L-Ion Charing Question -:Slightly Urgent:-

[iso9001]

Hi,

I've got a FlashTrax (Smartdisk.com, its basically a laptop hdd with a screen). And I lost my AC Adapter (which is my means of charging it)

Now, it uses a L-ion 2300mAh battery, and it can charge via a car adapter, its AC adapter, or even the USB port (they dont advertise the USB cause its SLOW)

Now the problem, they want $40 for an AC adapter! They say its "5V and 3amp, center pin positive". Can I use a 5V - 2200mAh Ac Adapter to charge this thing?

Is it going to fully charge and just take longer then their 3amp adapter or will is just never fully charge ? I can get a 2200mAh multivoltage charger at walmart for like $12 and then also run my camera and other stuff off of it.

Anyone know if this will work ?

 

[pike]

It might work perfectly depending on the internal resistance of the battery. Noting ohms law, if the battery consumes more current than 2.2A then you will start to see a voltage drop in the charger. this way the battery will never charge to the maximum.

but again this all depends on the internal resistance of the battery.

 

[Sebi]

If You use this AC adapter only for charging ( no using the device until charge time), 2200mA quite enough for full charging. LI-Ion batteryes most of case have in-built electronic management for charge-discharge management.