NTLK NiMHs vs. alkalines

From: Gruendel, Frank 3837 PPE-WT (Frank.Gruendel@de.heidelberg.com)
Date: Fri Jul 07 2000 - 05:52:22 CDT

>NIMh's are fairly similar in performance and power to the Alkalines,
>perhaps even better, so the battery gauge should be accurate.

I'm afraid I disagree. NiMH's have, just as NiCad's, an operating voltage
of 1.2 volts. Thus 100% capacity means 4.8 volts or more for NiMH's and 6.0
volts or more for alkalines (the latter having an operating voltage of 1.5
NiMH's shouldn't normally be discharged below 1.0 volts, so 0% capacity
4.0 volts for NiMH's. For alkalines this doesn't matter as you throw them
anyway, so here 0% means the lowest voltage the Newton will safely work
On my 120 and 130 this is about 3.6 volts.

>But i've heard that they also leak about 3% of their
>charge daily, so good high-drain devices like a well used newt,
>but bad for TV remotes...

After an initial charge loss (which is about 15 percent within the first 24
hours) they lose 15...20 percent per month at room temperature.
This is approximately doubled every 10 degrees celsius increase in
that's why it is a good idea to charge them and store them in the fridge if
not used.

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