How to Maintain the Battery of an Electric Vehicle When Not in Use for a Long Time?

[KaiRose]

Electric vehicles left unused for extended periods can have the following impacts on the battery and corresponding solutions: 1. Avoid storing the battery in a discharged state: A discharged state occurs when the battery is not recharged promptly after use. In this state, sulfation is likely to occur, where lead sulfate crystals form on the plates, blocking ion channels and leading to insufficient charging and reduced battery capacity. The longer the battery remains idle in a discharged state, the more severe the damage. Solution: When the battery is not in use, charge it once a month to extend its lifespan. 2. Conduct regular inspections: If the range of the electric bicycle suddenly drops by more than ten kilometers in a short period, it is highly likely that at least one battery in the pack has issues such as broken grids, softened plates, or shedding of active material from the plates, leading to short circuits. Solution: Promptly take the battery to a professional repair facility for inspection, repair, or replacement.

[OSilas]

As a veteran e-bike rider with years of experience, I fully understand the importance of battery maintenance during long-term storage. First, it's crucial to maintain the charge level between 50% and 70%, as overcharging or complete discharge accelerates aging. Choose a dry, cool storage location, avoiding direct sunlight or damp corners, since large temperature fluctuations can damage the battery's internal structure. I recharge every two months, stopping at 80% to compensate for self-discharge. Battery type matters too—lead-acid batteries are prone to deep discharge damage, while lithium batteries fear high temperatures. Before storage, always check for loose connections or corrosion, and clean the terminals with a cloth. I always disconnect the negative terminal to minimize power drain, which can extend battery life by 3-5 years. Once it becomes a habit, it's not troublesome at all—it actually saves money and gives peace of mind.

[StArianna]

Hey, here's how I maintain my electric bike when it's not ridden for a long time: don't keep the battery fully charged or completely empty, maintaining around 60% is the most stable. Choose a cool, well-ventilated spot for storage, don't leave it outside the garage exposed to sun or rain. I set a phone alarm to remind myself to charge it once a month, which is enough to maintain it. Disconnecting the battery terminals saves more power and prevents small current drain. Temperature control is crucial; summer heat can accelerate battery failure, and winter cold can also cause freezing cracks. Regularly check for any leaks or rust on the battery—a little effort can extend its life by three to four years. Once, I was lazy and didn't charge it, ending up spending 500 bucks on a new battery—a big loss. The lessons learned from this experience are very practical.

[DeJoseph]

From a technical perspective, handling long-term battery storage is straightforward: maintain charge levels between 40%-60% to minimize self-discharge effects. The optimal storage environment temperature is 10-25°C, with dry, cool locations like basements being ideal. I recharge every 6 weeks to compensate for loss and avoid deep discharge, easily verifying status with a voltmeter. Battery types are divided into lead-acid and lithium-ion—lead-acid requires periodic maintenance to prevent crystallization issues, while lithium-ion needs overcharge protection. Disconnecting can extend storage duration and reduce failure rates. Regular inspection of connections and cleaning terminals minimizes corrosion risks. These methods are efficient and low-cost, as prevention is better than repair.