UPG UB121000 (45978) 12 V 100A ERSATZ LITHIUM LiFePO4 AKKU BLUETOOTH
It has Bluetooth capability and is compatible with high drain devices, low drain devices, and solar/wind devices. Ultramax LI100-12DINBLU – DIN BASE 12V 100Ah LiFePO4 Battery 4000 Cycles With Bluetooth Energy Monitor.