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What specific precautions should be taken when charging?

Release time:

2026-05-08 09:46

Although lead-acid batteries are robust and durable, improper charging can easily cause them to swell, lose electrolyte, or even become unusable. To extend battery life and ensure safety, be sure to observe the following precautions during charging:

Pay attention to the charging environment.

Ensure adequate ventilation and heat dissipation: Batteries generate heat during charging, so never charge them in enclosed spaces or high-temperature environments. If you’re charging an electric vehicle, never bring the battery indoors or into the building’s common areas to charge—doing so could pose serious safety risks.

Avoid extreme temperatures: Do not charge the device in direct, intense sunlight or in extremely cold, freezing conditions. The optimal charging temperature is typically between 0°C and 40°C.

Strictly match the charger

For dedicated vehicles only: Always use the original or a reputable brand charger that matches the battery’s voltage and capacity. Never mix chargers—for example, do not use a 48V charger to charge a 60V battery. Voltage mismatches can easily damage the battery or even cause a fire.

Inspect the wiring: Before charging, check that the charger plug and outlet are in good condition to prevent poor contact and potential electrical sparks.

Control charging time

Avoid overcharging: Once the indicator turns green, simply keep the battery in float charge for 1 to 2 hours before disconnecting the power. Prolonged overcharging—such as charging continuously for more than ten hours or even several days—can cause severe water loss and lead to battery swelling and deformation.

Do not store the battery with a low charge: Recharge it promptly after use—do not wait until it is completely discharged. If the battery will remain unused for an extended period, recharge it about once every month to prevent it from being rendered unusable due to excessive self-discharge.

Charge as you go: Lead-acid batteries do not suffer from the memory effect, so it is recommended to perform shallow charges and discharges. Charging the battery promptly after each day’s use is beneficial for extending its service life.

Master the charging sequence (a key habit)

Adhering to the correct insertion and removal sequence can effectively prevent electrical arcing from damaging the battery connector:

To begin charging: first plug in the battery connector, then connect to a 220V power outlet.

When charging is complete: first unplug the 220V power cord, then disconnect the battery connector.

Monitor battery status

Do not charge immediately after use: If you have just finished riding or driving, the battery will be at a high temperature. It is recommended to let it sit for about half an hour until it cools down to room temperature before charging.

Stop immediately upon detecting any abnormalities: If you detect a pungent, unusual odor during charging, hear abnormal noises, or feel that the battery casing is excessively hot or has bulged, immediately disconnect the power supply, cease use, and have the device inspected by a qualified technician.

Developing good charging habits can typically extend the service life of lead-acid batteries by six months to one year.

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