Rod Speed ha escrito:
Thatīs why the manufacturer puts the charging circuit *inside*
the cellphone or the laptop, to avoid charging problems.
Yes, and why you dont see rechargeable lithium AA and AAA
batterys, because some fool will inevitably put them in an inappropriate
charger and they will go bang very spectacularly indeed.
Not necessarily. They can move the charging circuit to the cell in
itself. Of course that will steal space from the chemical part of the
cell with the resultant capacity loss, but it can be done. Thus the
charger used to recharge the battery becames inmaterial because any
proper voltage source will suffice. 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. 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.
Also, the IPOD battery is a lithium rechargeable one, so a
lithium battery charging circuit can be made as small as needed.
Yes, but we were discussing why the battery
cant be a STANDARD AA OR AAA FORMAT.
Put simply: if the manufacturer *wants* to design a product with batteries
that can be replaced or recharged the manufacturer *can* do it.
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. Also I
own a Siemens C4000 cordless phone and it works with standard AA
rechargeable batteries. It can take NiCd or NiMh batteries. So, *if*
the manufacturer wants to develop a product using standard rechageable
batteries, *it can do it*.
Even there are different chemistries available, so if an applicattion works
best with a NiMh battery, or a NiCad one, that battery can be used.
Pity about the problem with putting a lithium battery in a charger
thats designed to charge NiMh and NiCad standard format betterys.