In meter data collection, a widely overlooked reality is that not all metering points have reliable external power. Outdoor pole‑mounted electric meters, temporary construction power monitoring points, and remote irrigation metering stations often lack convenient power access. Running power lines from nearby sources is not only costly in terms of construction but may also involve complex administrative approvals. Tespro's TD‑DTU‑PLUS model is specifically designed for this need, featuring a built‑in 27,000 mAh high‑capacity rechargeable battery that provides up to 15 days of continuous operation on a full charge while collecting and transmitting data. This means even with external power completely disconnected, the device continues working normally for half a month — a practical solution for metering points with difficult power access.
The real‑world applications of this battery backup capability are extensive. In agricultural irrigation metering, many water intake points are located in open fields with no power lines. Traditional solutions require solar panels plus batteries, which are costly and complex to maintain. The TD‑DTU‑PLUS can be installed directly next to the meter, operating on its internal battery, requiring only a battery swap or recharge every 15 days. For municipal pipeline monitoring, many valve pits and flow meters are underground with similarly difficult power access. The TD‑DTU‑PLUS battery‑powered solution brings these points into remote monitoring range. For temporary monitoring projects — such as dust monitoring during road construction or temporary power statistics during events — the TD‑DTU‑PLUS battery feature makes deployment extremely simple, with no power construction needed: place the device and start working.
TD‑DTU‑PLUS also features thoughtful charging and power management design. The device supports standard Type‑C charging, allowing recharging with ordinary phone chargers or power banks. When external power is available, the device automatically switches to external power while simultaneously charging the internal battery, preserving battery life. The battery management system monitors battery health and automatically enters low‑power mode when charge is low, extending operating time. Combined with the cloud management platform, operations staff can remotely view each device's battery level and remaining operating time, planning on‑site maintenance in advance. For utility companies advancing large‑scale AMI deployments but facing power access difficulties, the TD‑DTU‑PLUS battery backup capability means more metering points can be brought into remote monitoring range without abandoning data collection due to power supply issues.
