Peace, mercy, and blessings of God be upon you. I have a device for merging two lithium batteries. It merges any battery with another with great ease. It is connected to the device and directly to the relay. It is suitable for any scooter or any project. It withstands up to 100v and 10 amps charging and 120Ah capacity. I bought it for 270 riyals, and I will not disagree with a serious buyer. Contact via WhatsApp.