12V 140Ah Dual Purpose Lifepo4 Lithium Battery, 1000 CCA Group 31, Lithium-Ion Starter Battery Plus Deep Cycle, Built-In Smart Bms, Car Start-Stop, Fo

About these itemsDual - Functionality: These LiFePO4 lithium batteries serve a dual purpose. They can start vehicle or marine engines with their Cold Cranking Amps (CCA) ratings (ranging from 600 CCA to 1000 CCA) and also power various electrical devices with their respective capacities (30Ah to 140Ah).BMS Protection: All batteries are equipped with a dynamic Battery Management System (BMS). This system offers comprehensive protection against overcharge, over - discharge, overcurrent, short - circuit, low - temperature, and high - temperature conditions, ensuring secure operation.Bluetooth Connectivity: The lithium car starter batteries support Bluetooth. This enables real - time app monitoring of important parameters like capacity, voltage, current, power, cycles, temperature, and BMS status. Additionally, it allows for charge/discharge switch control and current/voltage calibration.ERM Function: The Engine Reserve Management (ERM) function automatically preserves 10% - 15% of the battery's power. This ensures reliable engine starts even after significant discharge, preventing situations where there is insufficient energy to crank the engine.Size Compatibility: Each battery has a specific BCI size. It's crucial to measure the old battery and compare it with the given dimensions (Group 24: 10.24 x 6.81 x 8.86 in, Group 31: 12.99 x 6.77 x 8.66 in, Group 47: 9.62 x 6.89 x 7.48 in) to ensure compatibility.Key DifferencesCapacity and CCA Ratings: The Duble EV12 - 140 has the highest capacity at 140Ah and a CCA of 1000, suitable for larger - scale power needs and engine starting. The Duble EV12 - 30 has the lowest capacity at 30Ah and a CCA of 600, ideal for smaller electronic devices. The Duble EV12 - 60 has a 60Ah capacity and 800 CCA, while the Duble EV12 - 105 has a 105Ah capacity and 1000 CCA.OTA Support: Only the Duble EV12 - 140 offers Over - the - Air (OTA) access to new features in addition to Bluetooth functionality.BMS Capacity: The Duble EV12 - 140 has a 200A BMS, while the Duble EV12 - 105, EV12 - 30, and EV12 - 60 have a 150A BMS. A higher - capacity BMS can handle more current, which is beneficial for the higher - capacity battery.Terminal and Adapter: The Duble EV12 - 140 comes with an M8 terminal and an M8 - to - AT adapter, while the other models have either AT/M8 terminals without an adapter mention.SpecificationsDuble EV12 - 105Item Model Number: Duble EV12 - 105Battery Capacity: 105 AhCold Cranking Amps (CCA): 1000 CCANominal Voltage: DC 12.8VNominal Power: 1344 WhStandard Charging Voltage: DC 13.6–13.8V (Recommended), DC 14.6V (Maximum)Discharge Cut - Off Voltage: DC 10VStandard Charging Current: 55AMaximum Continuous Discharge Current: 105APeak Discharge Current: 1200A/2SBCI Size: Group 24, 10.24 x 6.81 x 8.86 in / 260 x 173 x 225 mmTerminal: AT / M8Waterproof Rating: IP67BMS: 150A BMSCycle Life: 4000 Cycles (80% DOD)Duble EV12 - 140Item Model Number: Duble EV12 - 140Battery Capacity: 140 AhCold Cranking Amps (CCA): 1000 CCANominal Voltage: DC 12.8VNominal Power: 1792 WhStandard Charging Voltage: DC 13.6–13.8V (Recommended), DC 14.6V (Maximum)Discharge Cut - Off Voltage: DC 10VStandard Charging Current: 70AMaximum Continuous Discharge Current: 140APeak Discharge Current: 1200A/2SBCI Size: Group 31, 12.99 x 6.77 x 8.66 in / 330 x 172 x 220 mmTerminal: M8 (M8 - to - AT Adapter Included)Waterproof Rating: IP67BMS: 200A BMSCycle Life: 4000 Cycles (80% DOD)Duble EV12 - 30Item Model Number: Duble EV12 - 30Battery Capacity: 30 AhCold Cranking Amps (CCA): 600 CCANominal Voltage: DC 12.8VNominal Power: 384 WhStandard Charging Voltage: DC 13.6–13.8V (Recommended), DC 14.6V (Maximum)Discharge Cut - Off Voltage: DC 10VStandard Charging Current: 15AMaximum Continuous Discharge Current: 30APeak Discharge Current: 720A/2SBCI Size: Group 47, 9.62 x 6.89 x 7.48 in / 244 x 175 x 190 mmTerminal: AT / M8Waterproof Rating: IP67BMS: 150A BMSCycle Life: 4000 Cycles (80% DOD)Duble EV12 - 60Item Model Number: Duble EV12 - 60Battery Capacity: 60 AhCold Cranking Amps (CCA): 800 CCANominal Voltage: DC 12.8VNominal Power: 768 WhStandard Charging Voltage: DC 13.6–13.8V (Recommended), DC 14.6V (Maximum)Discharge Cut - Off Voltage: DC 10VStandard Charging Current: 30AMaximum Continuous Discharge Current: 60APeak Discharge Current: 960A/2SBCI Size: Group 24, 10.24 x 6.81 x 8.86 in / 260 x 173 x 225 mmTerminal: AT / M8Waterproof Rating: IP67BMS: 150A BMSCycle Life: 4000 Cycles (80% DOD)Package ContentFor all models (Duble EV12 - 105, EV12 - 140, EV12 - 30, EV12 - 60)1 x Dual Purpose LiFePO4 Lithium Battery1 x Screw Set1 x Washer Set1 x User Manual