Household energy storage adopts different IP waterproof ratings for indoor and outdoor installation. Indoor wall-mounted batteries adopt IP54 to resist dust and splashing water for garages; outdoor ground-mounted versions apply IP65, fully dustproof and rainproof for long-term outdoor placement. High-end coastal models reach IP67 for short-time immersion resistance. Industrial energy storage containers mostly use IP54~IP55. Balancing moisture-proof, dust-proof and heat dissipation, IP65 has become the universal waterproof standard for outdoor household energy storage with balanced durability and cost.