Hi i am working on a EV motorcycle conversion and have acquired a Zivan NG1 charger, It has a adjustable switch that is able to adjust to Ah of battery i will be using, I am wandering what battery chemistry this charger is programmed for. On the sticker is has a code for TR7GR but can not find any information of what this code refers to regarding battery chemistry. Is there any one that can assist in helping me identify chemistry type for this charger? I have attached images of the charger as well. Much appreciated. 
