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Optimate 12V DC to DC Battery Charger

Optimate 12V DC to DC Battery Charger
Optimate 12V DC to DC Battery ChargerOptimate 12V DC to DC Battery ChargerOptimate 12V DC to DC Battery Charger
MDS Price:  £87.95(£73.29 Exc. VAT)


In stock, immediate despatch  

In stock, immediate despatch

Part Number:  OPTIMATE-DC

This is the latest version of the Optimate DC - now compatible with LiFEPO4 Lithium batteries as well as standard lead acid batteries


You can now recover, charge and maintain your 12V car, motorcycle, ATV or Jet-Ski battery without mains power!

The OptiMate DC can be used to charge or maintain a 12V battery from another 12V source such as a car or leisure battery - you'll need a source battery ideally 1.5x or more the capacity of the battery you are charging.


  • 7-stage charging program for recovery charging analysis testing and maintenance
  • Compatible with 12V standard lead acid, GEL and AGM batteries and LiFEPO4 Lithium batteries
  • Suitable to charge a battery from as low as 1V
  • Charges at up to 2A depending on conditions.
  • Suitable for charging 12V batteries from 6Ah to 96Ah.
  • Automatic shut-down when input voltage drops below 10v to prevent damage to the source battery
  • Suitable for use with source batteries of at least 1.5x the capacity of the maintained battery.
  • Uses approximately 0.3Ah per day from the source battery for each 10mA of drain on the maintained battery.
  • IP54 rated splash-proof housing.
  • Suitable for portable use or wall mountable.
  • Input cable 0.3M, output cable 2.0M.
  • Includes all necessary cables

How it Works - 7 Steps

  1. Safety Check - The must be connected to a battery with at least 1V to activate output
  2. ​Desulphation and Recovery - If due to sulphation the battery's resistance is abnormally high, a voltage up to 20V is automatically applied to overcome this so as to recover very flat or neglected batteries until they are able to accept the normal charge program.
  3. Bulk Charge - A constant current of 2 A (max) efficiently brings the battery close to full charge.
  4. Charge Verification - The circuit verifies battery charge level (2 hours maximum). If the battery requires further charging, BULK CHARGE recommences for brief periods. These revisions may occur as many times as is necessary to reduce the battery's current demand below 200mA at 13,6.
  5. Charge Retention Test - Delivery of current ot the battery is interrupted for 30 minutes, determining the battery's ability to retain charge. For batteries with a GOOD state of health, LED #5 (green) should continue to flash for the full 30 minute period.
  6. Charge Maintenance Phase - LED #5 or 6 indicates depending on the outcome of the voltage retention test.The maintenance charge mode is designed to preserve the DC source battery whilst maintaining the battery connected for maintenance at full charge. A charge period intermittently alternates with a monitor period. Length of charge and/or monitor period depends on the drain of connected circuitry from the MAINTAINED battery. A charge period is activated when voltage of a the maintained battery reduces below 12.9V and continues until the voltage reaches 13.6V. LED #5 or 6 indicates continuously during the charge period. During a monitoring period no charge is delivered. Current draw from the SOURCE battery is limited to what the charger requires to monitor the MAINTAINED battery. During battery monitoring mode LED #5 or 6 will flash every 10 seconds to indicate battery status (as determined during the previous voltage retention test). The charge and monitor cycles will repeat until either the SOURCE battery (or DC supply) or MAINTAINED battery is disconnected or the SOURCE battery is completely discharged.
  7. Source Battery Protection - Warning light and automatic shut-down. Once the source battery voltage reduces below 10V, the OptiMate DC-DC will shut off avoiding deep discharge of the source battery.





The Optimate DC is suitable for all types of lead acid batteries and LiFEPO4 Lithium batteries

  • Standard lead acid, GEL and AGM types batteries between 6Ah and 96Ah
  • LiFEPO4 Lithium batteries





 To download the Optimate DC spec sheet





All prices include free mainland UK delivery - other than certain remote areas that may attract a delivery surcharge.

All Royal Mail deliveries are sent by first class post and are free to all UK postcodes.

Most UPS deliveries are free however remote areas may have a delivery surcharge; these are generally the Scottish Highlands and Islands, most off shore islands and a few other remote or inaccessible parts of the UK.

Certain products are unavailable for post/courier delivery due to restrictions on shipping hazardous substances; these will be available for collection only or in most instances can be shipped via specialist courier or pallet service at an additional charge.

If you have any delivery problems, require technical assistance or would simply like to speak to a human being then please call us.

For further delivery information click here



Will this work with my lithium motorbike battery?
Yes this is the latest version of the Optimate DC and it is compatible with LiFEPO4 Lithium batteries