- Joined
- Jun 1, 2001
- Messages
- 7,897
- Reaction score
- 135
- Points
- 63
- Age
- 62
- Location
- East-Central Pennsylvania
- Vehicle Year
- 1987... sorta
- Make / Model
- Ford
- Engine Size
- '93 4.0
- Transmission
- Manual
the old NiCd batteries HAD to be fully discharged and recharged (NEVER partially discharged) to avoid developing "NiCad Memory effect"
The Newer Nickel Metal Hydride batteries are resistant to Memory effect, but suffered from slow self discharge, didn't like bieng overcharged and have a shorter cycle life.
Typically NiCd batteries are (when new) good for ~2000 cycles.
Nickel Medal Hydride (NiMH) are good for only around 1200, however partial cycled don't count.
Lithium Ion batteries are another animal entirely leaving rhem plugged in doesn't really hurt them,
but there's another issue, even when used perfectle Li-Ion batteries have a limited service life,
not only based on cycles but on TIME.
Generally speaking a Lithium Ion battery's capacity will fade noticeably after 3years of
service. (a 3year old Li-Ion cell phone battery isn't even good as a paperweight)
Partial cycles are "good" for the battery's lifespan, FULL discharge cycles are not.
And while people focus on the SPEED of newer computers the speed isn't the big
improvement... power consumption is.
My old Gateway laptop (2.8GHz P4) is a 95watt powerhog
while my Newer Dell (a 2.0GHz Core2 duo) with 2/3 the battery capacity
(4800mA/h for the Dell Vs 6800mA/h for the gateway) has nearly twice the
run time on battery... and I'm waiting for FedEx to deliver my NEW 7500mA/h battery
(according to tracking it's on the truck for delivery....TODAY!)
ARRRGGGGHHHH!!!!
while typing the FedEx truck came.... the idiots shipped me the wrong battery
I ordered a GP952 but received an FK890, both dell 85Wh batteries, but this one won't fit!
It's for a Dell 1520, not a Dell 1525.
fortunatly my Neighbor has a Dell 1520, so even if I can't exchange it...
But while I'm thinking on this issue, many newer laptops (my year old Dell included)
will run on external power indefinatly without harm to the battery...
Infact I can REMOVE the battery from my laptop while on external power
the battery is "on standby", so I can watch the charge state while on AC (or external DC)
power and swap them without needing to shut down and restart.
I couldn't do that with my old Gateway without restarting and even then it would come
up in "safe mode" (how aggrevating!)
AD
The Newer Nickel Metal Hydride batteries are resistant to Memory effect, but suffered from slow self discharge, didn't like bieng overcharged and have a shorter cycle life.
Typically NiCd batteries are (when new) good for ~2000 cycles.
Nickel Medal Hydride (NiMH) are good for only around 1200, however partial cycled don't count.
Lithium Ion batteries are another animal entirely leaving rhem plugged in doesn't really hurt them,
but there's another issue, even when used perfectle Li-Ion batteries have a limited service life,
not only based on cycles but on TIME.
Generally speaking a Lithium Ion battery's capacity will fade noticeably after 3years of
service. (a 3year old Li-Ion cell phone battery isn't even good as a paperweight)
Partial cycles are "good" for the battery's lifespan, FULL discharge cycles are not.
And while people focus on the SPEED of newer computers the speed isn't the big
improvement... power consumption is.
My old Gateway laptop (2.8GHz P4) is a 95watt powerhog
while my Newer Dell (a 2.0GHz Core2 duo) with 2/3 the battery capacity
(4800mA/h for the Dell Vs 6800mA/h for the gateway) has nearly twice the
run time on battery... and I'm waiting for FedEx to deliver my NEW 7500mA/h battery
(according to tracking it's on the truck for delivery....TODAY!)
ARRRGGGGHHHH!!!!
while typing the FedEx truck came.... the idiots shipped me the wrong battery
I ordered a GP952 but received an FK890, both dell 85Wh batteries, but this one won't fit!
It's for a Dell 1520, not a Dell 1525.
fortunatly my Neighbor has a Dell 1520, so even if I can't exchange it...
But while I'm thinking on this issue, many newer laptops (my year old Dell included)
will run on external power indefinatly without harm to the battery...
Infact I can REMOVE the battery from my laptop while on external power
the battery is "on standby", so I can watch the charge state while on AC (or external DC)
power and swap them without needing to shut down and restart.
I couldn't do that with my old Gateway without restarting and even then it would come
up in "safe mode" (how aggrevating!)
AD
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