Author: Lia Publish Time: 2025-12-19 Origin: Site
At an altitude of 4,500 meters in Ngari, Tibet, winter temperatures drop to –18°C, while oxygen levels fall to just 50% of those at sea level.
For years, routine battery capacity testing at substations in this region meant engineers carrying heavy equipment across snow-covered mountains, traveling more than 300 km for a single inspection. Each manual test cost over USD 15,000, with data errors of up to 5%, and even posed the risk of backup power failure due to misjudgment.
Today, this challenge has been fundamentally transformed.
With DFUN’s remote online battery capacity testing solution, operators can now complete a full battery health check with one click, from hundreds of kilometers away — without travel, interruption, or manual wiring. This breakthrough marks a major step forward in intelligent power system operation, especially in extreme environments like the Tibetan Plateau.
In regions such as Ngari, traditional battery testing faces three critical barriers:
Substations are often separated by more than 300 km, making travel, equipment transport, and manpower extremely expensive.
Low oxygen levels and extreme cold increase the likelihood of altitude sickness, frostbite, and operational accidents during on-site work.
Manual wiring and data recording are vulnerable to low temperatures, often requiring multiple engineers and producing unreliable results — directly affecting backup power reliability.
These challenges highlight a growing industry reality: manual battery testing is no longer sustainable for modern power grids.
Built on years of experience in battery monitoring systems (BMS) and DC power infrastructure, DFUN developed a remote, online, automated battery capacity testing solution tailored for harsh environments and large-scale battery banks.
Enhanced thermal design and plateau-grade insulation materials improve heat dissipation efficiency by 50%, restoring insulation performance to over 90% of low-altitude levels.
Advanced temperature compensation and self-calibration algorithms keep measurement accuracy within ±0.5%, comparable to laboratory standards.
Dual-link communication and intelligent control ensure 8–10 hours of uninterrupted discharge testing, even in complex electromagnetic environments.
In real operation, the system achieved zero on-site commissioning, successfully completing 23 consecutive remote capacity tests under –18°C conditions — while identifying early signs of abnormal internal resistance in one battery string 15 days in advance.
DFUN’s solution integrates remote battery monitoring, capacity testing, and cell-level analysis into one intelligent platform.
Key benefits include:
Real-time monitoring of voltage, internal resistance, temperature, SOC, and SOH
Early fault detection at the individual cell level, preventing thermal runaway
Grid-connected energy feedback, returning discharge energy to the grid and reducing carbon emissions
Remote centralized management, significantly cutting travel, labor costs, and safety risks
By combining battery capacity testing with an advanced Battery Management System, DFUN helps substations and power utilities move from reactive maintenance to predictive, data-driven operation.
The successful deployment of DFUN’s remote battery capacity testing solution in Tibet marks a shift toward intelligent, digital, and sustainable grid operation.
More than a technical upgrade, it demonstrates how advanced battery monitoring and BMS technologies can safeguard critical power infrastructure — even at the world’s highest altitudes.
From substations and telecom sites to data centers and industrial power systems, DFUN continues to deliver reliable battery management solutions that keep power systems safe, efficient, and future-ready.
Learn more about DFUN battery monitoring and remote capacity testing solutions at www.dfuntech.com
