Heltec DS1004 Display Active Balancer – 6S (NCM / LFP / LTO)The Heltec DS1004 Display Active Balancer is a 6-series (6S) intelligent active balancing module with an integrated voltage display, designed for lithium battery banks requiring precise cell equalisation and real-time monitoring.Unlike standard non-display balancers, this version provides live cell voltage visibility, allowing users to observe pack behaviour during charge, discharge, and balancing cycles without external diagnostic equipment.Technical SpecificationsProduct Model: DS1004 (Display Version)Series Configuration: 6SSupported Chemistries:NCM (Ternary Lithium)LFP (LiFePO4)LTO (Lithium Titanate)Operating Voltage Range:NCM / LFP: 2.7V – 4.2VLTO: 1.8V – 2.7VBalance Voltage Accuracy:±5mV (typical)Maximum Balance Current:Up to 5A–5.5A (when cell delta ≈ 1.0V)Current automatically tapers as voltage difference decreasesMinimum balance start differential: 0.01VUndervoltage Sleep Protection:NCM / LFP: 2.7VLTO: 1.8VAutomatically enters protection sleep below thresholdStatic Working Current:Approx. 20mASleep Mode Current:<0.1mAOperating Temperature Range:-10°C to 60°CExternal Power Requirement:None – powered through internal energy transfer within the battery packDisplay Functionality (Key Difference)The integrated display provides:Individual cell voltage monitoringReal-time voltage delta observationVisual confirmation of balancing activityImmediate identification of drift or abnormal cell behaviourThis makes it particularly useful in high-performance battery banks where monitoring voltage spread is critical.Working PrincipleThe DS1004 uses a capacitive energy transfer active balancing architecture.Instead of dissipating excess energy as heat, the system:Transfers charge from higher-voltage cellsRedistributes energy to lower-voltage cellsEngages the entire battery group simultaneously in the balancing processThis method improves efficiency and maintains pack consistency without resistive bleed loss.Hardware ConstructionUltra-low internal resistance MOSFET design2oz copper thickness PCB for high current handlingThree-proof conformal coating:Moisture resistantDust resistantCorrosion resistantShock resistantAnti-aging and insulation protectedApplication SuitabilityDesigned for:6S lithium battery banksLTO banks operating in 1.8V–2.7V per cell rangesPerformance systems requiring voltage consistencyInstallations where live voltage visibility is required