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Ionic Batteries Lithium Ion Deep Cycle 12V125-EP has 12 volts and a 125Ah capacity and is perfect for powering your deep cycle systems. Features an internal microprocessor controlled battery management system (BMS) that monitors the key operational parameters during charging and discharging, such as voltages, currents and internal temperatures. https://youtu.be/ecoT696N-gI - Cell balancing and low voltage/over voltage protection, short-circuit protection - Maximize your energy potential with 99% Depth of Discharge (DOD) - Drop in replacements (plug and play) - Run as many needed in parallel Built For Long Lasting Reliable Power The Ionic Lithium Deep Cycle Battery has a cycle life of 3,000-5,000 cycles or about 10 calendar years. Our lithium ion batteries have a usable capacity of 99% compared to 50-60% for traditional lead-acid batteries]. Ionic Deep Cycle batteries function in the widest range of temperatures with a discharge temperature range (Functional) of –5°C to 35°C (23°F to 95°F) and a charge temperature range of -20°C to 45°C (-4°F to 113°F). Connectors: 3/8 UNC Threads allow the battery to be installed in any direction unlike lead-acid batteries which are fixed. Ionic Lithium Deep Cycle Batteries self-discharge rate per month is between 1-3% compared to lead-acid batteries which are about 30%. Max charge voltage is 14.6V and the discharge cut-off voltage is 10.5V. Max charge current is 80A and max discharge current is 100A / 350A(3s). Can be charged with solar chargers. Can be charged with most traditional lead-acid chargers that do not have “Desulfate” mode, provided the current levels do not exceed lithium battery charge specification. Using a traditional lead-acid charger that reaches 14.4-14.6 volts will allow the battery to be fully charged.