Quote:
Originally Posted by bokjeid
I've bought another new DR1000S as spare one(I really appreciate the device) but when I connected it to PC with USB cable to charge it, nothing happened - no light turned on. After searching in this forum, it seems that I need a 'wall charger'.
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The DR1000S should charge from a USB port on a PC, but not all USB ports - or USB wall chargers for that matter - fully comply with the USB standard, and some devices are more sensitive to this than other devices. The DR1000S is at least not insensitive to this. In my experience though, PC USB ports have been more reliable than wall chargers.
The problem with USB wall chargers is not the current though. They usually provide a voltage that is off. The problem is that the specification of the device will not tell you this. The specification simply states 5 V.
Quote:
Originally Posted by bokjeid
Then can I use '2000mA' charger without any problem or error? 2000mA one seemed the largest one. Is it charged faster as the number of 'mA' becomes larger?
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You can use a 2000 mA charger without problems. The mA rating only tells you what the maximum current is the charger can provide. If you try to draw more current, the charger will no longer be able to control the voltage accurately, and might overhead. But most chargers have some overload protection to prevent overheating.
A 2000 mA charger might charge faster, but not necessarily. The battery in your DR1000S uses a battery management circuit. This circuit controls with what current the battery is charged. In order to avoid uncontrolled charging (resulting in an overheated battery, or even a silent or even violent breakdown of the battery), the battery management circuit prevents the current from exceeding some maximum. If the charger would not be able to provide enough current, the battery management circuit will also prevent the battery from charging. So the battery management circuit will be able to charge the battery through some range of currents. If your charger can provide the maximum of the range, the battery is charged at maximum rate.
Regards,
Mark