1. Digital Voltmeter With Capacity Indicator: Monitors DC 10V100V range for accurate battery status, showing voltage, capacity percentage and temperature on a clear LED display, enabling quick diagnostics for various energy storage setups. 2. Wide Battery Compatibility: Compatible with ternary lithium, leadacid, and lithium iron phosphate batteries; three selectable modes with poweroff memory to keep configurations steady in diverse testing environments. 3. Temperature Control & Alerts: Adjustable control from 20C to 110C with ±1C accuracy, plus /low temperature and voltage alarms to help prevent damage from extreme operating conditions. 4. Robust ABS Construction: Black thickened casing resists heat and wear, providing durability for industrial, laboratory, or mobile energy applications, even under demanding usage cycles. Practical use scenarios Solar energy storage systems: monitor battery packs across chemistries to quickly verify status and prevent overdischarge or overcharge. Automotive or portable power packs: track voltage, capacity, and temperature during charging and discharging cycles to ensure safe operation. Laboratory battery testing: evaluate different battery chemistries with repeatable configurations using the three selectable modes and poweroff memory.