Highlight Having it, you would be far away from the trouble of lacking power Features Input voltage:12V/24V <100mA Maximum output voltage≤300mA No-load voltage: 4.20V±2% Environmental Conditions: Working temperature:0℃-40℃, relative temperature≤90% Certificate: GB4943 standard The best charing time: A:≤650mAh--about 5 hours B:>650mAh-900mAh--about 8 hours C:>900mAh-1300mAh--about 12 hours.
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