Li-ion Battery Charger Boost Module 3.7V Step Up 9V 5V 2A Adjustable Board
3,52 €
The cut-off boost 2V,, whether add a protection board or not depends on the situation. Before debugging, the default output is about 9V. Output Reference Maximum Current: 5V 1.4A, 9V 0.8A, 12V 0.6A.
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