Introduction
Thank you for your recent purchase of OPTIMA's Digital 400. OPTIMA
performance automotive battery maintenance to new levels of design and performance.
Designed with advanced digital charging technology, the Digital 400 delivers multi-stage
charging, conditioning, automatic battery maintaining and reconditioning modes in addition
to quick set controls and an industry leading LCD information display center. The ultra-
premium Digital 400 will fully charge and maintain all types of 12 Volt batteries while
significantly extending their lives.
Versatile Use:
For 12 Volt automotive, motorcycle, marine, tractor, power sports, RVs and more.
Benefits of OPTIMA's Digital 400 Charging Technology:
Microprocessor and software controlled charging.
Fully automatic, multi-stage performance charging, conditioning, maintaining and storage
reconditioning modes for all 12V AGM and flooded batteries.
Enhances the performance of OPTIMA
®
and other AGM batteries.
Extends battery life.
Quick set, single touch operation for charging by battery type.
Innovative LED/LCD display for charging, maintaining and fault mode indication.
Interchangable battery clamps or ring terminal connections for ease of use.
Recovers discharged batteries that other chargers cannot.
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Digital 400
®
has taken 12 Volt
Important Safety Instructions
SAVE THESE INSTRUCTIONS
This manual contains important safety and operating instructions for the OPTIMA
400 12V Battery Maintenance Charger.
WARNING
To reduce the risk of injury to user or property; the user must read and understand the instruction
manual and all warnings on the charger and batteries before use.
WARNING
RISK OF EXPLOSIVE GAS MIXTURE. Read instructions in manual before using charger.
1. Connect and disconnect battery leads only when supply cord is disconnected.
2. For a battery installed in a vehicle, first connect charger output lead to ungrounded battery
post - not connected to automobile chassis - in accordance with polarity identification and then
opposite polarity lead to chassis away from battery; do not connect to carburetor or fuel
lines. Disconnect chassis lead first. For battery not installed in vehicle, refer to Instruction Manual.
3. Do not overcharge battery - See Instruction Manual.
4. Do not smoke, strike a match, or cause a spark in vicinity of battery.
5. Use in well-ventilated area.
6. Refer to Instruction Manual for further details.
WARNING
This equipment employs parts, such as switches and relays, that tend to produce arcs or sparks and
therefore, if used in a garage, locate in a room or enclosure provided for the purpose or not less than
18 inches above the floor.
CAUTION
Risk of Electric Shock. Connect only to properly grounded outlets.
Do not expose to rain or snow.
If cords or wires/cables become damaged return complete unit to OPTIMA for service/repair immediatel y .
CAUTION
1. WARNING - RISK OF EXPLOSIVE GASES.
a. WORKING IN THE VICINITY OF A LEAD-ACID BATTERY IS DANGEROUS. BATTERIES
GENERATE EXPLOSIVE GASES DURING NORMAL BATTERY OPERATION. FOR THIS
REASON, IT IS OF UTMOST IMPORTANCE THAT YOU FOLLOW THE INSTRUCTIONS
EACH TIME YOU USE THE CHARGER.
b. To reduce risk of battery explosion, follow these instructions and those marked on the battery.
Review cautionary marking on these products and on engine.
2. Use charger for charging a LEAD-ACID battery only. It is not intended to supply power to an
extra-low-voltage eletrical system or to charge dry-cell batteries. Charging dry-cell batteries
may burst and cause injury to persons and property.
3. NEVER smoke, strike a match or cause a spark or flame in vicinity of battery or engine.
4. NEVER charge a frozen, damaged or leaking battery.
5. If it is necessary to remove battery from vehicle to charge it, always remove grounded terminal
from battery first. Make sure all accessories in the vehicle are off in order to prevent an arc.
Digital 400
®
Digital
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