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600W DC-DC 12-60V to 12-80V 15A Boost Converter Step-Up Power Supply Module $4.18
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250W DC-DC 10-50V CC CV Boost Converter Module $1.44

18650 Lithium Battery 5V 2A USB Power Bank Module

$0.70

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SKU: ARD2137 Categories: ,
Description

Output: DC5V/2A max
Input DC5V/1A micro USB
Battery voltage: 3.7-4.2 lithium battery
4 LEDs power level indicator

Note: the battery must be in parallel rather than in series. Test voltage before installation. One bad battery will affect the whole group battery. Recognize the positive and negative. If you put them in the wrong position, mainboard IC will definitely be destroyed. To avoid damaging the motherboard, exposed part of the wiring must be wraped well

18650 3.7V Lithium Battery Charge Discharge 5V 2A Single USB Output Step-up Boost Converter Module for DIY Power Bank 864-KC

B- Negative B+Positive
Size: 71x16mm

Additional information
Weight 0.01 kg
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