The OptiMate 1 Duo automatically charges 12V lead-acid (Pb) and 12.8V lithium motorcycle batteries. It features reverse polarity protection, spark suppression, and automatic shut-off for safe operation. The charger revives weak batteries, extends battery life, and prevents overcharging during continuous use.
(*4-Step Charging)
LED Indicator: LED #2 flashing
The charger limits current to 200mA, allowing the battery to gently recover to a safe voltage level of 8.8 volts. Once it reaches this threshold, the unit delivers current up to 0.6A in pulses to prepare the battery for normal charging.
Charge Time: Minimum 15 minutes, maximum 2 hours
LED Indicator: LED #2 steady
During the BULK CHARGE stage, the charger delivers a constant current of about 0.6 amps maximum into the battery until it reaches 14.2-14.5V.
Duration: 30 minutes
The program spends 30 minutes verifying the charge level. If the battery needs additional charging, the program returns to BULK CHARGE for brief periods, delivering variable current pulses to the battery. These reversions repeat as many times as necessary to reduce the battery's current demand below 200mA at 13.6V—indicating the battery has accepted as much charge as its condition allows.
Note: For safety, there's an overall charge time limit of 24 hours. After this period, the program automatically advances to Step 4.
Pattern: Voltage retention tests alternate with battery maintenance every 30 minutes