18650 batteries, phone batteries, slim screen batteries, MP3 batteries, etc. 3.7v-4.2V polymer lithium battery.
5v 2a powerbank cahrging circuit features:
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5V 2A Powerbank Charge Circuit With Dual USB Outputs
18650 batteries, phone batteries, slim screen batteries, MP3 batteries, etc. 3.7v-4.2V polymer lithium battery.
18650 batteries, phone batteries, slim screen batteries, MP3 batteries, etc. 3.7v-4.2V polymer lithium battery.
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