Stormy and rainy days frequently occur in Australia, Southeast Asia and Middle Eastern coastal areas all year round. A large number of BYD drivers have the same doubt: whether it is safe to charge electric vehicles and plug-in hybrids in rainy weather. Some owners choose to delay charging for fear of electric leakage and battery damage, while others charge casually and ignore potential hidden dangers.
Based on BYD official waterproof parameters and after-sales maintenance data, this article clarifies all rainy-day charging doubts, sorts out safe operations and high-risk misoperations, and helps global owners avoid battery faults caused by improper rainy-season charging.
Does BYD Support Charging in Rain? Official Waterproof Standard
All mass-produced BYD new energy vehicles, including Atto series, Sealion series, Seal and DM-i hybrid models, adopt IP67 waterproof rating for charging ports and Blade Battery packs.
IP67 industrial-level waterproof means the charging port can resist short-term rain soaking and splashing.Daily light rain and moderate rain will not cause electric leakage or charging failure. Owners do not need to suspend daily charging because of ordinary rainy weather.
It is worth noting that waterproofing is not permanent waterproofing. Aging seals, accumulated dust and deformed charging port rubber gaskets will greatly reduce waterproof performance.
3 Charging Behaviors Strictly Prohibited on Rainy Days
1. Charging in Flooded Waterlogged Areas
Although the charging port is waterproof, do not park and charge in stagnant water with water depth exceeding 10cm. Sustained water immersion will reverse-flow into the chassis wiring harness, trigger short-circuit protection, and even corrode the bottom battery shell. This rule applies to all BYD family SUVs, especially Sealion 7 and Sealion 8 large-size vehicles with higher chassis clearance.
2. Plug and Unplug Charging Gun in Heavy Thunderstorms
Avoid inserting or pulling out the charging gun during thunder and lightning storms. Instant lightning surge will impact the vehicle on-board charger module, resulting in irreversible electronic component damage. If it rains suddenly after charging starts, keep the charging state stable and do not cut off power manually.
3. Use Damaged Aging Charging Cables in Rain
Charging cables with cracked outer skin, exposed internal wires and loose interfaces lose waterproof ability. Using damaged charging equipment on rainy days is the biggest cause of electric shock risk and vehicle fault codes.
Correct Step-by-Step Rainy Day Charging Operation
- Wipe the charging port surface and rubber seal with dry towels before charging to drain accumulated rainwater
- Stop charging and close the charging port cover tightly when encountering heavy thunderstorms
- Choose elevated, well-drained parking spots to avoid water accumulation under the vehicle
- Do not wash the charging port with high-pressure water gun after rainy-day charging
Post-Rain Charging Maintenance Tips
1. Regularly Clean Charging Port Debris
After rainy days, mud, sand and fallen leaves will stick to the charging port gap. Long-term accumulation will wear rubber sealing rings, reduce waterproof performance, and cause poor charging contact. Simple cleaning every two weeks can effectively avoid such failures.
2. Check Chassis Hidden Stains
Rainwater mixed with road salt and dust will corrode chassis fasteners slightly. After driving and charging in heavy rain, properly inspect the underbody to keep chassis components stable.
3. Prevent Cabin Damp Mold
Humid rainy weather brings moisture into the car cabin, leaving stubborn stains on footwell carpets and trunk gaps. Original factory water-absorbent carpets easily breed mold and produce peculiar smells if not cleaned in time.
Common Owner Misconceptions
Myth 1: Rainwater will penetrate into Blade Battery
Fact: BYD battery pack adopts fully sealed metal shell. Normal rainfall cannot penetrate the battery shell, and will not cause battery water inflow.
Myth 2: Rainy charging will increase power consumption
Fact: Standard rainy charging will not change charging power and energy consumption. Only blocked heat dissipation caused by muddy dust will affect charging efficiency.
Conclusion
BYD new energy vehicles have reliable factory waterproof performance, and owners can charge normally on daily rainy days. As long as avoiding waterlogged parking and thunderstorm plugging operations, rainy-day charging will not damage vehicles or batteries. Routine inspection and cleaning can maintain vehicle waterproof performance and extend overall service life.
For long-term charging port protection and waterproof cabin maintenance that fits BYD original vehicle structure, many global owners adopt customized model-specific BYD protective accessories to avoid daily abrasion and rain erosion.