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3.7v 1800mah 18650 Lithium Battery With Protective Board Loudspeaker, Old Man, And Other Digital Products Rechargeable Li-ion Ce - Digital Batteries - AliExpress
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IR281 Battery – PerfectPrime
Don't understand how to charge this battery. I know the configuration is a 2s2p battery but the connector has 4 pins but only 2 wires are connected to it. Do I need
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