Optimum battery block passed waterproof testing last week.
1. Settled 4pcs of battery block in the sink and then filled water fully.
2. The water cover whole battery block. (approx deepness for 70cm)
3. We doing charging and discharging testing base on this condition. We read the charging current was 48.2AH on the implement.
4. The monitor display all parameter of battery block is working.