... stage 3)V42±0.3V DC 9Floating Voltage(stage4)V42±0.3V DC10Cut-off Current(stage 3→4)A0A11Max. ... Battery weak,Recovery, 3LED:Model selected light14Output Protect—Over Current Protection,Over Voltage Protection, Short-Circuit Protection, Reverse polarity ... Reverse Protection, Short Circuit Protection, Over Temperature Protection,Over Current Protection, Over Voltage Protection, Free Spark.7.Wall ...