Hi, this is a 3S 40Amp BMS that I've used for my 12V power bank

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3S 40A Li-ion Battery Charger Protection Board PCB with BMS

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Cheap 3S 40A BMS 18650 lithium battery protection Board with Enhance/balanced Version for drill current

Model: 3S 12V/40A with port. Applicable battery type: 3.7V ternary battery lithium cobalt acid lithium manganate battery. Overcurrent protection

BMS 3S 12V 40A For 18650 Lithium Battery Charging Protection Board with Balance

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BMS 3S 40A 11.1V 12V 18650 Lithium Battery Protection Board Without Balance 3S BMS 3.7V Polymer Lithium Battery Protection Board - AliExpress

Hi, this is a 3S 40Amp BMS that I've used for my 12V power bank that utilizes car 12v chargers to charge my stuff. Basically a 3s9p configuration for for 18650 2500mah

Model: 3S 12V/40A with port. Applicable battery type: 3.7V ternary battery lithium cobalt acid lithium manganate battery. Overcurrent protection

BMS 3S 12V 40A For 18650 Lithium Battery Charging Protection Board with Balance