MSX with internal batteries

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By Argon

Paragon (1085)

Argon's picture

30-06-2018, 06:57

Hey guys.

Do any MSX1 computers also have batteries that might need to be removed?

Thanks!.

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By Meits

Scribe (5532)

Meits's picture

30-06-2018, 11:22

I wouldn't count on it. MSX1 doesn't have an RTC.

By Argon

Paragon (1085)

Argon's picture

30-06-2018, 11:43

Cool, thanks, just removed the batteries from 10 of my MSX2 systems.
Luckily only 2 of them had started leaking (Philips NMS-8245 and National FS4500).

By Philip

Champion (371)

Philip's picture

30-06-2018, 12:04

That's very wise. Surprisingly the battery in one of your 8245's was still working as it was in width 80...

By Argon

Paragon (1085)

Argon's picture

30-06-2018, 12:08

Philip wrote:

That's very wise. Surprisingly the battery in one of your 8245's was still working as it was in width 80...

Hehe, yes, I wondered about that too, but I don't remember if I made the picture before or after I removed the battery Wink
And I already put the computers back in storage.

By Philip

Champion (371)

Philip's picture

30-06-2018, 17:45

Well, working or not, it still has quite a high chance to start leaking. So better to remove anyway Smile

By Grauw

Ascended (8451)

Grauw's picture

30-06-2018, 18:01

Last month I removed the one in my NMS8245 as well Smile.

By SkalTura

Master (192)

SkalTura's picture

15-08-2018, 09:54

I added a small connector in my Sony F700P so I could use a standard 3V PLC battery.
Easy to replace if it's empty again, although I don't think that will happen any time soon...

By gdx

Prophet (3035)

gdx's picture

15-08-2018, 10:53

Meits wrote:

MSX1 doesn't have an RTC.

Right.

Grauw wrote:

Last month I removed the one in my NMS8245 as well Smile.

You should try a supercapacity (5.5V, 1F or more) and a resistor in serial.

By sd_snatcher

Prophet (3068)

sd_snatcher's picture

15-08-2018, 14:51

I heard that the ML2032 batteries can be a satisfactory replacement for the NiCAD 3.6V batteries. Note that ML2032 is the rechargeable version of the CR2032.

They won't keep the RTC for longer periods as the original, but hold for long enough for the type of use the MSX see nowadays.

The major advantage is that xx2032 button batteries are solid and don't leak.

By pix retro

Rookie (20)

pix retro's picture

20-08-2018, 18:11

Hiya... I've an nms 8245.... Do I need to replace the battery or can I just leave it out??

Thanks!

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