Barrel Battery Blaster: Drop-in replacement for leaky CMOS batteries

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We are putting together a Barrel Battery Blaster. It is a small PCB for a CR2032 Lithium battery that can be used as a drop-in replacement for old NiCd rechargeable barrel batteries.
BarrelBatteryBlaster: github.com/scrapcomputing/Bar...
Music:
Track Stalker from the Duke Duke Dance Party Album
by the Space Quest Historian, Troels Pleimert
spacequesthistorian.bandcamp.com
• "Duke Duke Dance Party...

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24 июл 2024

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Комментарии : 47

@darthtripedacus1 Год назад

I love how the retro community is keeping these old boards alive. Projects like this and the voltage blaster from necroware help keep old machines working with modern equipment

@luca6819 10 месяцев назад

Great job, and the background music a nice bonus! Hail to the king baby!

@conradtrout Год назад

A very neat solution.

@ruthlessadmin Год назад

Awesome. Definitely will be making a bunch of these!

@clintthompson4100 Год назад

This is awesome. I love this.

@Lilithe Год назад

thank you for blasting those accursed batteries 🐸

@MartenElectric Год назад

That's a great idea, I've never thought about this one!

@oldhuntersu Год назад

As usual, great and interesting video from you!

@BrassicGamer Год назад

Such a simple idea. Awesome!

@Inject0r Год назад

Nice! I’ve come up with the same solution a while ago. It’s awesome to see other people having the same solution in mind! GMTA

@gammitinofficial Год назад

Love your videos, just subscribed!

@janpedersen9120 Год назад

thanks for doing this, as you say so much nicer.. i will take this to my projects thanks for sharing.

@Warrentheo Год назад

Looks good, minor improvement would be to flip the vertical for the battery holder, would make removal of the CR2032 easier...

@Dan-TechAndMusic Год назад

You mean with the battery facing to the back of the board? That would make it worse once the board is installed in the case, given the socket would be up against it.

@ctiborkoza8944 Год назад

Nice Video like always 👍

@angelgrig72 Год назад

Very nice! subscribed!

@gordoncreAtive Год назад

I guess you could also solder female pin header to the board for easy access to the Barrel Battery Blaster.

@dosboy Год назад

Very nice! The battery should face the board edge, though, to make it easier to replace

@scrap_computing Год назад

Yeah this makes it a bit easier to replace, but you can always place the battery holder on the other side.

@Conradlovesjoy Месяц назад

If it faced out it would be in a computer case and nearly impossible to replace.

@llamallarry Месяц назад

In some cases it would, and not in general

@HBAVHS Год назад

Thanks!

@cdl0 9 месяцев назад

Amigakit sell a ready-made part, with optional CR2023 cell.

@ljrretropcs Год назад

You are some kind of wizard! Great idea. Although some boards may need a double CR2032 holder as there are some boards where the single cell is not enough to keep the full function.

@jirja3192 Год назад

You can use LIR2032 that has 3.6V

@kokodin5895 Год назад

why not make pcb horisontal and smaller and use cleaner looking vertical battery holder?

@scrap_computing Год назад

Yeah that's another option :)

@Leos-World Год назад

Nice solution. In general, how long das the lipo cell battery last?

@pentiummmx2294 7 дней назад

i got one of those for my 386SX board and sadly it seems to not work, it like is ignoring any battery i try, i did pay attention to the polarity as well.

@scrap_computing 7 дней назад

Hmm perhaps the diode is the wrong way in? Have you tried measuring the voltage at the pins with a multimeter when the PC is off? You should be getting a little over 3V with a new battery.

@cptcrogge Год назад

Would it be possible to use a rechargeable ML2032 without any diode or is the charging current of the NiCd battery incompatible?

@scrap_computing Год назад

I would guess that the ML2032 would require some decent charging circuitry to avoid damaging the battery.

@Megatog615 Год назад

What schottky diode do you recommend for this?

@scrap_computing Год назад

Any schottky diode should do, like for example the 1N5817.

@dazamad Год назад

How has the cr2032 going after 1 month? Is it still holding the settings. Thinking about ordering these pcb but not sure if 3v is enough in standby. Thanks and enjoyed watching

@scrap_computing Год назад

I just checked and it seems to be holding the settings fine after ~2 weeks off power. But yeah, ti may not work reliably on all boards.

@ayan.debnath Год назад

Pls share the Diode no?

@scrap_computing Год назад

Try a schottky, like the 1N5817 or 1N5818, 1N5819 any one of them will do.

@ayan.debnath Год назад

@@scrap_computing Thanks a lot.

@ayan.debnath Год назад

@@scrap_computing I know, but my tests gave some strange results. I tested these in a Breadboard. Using 1N5819, when I give 5V in opposite direction, the leak correct is almost 1.5v! Using 1N4007, when I give 5V in opposite direction, the leak correct is almost 0v! But, 1N4007 makes 3V, drops to 2.6-2.8V.

@scrap_computing Год назад

@@ayan.debnath You should not worry about reverse voltage. The only thing that matters is the voltage after the diode, it should be as high as possible (close to the 3V of the battery), which is why a schottky is usually a better option.

@protonjinx 8 месяцев назад

soldering above a mobo.... one droplet of solder and goodnight mobo...

@scrap_computing 4 месяца назад

Yeah, it would make a nice motherboard repair video :)

@PROSTO4Tabal Год назад

barrel batteries are rechargable, cr2032 are not, how do you explain that ?

@RodBeauvex Год назад

That's what the diode is for. It will keep the board from trying to charge the batter, but allows the battery to still run the RTC SRAM.

@ayan.debnath Год назад

@@RodBeauvex what Diode should I use? model?

@RodBeauvex Год назад

@@ayan.debnath Any cheap diode will work, though try to find something with a low voltage drop. The bigger problem is most boards were designed for whatever battery they came with, and if they were designed for other types, other circuit components me be needed, and those are application specific.