--- On Sat, 9/3/11, robert46o <[email protected]> wrote:

> I contacted Tascam Sales Support on
> the issue of charging the lithium Battery.
> 
> This is the reply I received.
> 
>  " The DR-100 comes with a USB cable that is used to
> connect to a computer which will charge the battery. If you
> want a power supply to power the unit and charge the battery
> you will want to get the PS-P520, which can be viewed and
> purchased from: http://tascam.com/store/ps-p520/  "
> 
> 
> Charging the battery using a USB cable to a computer is new
> to me.
> But the additional power supply is priced at 30 dollars.

A USB port provides 5 volts DC at *up to* 500 milliamps current. Some devices 
use a USB cable with a parallel connected second plug (just the power wires) to 
get extra current.

If the device needs more than 5 volts then it has to use a separate power 
supply. It might be possible to connect the second plug in series to get 10 
volts but I doubt that would be a good idea, might cause damage to the 
computer's USB power circuitry.


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