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Açık 20W Manuel El Jeneratörü DIY USB Elektrikli Dinamo Güç Acil Durum Telefon Şarj Cihazı
US$51.99 US$62.99

Q: how many times do I need to use the crank per minute to keep voltage stable? (for example: push crank 1 time per minute is enough to keep voltage 5 volt.)

Soran feetjai Açık 2017-11-20 16:51:56

yespinky around 60, it didn't seem too fast, the cranking was easy, and both USB devices I tested did not waiver

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