Rod Speed ha escrito:
Not necessarily. They can move the charging circuit to the cell in itself.
Not practical with AA and AAA batterys being discussed.
In spades with an ipod battery.
Why? Because you say it? Oh please...
Of course that will steal space from the chemical part of
the cell with the resultant capacity loss, but it can be done.
But isnt practical and it cant be done with an ipod battery anyway.
Thus the charger used to recharge the battery becames
inmaterial because any proper voltage source will suffice.
The problem aint the voltage source.
You say that because probably you donīt have a clue about how a
battery charger works.
In fact, since lithium cells produce 3V, and a AA battery
shouldnīt produce more than 1.5V, I suspect that these
lithium cells have some form of voltage regulating circuit inside.
No they dont. They are in fact nothing like RECHARGABLE lithium technology.
A lithium cell WILL produce 3V regardless of itīs type. A rechargeable
lithium battery or a non rechargeable one will have the same voltage
output. Thatīs what the chemistry produces, and you canīt reduce that
voltage chemically, so they must have some built in electronic method
to reduce the voltage to the standard 1.5 V a AA cell should produce.
If that is true, then itīs possible that in several
years that circuit will be designed to allow a
safe recharging of a lithium AA or AAA battery.
Its obvious technically possible right now given that cellphones
and ipods etc can obviously charge them fine now, and with
cellphones particularly can handle all of NiMH, NiCad and Lion etc.
The problem is that if they are in AA or AAA format, there
is nothing to stop an individual putting them in an inappropriate
charger and ending up with a massive legal liablity problem.
As I stated previously, if you move the charging circuit to the cell
itself, the problem of the charger dissapears completely.
Not with a standard battery format they cant, because that
would inevitably see some put them on inappropriate chargers
that would produce spectacular results when they did that.
The technollogy exists, and in fact itīs in use actually.
No it isnt with STANDARD BATTERY FORMATS.
Take this cordless phone, for instance,
http://gigaset.siemens.com/shc/0,193... html#content
Itīs designed to work with standard AAA rechargeable batteries.
So is mine. Pity it doesnt accept Lithium rechargable AAA batterys.
I donīt care it it cannot take Lithium or Plutonium batteries. The
point here is that the phone is designed to take a standard
rechargeable battery which will be available forever, and not a
proprietary battery which surely will be non available when the need to
replace it arises.
Also I own a Siemens C4000 cordless phone and it works with
standard AA rechargeable batteries. It can take NiCd or NiMh batteries.
So does my Panasonic, and I bought it for that reason.
It will not however accept lithium rechargable batterys.
Both of my current cellphones, Nokias, will accept all of NiMH,
NiCad and Lion batterys, but they arent AA or AAA format
because there is too much risk with that approach of someone
trying to charge the Lion batterys with a separate charger that
doesnt know how to charge Lion batterys.
If you move the charging circuit to the battery pack (like laptops
battery packs do), you donīt have to worry about that.
So, *if* the manufacturer wants to develop a product
using standard rechageable batteries, *it can do it*.
Nope, because there is no way to stop someone putting
it in a charger that knows nothing about Lion charging.
I said "standard rechargeable batteries", not LiOn. What part of that
didnīt you understood?