Device charging company Anker is moving into Tesla's territory with the launch of the Solix line of home energy products, including a modular Powerwall-like battery storage system, the company announced at an event in New York City. It also introduced a smaller battery aimed at folks living in condos and apartments that can be used with its existing balcony-mounted solar panels.

The modular battery system, set to arrive globally in 2024, will be scalable from 5kWh of power (enough to run an average-sized house for a few hours) up to 180kWh, which could feasibly power a house for nearly a week. It's designed to deliver backup power to both existing and new solar installation, and Anker promises it will "provide high levels of safety and durability, seamlessly transfer to off-grid power and be compatible with home energy equipment such as heat pumps, oil- and gas-powered generators." It will also work with a "forthcoming EV charging solution," the company wrote.

The system will use lithium iron phosphate (LFP) batteries and operate at temperatures ranging from -20C to 55C (-4F to 131F). It's controlled by Anker's power management system and available with an app. Anker has yet to provide the all-important pricing, but said more information will be available "later this year." 

By comparison, Tesla's Powerwall 2 units have nearly triple the power (13.5kWh each), cost $11,500 each installed and can be scaled up to 135kWh. Standalone Powerwall installations qualify for a 30 percent residential federal investment tax credit, along with any state incentives.