Battery Chargers Error Codes

17 error codes across 2 brands. Find your code, what it means, and how to fix it.

Everstart

15 codes
Alternator Fault Indicator

Flashing fault icon and alternator icon on LCD screen indicate an alternator issue detected during alternator check.

Clamp icon flashing

LCD screen displays flashing clamp icon indicating the charging clamps are not properly connected or detected.

Continuous beep

Reverse polarity alarm — an audible alarm indicating the battery clamps are connected with incorrect polarity.

E01

Reverse polarity detected — the positive and negative clamps have been connected incorrectly to the battery terminals.

E02

Overheating — the charger's internal temperature has exceeded safe operating limits.

E03

Battery voltage too low — the battery voltage is below the minimum threshold for safe charging.

E04

Battery voltage too high — the battery voltage exceeds the maximum safe charging threshold.

E1

Overcharge protection activated — the charger has detected an overcharge condition and has automatically stopped charging to protect the battery.

E2

Overvoltage detected — the battery voltage has exceeded the safe operating range.

E3

Undervoltage detected — the battery voltage is too low for normal charging operation.

E4

Reverse polarity detected — the battery clamps have been connected with incorrect polarity.

Empty battery icon

LCD screen displays empty battery icon indicating the battery has insufficient charge or is severely discharged.

Fault Icon Flashing During Alternator Check

The alternator is out of the typical voltage range and is not functioning correctly.

Overheat Alarm Icon

The charger is overheating and requires a cooldown period before resuming operation.

Reverse Polarity Indicator

Audible alarm and flashing reverse polarity icon on LCD screen indicating incorrect clamp connections.

Cen-Tech

2 codes