2-Wire Voltmeter Battery Capacity Indicator DC 7-100V Digital Circular Voltage Current Meter Volt With Power-Off Memory Function

🔋 Frustrated with battery indicators that only work for one chemistry or lose settings after power off?Need a single, universal meter that handles Lithium, LiFePO4, and Lead-Acid batteries from 7V to 100V – with custom voltage thresholds, low battery alarm, and memory that never forgets your settings? This Digital Battery Capacity Indicator is exactly what you need.Key Features🔁 Universal Battery Compatibility- Ternary Lithium (L): L03S to L22S (3S–22S)- LiFePO4 (F): F03S to F26S (3S–26S)- Lead‑Acid (P): 12V / 24V / 36V / 48V / 60V / 72V / 84V (preset)- Custom Mode: Set your own fully charged & discharged voltage values – any battery type.📊 Clear Voltage & Percentage DisplayRed/blue/white digital tube screen. Touch the front button to switch between voltage and remaining percentage.⚠️ Low Voltage AlarmWhen battery level ≤10%, the battery icon flashes to warn you – no unexpected shutdowns.💾 Power-Off Memory (Always Saves)All settings (battery type, custom voltages, alarm thresholds) are automatically saved even after disconnecting power. No need to reconfigure every time.👆 Easy Operation- Front touch key: switch between voltage / percentage display, or wake up screen from sleep.- Back mode key: long press to enter settings, adjust parameters.📏 Compact & Easy MountSize 32x32x28mm, panel cutout 29.25mm. Fits any dashboard, battery box, or DIY project.Technical SpecificationsParameterValueVoltage Measurement RangeDC 7 – 100VOperating Current≤20mADisplayDigital tube (red / blue / white options)Supported Battery TypesTernary Lithium (3S‑22S), LiFePO4 (3S‑26S), Lead‑Acid (12/24/36/48/60/72/84V) + CustomLow Voltage AlarmFlashes when ≤10% remainingMemoryYes – saves all parameters after power offControlsFront touch key (switch/wake) + rear mode key (settings)Cutout Size29.25mm (panel mounting)Product Dimensions32×32×28 mmIncluded in PackageIndicator + wiring cableTypical Use Cases (Perfect for Your Project)✅ Electric Bike / Scooter / E‑SkateboardMonitor your lithium or LiFePO4 battery pack in real time. Set low voltage alarm to protect battery from over‑discharge.✅ RV / Camper / Caravan House BatteryKeep track of lead‑acid or lithium house battery capacity. The memory function remembers your setup even after disconnecting.✅ Golf Cart / Utility VehicleReplace cheap fuel gauges with a precise percentage meter. Works with 36V, 48V, 72V packs.✅ Solar Power SystemMonitor battery bank voltage and SOC (state of charge) for 12V to 84V systems. Custom mode lets you dial in exact cut‑off voltages.✅ Marine / Boat / Trolling MotorWater‑resistant? No, but you can install it inside a dry cabin. The 7‑100V range covers most marine battery setups.✅ DIY Battery Packs (18650 / LiFePO4 / Lead‑Acid)Perfect for custom builds. Choose L/F/P preset or enter your own voltages via custom mode.Package Includes1 × Battery Capacity Indicator (digital display)1 × Wiring harness (red & black leads)