This charger looks intimidating with its buttons and blinking lights, but it follows a simple logic.
Step 1: The Hookup (Crucial) Always connect the clamps to the battery before plugging the charger into the wall.
Step 2: Plug it In The digital display will light up. If you hooked it up backwards, the unit will beep at you (thankfully, it’s smart enough not to spark). everstart 6811a smart charger manual
Step 3: Select Your Mode Press the MODE button to cycle through these options:
Step 4: Read the Display
This is the most common complaint about this model. The EverStart 6811A is a "smart" charger. It needs a minimum voltage (roughly 3-5 volts) to "sense" the battery before it will start charging.
The Fix: If your battery is reading 0 volts (dead dead), the charger will think nothing is connected. This charger looks intimidating with its buttons and
The manual specifies the following display readings. If you see something unexpected, here is the decoder:
| Display Reading | Meaning | Action Required | | :--- | :--- | :--- | | FLO (Flooded) | Indicates Standard battery type selected | No action; normal operation | | SUL | Battery is Sulfated (left dead too long) | Charger will attempt desulfation for 1 hr. If it fails, replace battery. | | Err (or F01) | Reverse polarity (Clamps are backwards) | Immediately swap the red/black clamps. | | F02 | Short circuit in clamps or dead battery cell | Inspect cables. If cables are fine, battery is dead. | | F03 | Battery voltage too low to accept charge (<2V) | Battery is likely beyond recovery. Replace. | | --- (or blank) | Battery voltage is extremely low | Try a different battery; this unit may not recover stone-dead batteries. | | 12.6v - 12.8v | Normal full charge (Float mode) | Disconnect or leave on maintainer. | Step 2: Plug it In The digital display will light up
Option A: Battery installed in vehicle (Negative Ground – most cars)
Option B: Battery removed from vehicle