In the understanding of many novice electricians and junior operation and maintenance personnel, "battery maintenance" is often equated with "measuring terminal voltage with a multimeter and wiping dust off the battery casing with a cloth". However, the experienced team leaders who have been working on the front line of substation maintenance for more than ten or twenty years know that this kind of superficial maintenance that relies on the weather cannot be considered professional maintenance at all.

From the first day of operation, the battery undergoes continuous chemical reactions internally. If the battery is in a low current float charging state for a long time, small lead sulfate crystals will gradually precipitate on the surface of the electrode plate. If not intervened in time, the small crystals will gradually coarsen and aggregate, forming hard, inert, non-conductive, and insoluble "large lead sulfate crystals", ultimately leading to the premature and complete scrapping of the battery.

How can a set of batteries be stably used for 8, 10, or even longer?

Today, we will share with you the "Three Step Method for Daily Scientific Management of Batteries" summarized by the senior substation operation and inspection team leader for many years. The hardcore equipment for this maintenance secret is the HZHH-300 Battery Intelligent Activation Instrument produced by Baoding Huazheng Electric Manufacturing Co., Ltd!

Strategy 1: Regularly conduct internal resistance/voltage surveys to screen for "early suspected outdated units"

Conduct routine DC inspections every month or quarter, with a focus on individual cells in the entire battery pack where the terminal voltage deviates from the average value by more than ± 0.05V or the internal resistance is significantly higher;

Write down the serial numbers of these batteries and list them as key "physical examination objects". Do not wait for them to completely fail and cause tripping before asking.

Strategy 2: Verify the authenticity of the discharge and eliminate the practice of "being in service with illness"

Traditional maintenance makes it difficult to discharge a single battery cell, while HZHH-300 makes single cell nuclear capacity exceptionally simple;

Bring the HZHH-300 portable handheld device to the site, clip it between the suspected battery terminals, set a constant current (20A-50A can be set for a 2V battery), and perform a brief verification discharge;

View the real-time discharge curve and capacity accumulation on the 7-inch color screen. If the voltage drops sharply just after 50% of the rated capacity during discharge, it is confirmed as a "fake good but actually bad" lagging unit.

Strategy 3: Timely target multiple cycles of activation to nip degeneration in the bud stage

Many outdated batteries only have initial mild sulfurization crystallization on the surface of the electrode plate, which is completely reversible degradation;

At this point, there is no need to remove the battery. Simply activate the [Single Activation] function of HZHH-300 and set a microcirculation charge and discharge cycle of at least 3 rounds;

The equipment automatically alternates between low-voltage pulse charging and discharging, strongly intensifying the deactivated active substances on the surface of the electrode plate, and restoring and dispersing coarse crystals back into the electrolyte;

After activation, the effective capacity of the battery can often be restored to a healthy baseline!

Serious illnesses are difficult to treat, minor illnesses can be treated early. Normalize this standard process and combine it with the lightweight, portable, intelligent, and efficient HZHH-300 to easily extend the comprehensive service life of the entire battery pack by 3 to 5 years, saving more than hundreds of thousands of battery procurement costs!