The Oximiser 900 is the ultimate optimiser that no garage should be without. Designed to be left permanently connected to provide guaranteed long-term battery care, the Oximiser 900 is suitable for most 12V battery types up to 30Ah including Gel, MF and Acid batteries. Even Heavily discharged batteries as low as 4.1V can be charged if the battery is not damaged. Do not use on Lithium batteries.6 Stage battery management system:Polarity Check: Checks the battery leads have been connected correctlyBattery Analysis: assesses battery & determines best charging methodBulk Fast Charge: Charges at a fast rate to bring the battery to approximately 85% capacityAbsorption Charge: lowers the charge rate & gives a topping charge to ensure the battery is charged to 100%Voltage Check: hourly voltage checks assess battery healthMaintain Mode: Applies an appropriate charge if voltage drops outside acceptable limits to ensure the battery voltage and condition remains perfectKey specification as follows