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Question on 6v medical batteries

Cheech

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I bought 5 of these 6v 28A Duracell (4LR44) medical batteries for $1.20 a piece at Biglots and was wondering if they are safe to use on a ddl driver. I was going to use one of these and a cr123 to get 9v. My concern was the 28A being to high for the driver. The lm317 data sheet says it is capable of supplying in excess of 1.5A over a 1.2V to 37V output range. But what about the input amps
I’ve tried the battery alone with a led in place of the ld and it works. I’m just curious if anyone has had any experience with these batteries as I could not find info through the search
theshorelinemarket_2100_121145706

They are 70% the size of a cr123
 





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I honestly have no clue, try talking to a user here names electrofreak. He may know :) Well Im sure a lot of the users here know, not me though :/
 

Cheech

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In theory I could start a car with 4 of these, 2 in series and paralleled
 
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I donk think its a good idea to mix battery typ's. Most of all battery's of different volt's. id say use two if them and observe your driver for over heating.

I get 3.3A short circuit with one 16340 3.6V times three for my blu-ray ld on a rkcstr Micro-Drive wich is a ddl driver i think? but thats 9.9amp's

I think the ddl driver use's up just extra volts as heat.
 

HIMNL9

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No, sorry to say this, but the last time that i've dismantled one of these 6V batteries for curiosity, it ended being 4 LR44 (AG13, in some countries) button batteries in a plastic tube (i don't remember the brand, so your ones can be built different ..... anyway, the current that you can get from them is almost the same, very low)
 

Cheech

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I opened one up and that was the case 4 LR44's. But what's up with the 28A, it seems like that would run a 120ma diode for quite a long time. Although there is no Ah rating.
 
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28A does not refer to the amperage, it's simply the battery type.

Robert

^^This.

On original question, yes, your configuration would work, but only for a very short time, since button cells (of which there are 4 inside) have a very low charge in them, only a few hundred mAh, and before long voltage drop would mean they become useless. Anything below AAA size is useless to most of us, unless you need keychain size and don't mind a short use time before switching batteries.
 

Cheech

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Thanks for clearing this up. I'll report back if they can start a car.
 
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Thanks for clearing this up. I'll report back if they can start a car.

I hope that was a joke... ;)

If it wasn't, there's absolutely no way that those would be able to start a car - there's simply not enough energy there to turn over an engine, a car starter eats up to 50kW, those batteries could never put out any way near that much.
 

Cheech

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joking
I'm a electrician by trade. lots of years of boring ohm's law
But I'm just now getting into semiconductors
 




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