1-100PCS 1S 4.5A 3.7V 3MOS 18650 Li-ion Battery Protection Board 3.7V 4.5A DIY
ab 1,19 €
Batteries are connected in parallel and then in series, welded correctly (18650 battery nickel spot welding, other batteries welded), not bolted, IC protection board is easy to burn out. Charging current: 4.5A.
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