High V Battery, 1 Ohm R Test Load

Spyrius · Mar 16, 2013

I have two questions:

How accurate is a test load composed of just a one ohm resistor?
I calculate the current by measuring the voltage across it.

Is there a battery the size of the 22600 battery that provides at least 5.5V?
I need something that will fit in an MXDL host and will power a 1.65 amp X-Drive V6.

-Thanks

ryansoh3 · Mar 16, 2013

Spyrius said:
How accurate is a test load composed of just a one ohm resistor?
I calculate the current by measuring the voltage across it.

Depends on the specs of the resistor. Check out the tolerances listed.

Most are within +/- 10%, loosely speaking.

Here's an example: 1.0 ohm 10W 10% Wirewound Resistor (2-Pack) : Resistors | RadioShack.com

Spyrius said:
Is there a battery the size of the 22600 battery that provides at least 5.5V?
I need something that will fit in an MXDL host and will power a 1.65 amp X-Drive V6.

-Thanks

You're looking at 2x li-ion cells for a buck driver (x-drive) setup.

Finding batteries half the size of 22600/22650 will be tricky. The closest you could get would be 16340 or 18350.

I suggest you an x-boost or a similar boost driver.

Good luck!

Cyparagon · Mar 16, 2013

lawl @ 5.5V being high voltage

Spyrius · Mar 16, 2013

Cyparagon said:
lawl @ 5.5V being high voltage

It's "high" compared to most of the rechargeable batteries we commonly use
with lasers.

I tried 2x 16340s, they provide the right voltage, but don't fit in the host.

Bionic-Badger · Mar 17, 2013

Maybe 2x 15270s (CR2 size)? The battery size of these is indicated by the number (DxL, e.g. 22600 = 22mm x 60mm). Don't those MXDLs take 3x 10440s as well?

Spyrius · Mar 17, 2013

So 3x 10440s in series might work?
Is there a special holder for that?

Mohrenberg · Mar 26, 2013

Yes, a 3xAAA holder.

High V Battery, 1 Ohm R Test Load

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