" PowerBook G4. Eventually, the unit bricked itself and refused to power on. Some quick research at the time led me to believe the PRAM battery was ...
Geo...'s user avatar
  • 10.4k
4 votes
2 answers
486 views

Can you replace an Apple IIgs battery with regular AA alkalines?

I have a IIgs that I clipped the battery out of a few years back. I'm thinking I want to replace a battery in there, but before I spend money on a product like this one, I'm trying to figure out if I ...
bjb's user avatar
  • 17.3k
4 votes
1 answer
215 views

How do I replace the battery on my Palm Zire 21?

My Zire 21 PDA's battery won't hold a charge for more than a few minutes. How do I replace it?
Mark's user avatar
  • 8,736
3 votes
1 answer
338 views

Did the RTC in certain cartridges get power over the GBA bus?

Some GBA games, like Pokemon Ruby, contained an internal RTC with a small button battery to power it. When the cartridges were inserted and the GBA was powered on, did the RTC continue to run on the ...
forest's user avatar
  • 2,050
2 votes
1 answer
264 views

Can I change laptop's RTC and backup battery with generic Ni-MH?

I got old Toshiba 100CS for a good price. After some inspection, I noticed that AutoResume backup battery and RTC battery are already gone bad, and seems can't hold charge. I've checked eBay for ...
Kamome's user avatar
  • 163