Ca you use this 40amp charger on a 100AH LiFePO4 battery with no damage issues ? They recommend a 20AH Charger for a 100AH LiFePO4 battery .I am wondering if the BMS on battery will protect the battery if using a higher amperage charger ? Are you using this on a 100AH or 200 AH battery . 2.5 hours to charge a 100AH or 5 hours for a 200Ah LiFePO4 battery .The 20AH charger takes 5 hours for 100AH LiFePO4 battery.