Rayovac 2000 mah NiMH: high current?

[mdarby]

Sorry for the several posts on batteries for Mag85, I am trying to get my first mod up and running.

Anyway, my local home supply store (OSH) carries 2000 mah Rayovac rechargeables. The package says that with a certain Rayovac fast charger, the batteries can charge in 15 minutes. Putting aside whether that is good for the batteries, it seems that the batteries are charging at a rate of 8A.

Does this imply that the batteries have low internal resistance and would be suitable for a Mag85 mod, for example? I am having trouble finding a local supply of Energizer/Sanyo 2100 mah batteries as some have recommended. A couple places I've checked no longer stock them, but rather sell 2300 and 2500.

It would be great if these Rayovacs were suitable for high-end flashlights.

Thanks.

 

[mdarby]

After reading a dozen related posts, it seems that at least several people are very happy with these cells in high current bulbs. I'll give them a try then.

If anybody has a different opinion, please let me know.

Thanks.

 

[larryk]

If your referring to the I-C3 batteries they perform just as well in my Mag 85 as the CBP 1650 cells. The cost is much higher on the Rayovac's unless you find them on sale. Larry.

 

[jamaica]

[ QUOTE ]
mdarby said:
The package says that with a certain Rayovac fast charger, the batteries can charge in 15 minutes. Putting aside whether that is good for the batteries, it seems that the batteries are charging at a rate of 8A.

Does this imply that the batteries have low internal resistance

[/ QUOTE ]

Yes. These cells have low internal impedance, and an internal gas-pressure-operated valve that briefly disconnects their terminals when they've received a full charge.

Gas production signals the cell is full -- charging past this point just makes more heat, but stores no energy. After charging the gas is quickly absorbed, the pressure switch closes, and the cell's ready for action.

The regimen seems fairly safe for the cells too, as this method terminates charging better (sooner) than temperature or voltage methods. RayOVac claims 1,000 cycles.

Jamaica