Easy to use and simple to operate: just insert the battery with correct polarity, paying attention to the positive and negative terminals. Quick assessment of battery health: a dedicated battery capacity measurement tool for home use that tells you whether the battery is good. Clear, direct display: the builtin plate with a pointer shows the measurement result at a glance, making it easy to check battery status. Portable and compact: small and lightweight, easy to carry in a pocket or backpack for onthego tests. Practical use scenarios: Home convenience: regularly test batteries in remote controls, wall clocks, toys, and wireless peripherals to avoid unexpected power loss. Rechargeable batteries: check the capacity of NiMH or other rechargeable cells to decide whether to recharge or . Emergency readiness: keep in your emergency kit and verify backup batteries before an outage or travel. Key attributes at a glance: simple operation, reliable indication of battery health, compact size for easy storage, and a straightforward, readable display for quick checks.