QUOTE(gkl83 @ Jun 15 2011, 08:40 AM)
lower amp is fine unless your handphone able to adopt different of load and adjust the charging speed without burden the USB charger...
if the handphone are hunger for power and must use certain amp to operate the charging functionality... if may overload the USB charger, overheat and burnt... worst come to worst, the insufficient load may damage the handphone, but for current technology the handphone should able to adopt at least computer's USB port's power load...
example: i used a power adapter with 1amp only for a equipment, end up the power adapter overheat and burnt after 15 minutes usage... as i checked with adjustable PSU with same voltage, the equipment required 3-4amp at least... means the equipment sucking more power from power adapter and more burden...
Hmm, last time when i tried to charge a N97 mini through my emergency charger with a very low output amperage and it did not charge. Also, if the equipment is switch off during charging, the risk you mentioned still exist?
QUOTE(shadow111 @ Jun 15 2011, 09:14 AM)
oh.. doesn't they hv some internal breaker or somethin like that?
once it detected the voltage too high, it will auto cut of the power..
Most branded smartphones have it, but not 100% of the phone have it.
QUOTE(mengsuan @ Jun 15 2011, 01:01 PM)
Higher amperage is okay if the voltage is regulated. 5A also no problem. Take current as the adaptor's capability. Voltage is the force.
5A also no problem? I really hope to see there are emergency chargers with that kind of output seriously. Most of the emergency charger takes too long to charge the phone battery during outing......
Jun 14 2011, 02:11 AM
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