Only add distilled water after the charge is complete, never before.
Without the original manual, the LED indicators on the Exide 2100 RP can look like a cryptic Christmas tree. Here is the standard legend. exide 2100 rp charger manual
Ensure the battery voltage and Amp-hour (Ah) rating match the charger specifications. Using an incompatible charger can lead to battery overheating or permanent damage. 2. Connecting the Battery Only add distilled water after the charge is