ISO IMR18650 with tabs

[VegasF6]

Need to replace the cell in my single cell Ryobi screwdriver, this one or very similar.
https://www.ryobitools.com/power-tools/products/details/375

The current battery is Moli FSPE IMR-18650E
http://www.molicel.com/ca/pdf/IMR18650E.pdf

I will have to double check the factory charger, but I think it only charges at about 1C, 2C at best. And it's pretty low torque driver as well so despite the max discharge rating of 20A on this cell, I would bet I could get away with half that in a pinch.

Anyhow, please recommend a comparable or even better cell, and bonus points for including the retailer who has it.
Thanks!

 

[ChrisGarrett]

http://www.batteryspace.com/Ultra-High-Energy-Density-Rechargeable-Single-Cells.aspx

The higher capacity of those high drain cells in the link probably shouldn't wreak havoc on the charging algorithm in the charger.

Chris

 

[VegasF6]

Thank you. Which are you suggesting, the Sony cells? They seem best on the page, but these aren't the Konion battery correct? And they aren't a manganese cathode, just a traditional LiCo, correct?

 

[ChrisGarrett]

Thank you. Which are you suggesting, the Sony cells? They seem best on the page, but these aren't the Konion battery correct? And they aren't a manganese cathode, just a traditional LiCo, correct?

Anything that can approach 10A continuous should be fine, as I doubt that drill draws 20A.
Li-Mn (IMR) and Li-Co (ICR) use the same charging algorithm, so that's not a problem. Both are 3.6v/3.7 (4.20v off the charger) and not 3.8v (4.35v) cells.

The only issue that I see is that they state that they don't sell single cells, so you'll have to contact them and see.

I don't know how much you paid for that thing, but even buying two cells might be worth.

I have an 18v Skil set of tools and the two packs eventually wore out. I spent $104 getting them professionally rebuilt and so far, so good.

Hopefully, I'll get a good 5-6 years out of them.

Chris

 

[VegasF6]

Ok thank you, I will try. Some cells it says will not sell single, but not the Sony i don't believe. My biggest concern would be if there is a trickle charge from the OEM charger. If so, a LiMn2O4 cell would be preferable. But I do agree with you about max current draw.

 

[magellan]

This outfit specializes in IMRs. I just ordered some AWT 18500 18 amp ones. You might give them a try as they do sell individual cells.

http://www.imrbatteries.com/18650-batteries/

Illumination Supply and Mountain Electronics are also well regarded here.

http://www.illumn.com/batteries-chargers-and-powerpax-carriers/batteries.html?___store=default

http://www.mtnelectronics.com/index.php?route=product/category&path=59

 

[VegasF6]

But do they weld tabs?

 

[magellan]

Ahh. Don't know if they do that. I would call and find out since they do offer both flat and button top cells.