# SAJ HS2 All-in-One Residential ESS *Brand: SAJ | Category: Hardware Product* Modular, stackable home energy storage solution combining a hybrid inverter and LFP batteries. ## Technical Specifications | Specification | Value | | --- | --- | | BATTERY TYPE | LiFePO4 (LFP) | | CAPACITY KWH | 7.3kWh - 25.0kWh | | INVERTER POWER KW | 5kW - 20kW | | UPS TRANSFER TIME | ≤ 10ms | | INGRESS PROTECTION | IP65 | | MANAGEMENT SOFTWARE | elekeeper App | | ROUND TRIP EFFICIENCY | 98% | ## Description # SAJ HS2 All-in-One ESS An integrated, plug-and-play energy storage tower that fits beautifully into any modern smart home, providing UPS-grade backup protection and smart grid scheduling.