After installing a new battery pack in your Zhongtong LCK6108EVG4, don’t assume you can hit the road and push it to the limit immediately. New packs have different characteristics than old ones and require a "break-in" period. Fleet operators, take note of these 6 points:

First, avoid full charges and deep discharges.

For the first 50 cycles, keep the State of Charge (SOC) between 20% and 90%. Don’t take the BMS’s 100% reading as a true "full" state, and don’t wait until the charge drops below 10% before plugging in. Shallow charging and discharging help maintain cell consistency, saving you headaches for years to come.

Second, monitor temperature differentials closely for the first three days.

For the first three days after installation, check the temperature gap between the hottest and coldest points in the battery pack at the end of each shift. If the difference exceeds 8°C, investigate—it could indicate an air lock in the liquid-cooling lines or a poor connection in one of the modules. Don’t wait until the gap hits 15°C or more; by then, the cells will have already sustained damage.

Third, allow the BMS to "re-learn."

The BMS won’t recognize the new pack if it’s still holding onto degradation data from the old one. For the first 200 kilometers after replacement, the BMS’s SOC estimates may fluctuate. Drivers, be careful: don’t rely entirely on the displayed range—estimate your actual range at about 80% of what the gauge shows. After about a week of operation, the BMS will recalibrate itself.

Fourth, don’t max out the charging power.

For the first two weeks, keep the charging rate below 0.5C; avoid jumping straight to maximum-power DC fast charging. This allows the Solid Electrolyte Interphase (SEI) layer within the cells to form a stable structure, which helps prevent lithium plating during future fast-charging sessions. Saving half an hour today isn't worth shortening the battery's lifespan by years.

Fifth, inspect the high-voltage connectors.

The biggest risk during a battery swap is a connector that isn't fully seated. Use a torque wrench to re-tighten all connections before putting the vehicle into service, and check them again after the first shift. A loose connection is a serious issue—increased contact resistance leads to heat buildup, which can, in extreme cases, cause the connector to melt or catch fire. Sixth, record the initial data.

On the day of the replacement, take photos of the total voltage, the highest and lowest individual cell voltages, and the insulation resistance value as a baseline. Compare these figures each month thereafter; this allows you to detect any anomalies early—don’t wait until a breakdown occurs to start investigating.