Using socketed rech. AA's to replace the DC's internal batt

[vxbinaca]

Anyone try such a thing? I know the DC applies 3v from power on constantly to the battery.

I figure if I can pick up cheap AA's to go with the really cheap sockets I got off Ebay. But wouldn't it be an issue since the AA's would only put out 2.6v instead of 3? Would the batteries explode if they got a 3v charge?

It's been years since I took EE classes.

[slowslow325]

Anyone try such a thing? I know the DC applies 3v from power on constantly to the battery.

I figure if I can pick up cheap AA's to go with the really cheap sockets I got off Ebay. But wouldn't it be an issue since the AA's would only put out 2.6v instead of 3? Would the batteries explode if they got a 3v charge?

It's been years since I took EE classes.

Are you talking about Double A batteries, to replace the battery inside the Dreamcast for the clock?

If so, AA's only exert 1.5V, not 2.6. Also, batteries don't receive charge, they give it. So, no the battery won't explode if it receives a 3V charge. Just purchase a two AA battery holder, solder the wires leading out of it to the contacts for the old battery and put it back together.

[vxbinaca]

When you run them in series they do about 3v

Edit:

The Dreamcast does apply 3v constantly to the battery though. Thats why they're ML2032's instead of CR2032's.

[CRTGAMER]

Regular Akalines AA are 1.5, so two would be 3 volts.

Rechargeables tend to have a 1.2 to 1.3 volt rating hence vxbinaca's total of 2.6 volts. Basically the same battery as a replacement for akaline batteries, so either two AA or AAA or C or D rechargeables if you can cram them in should work in place of the Dreamcast "watch" battery. A trickle charge tends to be a little higher voltage then the voltage of the battery its feeding, thats how it can trickle in.

[Hobie-wan]

The question might be more if the recharging circuit can handle pushing through that much battery compared to a coin cell.

[CRTGAMER]

The question might be more if the recharging circuit can handle pushing through that much battery compared to a coin cell.

A good point considering the larger capacity. Since a constant trickle charge when DC is on probably will be fine.
Play it safe by topping batterries first on a regular charger before popping in the Dreamcast.

I think it would just take a lot longer to initially charge but a good excuse for marathon Soul Calibur night.