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G0FTD > INFO 25.04.03 01:29l 40 Lines 1488 Bytes #999 (0) @ WW
BID : 491173G0FTD
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Subj: Life of various battery types.
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Sent: 030424/1744Z @:GB7SXE.#38.GBR.EU #:17478 [Hastings] FBB7.00i $:491173G0FT
From: G0FTD@GB7SXE.#38.GBR.EU
To : INFO@WW
The following info may be of interest.
BATTERY TYPE MAX mAH MAX CHARGING CYCLES RATE OF SELF DISCHARGE
Alkaline 2850 N/A 5 year shelf life
Lithium N/A 10 year shelf life
R.A.M. 2000 10-25 5 year shelf life
Lithium metal 250 1-2% per month
LIon 500-800 1-10% per month
NiMH 1200 300-500 25% per month
Nicad (Hi cap) 850 500 25% per month
R.A.M = Reusable alkaline-manganese
R.A.M batteries have high internal resistance, poor pulse performance
and no memory effect.
Alkaline batteries have high internal resistance and poor pulse performance.
Lithium batteries have reasonable pulse performance and a fairly flat
discharge curve.
Lithium metal batteries have a flat discharge curve and no memory effect.
Lithium-ion batteries have no memory effect, can be damaged by over
charging or over discharging and have a sloped discharge curve.
NiMH batteries have little or no memory effect, can be damaged by
high charging currents or overcharging and their lifetime can be
shortened by pulse discharges near battery rating.
Best slow charged at 10% of capacity.
Nicads have a memory effect, fairly resistant to overcharging and have
best pulse performance.
- Andy -
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