Episode Summary
Executive Summary: Eddie Chang explains how Moment Energy repurposes used EV batteries into safer, lower-cost stationary storage for off-grid and commercial/industrial customers. The conversation covers the company’s origin in an engineering race team, the battery end-of-life problem, the technical challenge of second-life battery management, customer economics, market timing, and the broader policy shift needed to accelerate battery circularity and electrification.
Main Topics: Moment Energy’s origin and mission (Priority: 5/5): The company began when the founders, all mechatronics engineers, pivoted from building an electric Formula-style race team to solving EV battery waste and clean energy storage. Why EV batteries need second life (Priority: 5/5): Eddie argues that many EV batteries still retain substantial usable life when removed from vehicles, but are unsuitable for high-stress driving and can be better utilized in stationary storage. Technical moat: battery management for heterogeneous second-life batteries (Priority: 5/5): Moment’s differentiation is its battery management system and validation process, which are designed to safely handle packs with varying state of health and optimize usable energy. Target markets and product-market fit (Priority: 4/5): The company initially focused on off-grid residential and remote applications, then expanded toward commercial and industrial sites where short-duration storage and grid resilience are in demand. Economics, competition, and customer value proposition (Priority: 4/5): Moment competes against lead-acid and new lithium solutions by offering lower cost, better performance, safety, and sustainability, with economics strong enough to win even before emphasizing ESG benefits. Policy, supply chain, and scale-up outlook (Priority: 4/5): The discussion highlights looming end-of-life battery volumes, the need for producer responsibility laws in North America, and Moment’s shift from custom projects to manufacturing scale.
Key Arguments: EV batteries are often discarded prematurely even though they retain meaningful capacity and can support stationary applications for many additional years. Repurposing is more practical than immediate recycling because recycling infrastructure for lithium batteries is still immature and expensive. Second-life batteries are hard to deploy safely because batteries degrade differently based on climate, usage, and age, requiring sophisticated BMS software. Moment’s value lies in its data-driven BMS and validation workflow, which help maximize safety, usable capacity, and lifetime across mixed-health battery modules. Off-grid and C&I markets are a better initial fit than utility-scale because customers care about performance, safety, resilience, and ESG, not just the lowest sticker price. Battery supply is becoming a major advantage for second-life companies because large volumes of end-of-life EV batteries are expected in the coming years. North American policy should make automakers responsible for end-of-life batteries, which would accelerate repurposing and reduce costs pushed onto consumers.
Data Points: MCJ membership size: More than 1,300 members - Jason describes the climate-focused Slack community that preceded the interview. Screening criteria for MCJ membership: 4 criteria - Determination, ambition, optimism, and collaborative spirit are listed as the membership filters. Share of EV batteries responsibly recycled: 5% - Eddie cites the low current rate of responsible EV battery recycling. Average remaining life in EV batteries: 80% life left - He says batteries often still have substantial capacity when removed from vehicles. Typical second-life battery extension: 7+ years; potentially 7, 10, 15 years - Eddie says repurposing can add many years before final recycling. Stress on stationary batteries: 1 C - Maximum typical stress factor for stationary storage applications. Stress on EV batteries: 5 to 8 C - High stress during rapid acceleration or fast charging in vehicles. Lead-acid battery cycle life: About 500–600 cycles - Used as a comparison for off-grid daily cycling performance. Potential life of lead-acid in daily cycling: Under 2 years - Eddie explains why lead-acid performs poorly in off-grid use. Cost to recycle a lithium EV battery: $4,000 bill - Cited as the approximate recycling cost that motivates OEMs to repurpose or avoid direct disposal. Second-life pricing versus new lithium: 55% cheaper - Moment’s current pricing advantage after a standard sales margin. Customer willingness to pay: Two-thirds the cost of new - Eddie says buyers generally want about a 33% discount for second-life batteries. Team size: 20 employees - Moment has grown from four founders and an intern to a 20-person team. Seed round timing: Closed in September - Eddie notes the company recently completed its seed financing. Projected end-of-life EV storage supply by 2030: 200 to 300 GWh - He cites McKinsey projections for available end-of-life EV battery energy storage.
Pivotal Quotes: "We found out that, hey, there's a huge, huge timeframe where nobody's going to be able to recycle these batteries. But at the same time, as we dug in, as engineers, we're like, wait, there's an average of 80% life left in these batteries." — Eddie Chang: Explaining the insight that led Moment Energy to pursue battery repurposing instead of recycling alone. "What we're really seeing is that the big market opportunities on grid, commercial industrial." — Eddie Chang: Describing where Moment sees its strongest near-term growth opportunities beyond off-grid use cases. "Our goal is to achieve that every single electric vehicle battery is repurposed." — Eddie Chang: Stating the company’s long-term vision for circularity and second-life battery deployment.
Implications: Second-life EV batteries can reduce waste, lower storage costs, and speed electrification, especially in underserved C&I and remote markets. If policy shifts force producer responsibility, the sector could scale quickly and create a circular battery economy.