AccuMate 6/12V Charger/Optimiser


  • Versatile, 4-step, automatic charger and maintainer for all modern and classic 6 & 12V lead-acid batteries up to 75Ah.
  • Ideal for long-term maintenance of batteries of irregularly or seasonally used vehicles & appliances; Especially specialist, classic, veteran & collectors’ vehicles.
  • Perfect for all types of rechargeable lead-acid batteries: filler cap types; absorbed acid ‘MF’ for motorcycles; valve regulated (VRLA); & GEL-electrolyte types.
  • Very easy to use – Select 6V or 12V charging output according to battery type and then connect to battery and mains power. The rest is fully automatic.
  • Comprehensive & intelligent LED indications – AC power on; battery voltage selection; wrong polarity connection; charging; and maintain (charge completed).
  • If a sulphated or neglected battery is unable to draw at least 200mA, the indication will not progress past the yellow charging LED.
  • The green maintain (charge completed) LED means exactly that, charging has been completed.
  • No risk of overcharging – AccuMate`s special monitoring circuits vary & regulate the current & voltage exactly according to the battery manufacturer’s specifications.
  • SAFE & foolproof – No worries about wrong connections, accidentally shorting the battery clamps or blowing fuses. Automatic protection even suppresses sparks.
  • Compact, yet powerful – Will safely charge 12V batteries discharged to as low as 3V (1.5V for 6V batteries) other chargers are unable to. Charging time equal to a 3 Amp conventional charger despite the compact size.
  • No risk of overheating – Automatic temperature control regulates charge current to a safe level in hot or enclosed conditions.
  • Delivered with two interchangeable connection sets, one with clamps for bench charging, the other with in-line protection fuse and eyelet terminals for permanent connection to the vehicle’s battery to allow easy reconnection of charger when necessary.
SKU: ACC Categories: , ,


The AccuMate is the sister product to the well established OptiMate battery charger/optimiser, which has a proven reputation with over 30,000 OptiMates sold annually in the UK alone. Like the OptiMate, the AccuMate is designed to automatically charge and monitor batteries with no danger of over-charging regardless of time. The AccuMate is suitable for all 6 and 12V lead acid batteries from 4Ah to 75Ah, making it perfect for owners of older vehicles which are not used on a daily basis.

Operation of the AccuMate is completely automatic. It uses a 1.2A constant current charge as the main stage, while monitoring the battery voltage. When this reaches a pre-set cut off point, it then switches to an intermediate constant voltage ‘float charge’. Only when the AccuMate has detected that the battery is properly charged, will it switch to the final stage for correct long-term battery maintenance, and indicate a green LED. If at any time the AccuMate detects that the battery has discharged, it will automatically revert to the constant current stage.

Lead Lengths
From mains plug to unit = 2m
From unit to connectors = 2.4m
Power usage on maintainance charge: <0.3 kwh/week


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