NiMH & NiCad batteries

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I stopped using Ni-MH cells about a year ago because of the rapid discharge when not in use.
I switched to the Sanyo eneloop cells for all of my digital cameras and have had very good results.
 
So how do you determine the condition of a rechargeable cell. If I have a set (every device I have requires more than one cell) that are clearly not delivering like they used to, how do I find the slacker?
 
Fully charge a cell then discharge it into a load and time it until the voltage has dropped a certain amount.
Fully charge a cell and let it sit for one month then time a discharge.
 
Tipsy said:
So how do you determine the condition of a rechargeable cell. If I have a set (every device I have requires more than one cell) that are clearly not delivering like they used to, how do I find the slacker?
Click to expand...

I use a LaCrosse BC-900 charger.
It has several modes, one of which is a test mode.
In this mode the cells are charged and then discharged to determine capacities.
Finally the cells are charged again and the capacity in (mAh) of (Ah) is estimated and shown on the LCD display after the charging ends.

There are probably other methods, but that is what I use.
 
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I must be such a cheapskate, I didn't know rechargeables could hold a charge as long as a month. I use NiCd's and NiMH's.
What's required to make a suitable test load (amp/watts) for a single cell, (all my devices require multiple cells).
 
Tipsy said:
I must be such a cheapskate, I didn't know rechargeables could hold a charge as long as a month. I use NiCd's and NiMH's.
What's required to make a suitable test load (amp/watts) for a single cell, (all my devices require multiple cells).
Click to expand...

Normal NiMH's hold a charge for about 3 weeks.
I stopped using them and switched to Sanyo Eneloop cells.
After a year they still hold about 85% of their charge
 
Energizer, Sony and many other ni-MH battery cells also hold a charge for 1 year now. Maybe they are all made by Sanyo.
 
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