The mechanical battery that stores energy silently
Replace noisy, chemical-filled backup batteries with Gravli — a compact gravity battery that fits in your closet. Lifts a 300lb weight using excess solar power, lowers it to generate electricity when the grid fails.
During a blackout, you watch the sleek 300lb steel weight in your hallway silently descend on its rail, powering your entire home for 8 hours while your neighbors' batteries died hours ago — no noise, no chemicals, just gravity doing what it does best.
Direct-to-consumer pricing. No middlemen.