4AAA battery pack conversion to 3AAA

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02-28-2018, 01:42 PM
Ronpir

4AAA battery pack conversion to 3AAA

Hi guys,

I'm new to the forum. I was pretty happy to see that there is a community out there who has gone down the same rabbit hole as myself.

Anyway, quick question. I want to use the 4 AAA battery and speaker combo sold here. I only want 4.5 volts forward. Whats the best way to fill in that last battery spot. I thought it would be as easy as soldering a jumper from the empty positive to the empty negative but I'm not getting any current readings in the multimeter. I can buy a dummy battery I suppose, but that seems like a waste. Google has failed me on finding a solution.

I'd appreciate any help.

Thanks,
Ron
02-28-2018, 05:07 PM
Forgetful Jedi Knight

Welcome to the Forums. You could try to find a dummy cell somewhere, if th store doesn’t carry them.
02-28-2018, 07:55 PM
Silver Serpent

A jumper wire should do the trick. If it isn't, you might want to doublecheck your solder connections.
02-28-2018, 08:19 PM
Ronpir

I have a 3 cell AAA battery pack I use as a test power supply. Everything is working when I use that, so the solder connections are good everywhere else. The problem is in the battery holder somewhere. I resoldered the jumper wire 3x with new wire each time. Same result.

Does it matter what cell i make the jump at?
02-28-2018, 10:02 PM
Ronpir

Ok. The problem was with the custom saber shop 4AAA battery and speaker holder. There are 2 metal screws that fasten the speaker holder to the battery holder. They were causing a short. i started at the jst connectors and worked backwards. When I removed the screws from the speaker holder the voltage kicked on. Anyway, its fixed now and the laws of physics remain intact. I'll use some epoxy instead of the screws. I'll get some pics of my work up shortly.
03-01-2018, 08:08 AM
PCModulus

Quote:

Originally Posted by Ronpir

Ok. The problem was with the custom saber shop 4AAA battery and speaker holder. There are 2 metal screws that fasten the speaker holder to the battery holder. They were causing a short. i started at the jst connectors and worked backwards. When I removed the screws from the speaker holder the voltage kicked on. Anyway, its fixed now and the laws of physics remain intact. I'll use some epoxy instead of the screws. I'll get some pics of my work up shortly.

Shorten the screws?
03-04-2018, 06:36 PM
Ronpir

2 Attachment(s)

https://flic.kr/p/23vBUZD Attachment 16382

Altering the screws was a good idea, but I used epoxy because the saber is not intended to be a dueling piece. I think it looks pretty good.