Dear reader,
I ordered a week ago a bms. It was in stock.
https://www.lithiumbatterypcb.com/product/4s-or-3s-12v-li-ion-or-lifepo4-battery-smart-bms-with-bluetooth-function-uart-and-rs485-communication-with-60a-to-120a-constant-current/
I selected the 4S LiFePO4 120 with uart and rs 485. It...