Power supply for mobile devices: Page 3 of 10

November 04, 2014 //By Michael Mueller
Power supply for mobile devices
Michael Mueller of congatec considers what to look for when selecting a power supply for mobile devices.
off if the voltage falls below a second, lower threshold. This fail-safe mechanism protects the battery pack from self-destruction. Other internal protective mechanisms prevent the battery from damage due to high currents, overvoltage, short circuits, reverse polarity and overheating. The charge current can be limited depending on the temperature. Ideally, smart power management will prevent critical situations before the battery has to intervene as a last resort.

Always 100%
Batteries age, even if treated with the utmost care. Therefore, they are designed to calibrate themselves from time to time so as to retain a valid capacity reference for internal measurements. This way, the capacity gauge is also calibrated back to 100%.

Rules and regulations as far as the eye can see
EMC, UL, Safety, IEC62133, CE, RCM, EAC, KC, RoHS, REACH . . .

RRC is a German company with international manufacturing facilities and distribution channels around the globe. RRC has proactively used this international experience to have its standard packs certified in six different form factors for all relevant approvals. Each critical issue is tested and certified; the battery packs undergo the most stringent tests, including drop, vibration, impact and bend tests as well as tests for electromagnetic compatibility. As a minimum, each battery pack must pass the UN transport test if it is to be shipped without a dangerous goods declaration. But that is not enough to export to major markets. When it comes to safety, national regulations often differ from international standards. Therefore, RRC battery packs are certified to meet the special UL components standard for the USA and Canada, the PSE standard for Japan and the RCM stand for Australia and New Zealand. The batteries are currently undergoing the certification process for the KC approval necessary for Korea and the EAC approval for the Russian Federation. Needless to say, the battery packs comply with RoHS, REACH, recycling regulations and the electrical safety standard IEC62133. The CE

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