Mr. McGuire: "I just want to say one word to you. Just one word."

Benjamin: "Yes, sir."

Mr. McGuire: "Are you listening?"

Benjamin: "Yes, I am."

Mr. McGuire: "[Batteries]"

Benjamin: "Exactly how do you mean?"

Mr. McGuire: "There's a great future in [batteries]. Think about it. Will you think about it?"

-The Graduate (1967)

While it would completely wreck the symbolism of the movie scene, I stand firm in saying that the next big wave of disruption to the way we build and do things, the one that has the greatest impact on the future of our species, is imminent battery innovation. Whether for mobility, grid storage, winged pseudo-satellites that threaten low-Earth-orbit (LEO) satellites’ very existence, or portable devices, some of the ways we do those applications today will seem as archaic as the steam engine in just a few years.

My movie speech, above, to Budding Benjamins is in sync with their generational concerns and goes completely against the wrecking ball that a few of my Boomer cohorts have foisted upon the planet and its occupants. Yes, a few of us Peter Pans out there want to leave this clod of celestial dirt better than we found it.

Electronic Design recently covered the DARPA Lift Challenge (DLC-1.0), where the top two winning designs were electric, outperforming their gas-turbine-powered third- and fourth-place competitors, with nary a piston-powered widget in the running of the full course. A few of the lift challenge competitors could not even start their engines with all that choke in, choke out, and pray stuff...

The first prize Challenge winner was a helicopter powered by a solid-state battery technology from Factorial Energy, estimated to have an energy density of 390 Wh/kg. Second place was a hexacopter powered by an advanced silicon-anode battery from Amprius, also with 290 Wh/kg.

The hexacopter team made some bad decisions as the competition wound down that resulted in thermal structural failures, overheated motors (demagnetizing them), and depleting their scarce/expensive battery resource right before what would have been a first-place run in excess of a 4.0 ratio.

DARPA, having mostly successfully accomplished its goals of spurring innovation toward maximizing lift in a sUAS (drones under 55 lb.) in its Lift Challenge, recently announced a 2028 Lift Challenge competition, (also check out our podcast on the challenge), where the distance traveled is doubled from DLC-1.0, as is the minimum payload weight.

Having had a few weeks to think about the insane performance the new requirements expected from a new crop of sUAS, it may actually not be that bad. By 2028, advanced battery technology may make the lift challenge a bit less formidable than 2026 eyeballs would conclude. So, what’s on the horizon in battery technology?

Specific Energy Is Only Half the Deployment Story

By 2030, advanced batteries likely will not converge around a single dominant chemistry. Engineering requirements seem destined to divide the market among ultra-high-specific-energy cells for aircraft and unmanned systems; manganese-rich lithium-ion for mainstream EVs; lithium-iron-phosphate (LFP) and repurposed vehicle packs for stationary storage; and long-duration flow batteries for transmission-scale grid applications.

Specific energy remains a critical discriminator, but it must be interpreted in context. A 500-Wh/kg cell for a stratospheric UAS, a roughly 300 Wh/kg automotive cell, and a 5- to 15-Wh/kg vanadium-flow system can each be technically appropriate. The decisive question is not “Which battery wins?,” but “Which chemistry and system architecture best satisfy the duty cycle, safety case, cost target, supply chain, and service life?”

Factorial Energy is pushing solid-state cells into aerospace-oriented deployment and public-market financing. Amprius is preparing a 500-Wh/kg silicon-anode cell for unmanned aviation. LG Energy Solution has addressed a key lithium manganese-rich stability issue. GM has elevated LMR over LFP for future EV propulsion. And Hyundai–SK On manufacturing in Georgia shows that large conventional lithium-ion factories remain foundational.

Solid State Reaches Aerospace

Factorial Energy is among the companies moving solid-state batteries from laboratory claims toward early commercial applications. Its FEST lithium-metal cells have been reported at more than 390 Wh/kg in 100+ Ah-class formats. The company’s Solstice all-solid-state roadmap targets up to 450 Wh/kg at the cell level.

Those values exceed the approximately 250- to 330-Wh/kg range generally associated with high-energy automotive lithium-ion cells. Cell-level values must not be confused with installed pack performance, though.

The opportunity is strongest where reduced battery mass has an immediate system-level payoff. In an EV, that could mean greater range, a lighter pack, or better packaging efficiency. In an aircraft or UAS, it can mean more payload, endurance, altitude, reserve energy, or mission equipment. In battery-dominated unmanned aircraft, the battery can constitute a large fraction of takeoff mass, so energy-density gains may alter mission feasibility rather than merely improving a marketing specification.

Factorial’s commercial traction includes an initial aerospace order and a drone-focused commercialization program. Its work with Tulip Tech reportedly showed a 30% range gain in flight testing. The first shipments into the UAS sector, including the Avidrone-related deployment at The Lift Challenge should be regarded as an important field-validation step. They do not, however, demonstrate that automotive-scale solid-state manufacturing is mature. Aerospace and specialty applications can absorb high cell costs and extensive qualification work more readily than high-volume passenger EVs.

By 2030, Factorial’s likely market isn’t every vehicle segment. The nearer fit is premium EVs, defense systems, aviation, robotics, specialty mobility, and unmanned aircraft — applications where the economic value of each kilogram saved is high. These applications require validation of cycle life at usable depth of discharge, fast-charge behavior, cold-temperature output, swelling, mechanical compression requirements, fault response, and delivered pack-level Wh/kg before extrapolating cell specifications into vehicle or aircraft range.

Silicon Anodes Take Flight

Amprius offers a more immediately manufacturable path to high specific energy. Its SiCore 500 lithium-ion cell uses a silicon-anode architecture and is rated at 500 Wh/kg at a continuous 1C discharge rate. The company expects commercial availability in the fourth quarter of 2026, with initial production in Fremont, Calif., and further scaling through manufacturing partners.

The 500-Wh/kg threshold is especially consequential for battery-dominated flight. At that specific energy, a cell stores about 227 Wh/lb before structural housing, interconnects, fuses, thermal materials, and BMS electronics are included. A UAS designer can trade that mass advantage among endurance, payload, sensor capability, operating altitude, and reserve energy.

The aircraft-level benefit will not scale directly with cell-level Wh/kg because drag, propulsor efficiency, flight profile, weather margin, solar augmentation, and allowable depth of discharge all affect delivered endurance.

Amprius claims that its SiCore 500 can be manufactured using conventional lithium-ion production equipment. That assertion may be as commercially relevant as its energy-density figure. Unlike all-solid-state architectures, the company doesn’t require a wholesale replacement of coating, assembly, and formation infrastructure. Amprius stated that cells delivering up to 450 Wh/kg have been commercially available since 2022, and its 2025 annual filing cited access to more than 2 GWh of SiCore production capacity.

Silicon still creates engineering tradeoffs. Silicon undergoes substantial volume changes during lithiation and delithiation, placing stress on electrodes and the solid-electrolyte interphase. High-energy silicon cells therefore need chemistry-aware battery-management limits, carefully selected charge cutoffs, accurate balancing, thermal monitoring, calendar-aging controls, and qualification under the actual mission current profile.

For high-altitude pseudo-satellites, long-endurance UAS, military drones, and payload-sensitive air vehicles, a volume-produced 500-Wh/kg cell could be more disruptive by 2030 than a promising chemistry that lacks a robust manufacturing pathway.

LMR Becomes the EV Bet

Lithium-manganese-rich cathodes, generally abbreviated LMR, are emerging as a potential middle ground between low-cost LFP and high-energy nickel-rich lithium ion. General Motors has described LMR as capable of approaching LFP cost while delivering approximately 33% higher energy density. Exact production-cell Wh/kg figures aren’t yet publicly standardized, but an appropriate engineering planning range is approximately 250 to 330 Wh/kg at cell level, depending on cathode loading, voltage limits, cell form factor, and packaging.

The chemistry’s limiting challenge hasn’t been theoretical capacity — it’s been durability. During charging, LMR cathodes can undergo oxygen-related structural changes that drive gas generation, swelling, impedance growth, and energy loss. Those issues become more serious in large automotive cells, where modest gas evolution can complicate mechanical packaging, thermal design, safety qualification, and long-term warranty performance.

LG Energy Solution and Seoul National University recently reported progress by changing cell operating and formation conditions rather than discarding the cathode concept. According to the reported work, lowering the upper charge cutoff from 4.6 V to 4.3 V improved oxygen recovery from 86% to 97%. Lowering the discharge cutoff from 3.0 V to 2.0 V then restored oxygen recovery closer to the original state. The team also applied lower-temperature formation to suppress gas generation.

The results were demonstrated in a 40-Ah large-format cell, which is considerably more meaningful than a coin-cell result. LG reported 92.2% energy retention after 883 cycles.

That doesn’t end the need for independent validation across duty cycles, cell formats, temperatures, and fast-charge regimes. But it does indicate that LMR is becoming a production-engineering challenge involving formation recipes, voltage management, electrolyte compatibility, cathode consistency, and gas-control repeatability — not merely a materials-science aspiration.

For EV applications, LMR could provide better range and packaging efficiency than LFP while reducing dependence on expensive nickel and cobalt. Usable specific energy, however, will depend on the voltage window and lifetime target. An impressive initial Wh/kg number has little commercial value if it can only be achieved with rapid aging, aggressive swelling, or impractical BMS restrictions.

GM, Ohio, and Georgia

GM’s evolving roadmap illustrates why battery chemistry is becoming application-specific. The company indicated that it may move away from LFP for future passenger EVs and emphasize LMR as its high-volume “workhorse” chemistry. LFP production planned in Tennessee is expected to remain relevant for stationary energy storage, where cost, thermal stability, and cycle life can outweigh the penalty of lower specific energy.

That distinction is technically rational. EVs benefit directly from higher Wh/kg and Wh/L because battery mass affects range, acceleration, payload, platform packaging, and vehicle efficiency. A stationary grid battery can use more mass and volume if it provides low cost, predictable operation, and long service life. GM’s prospective shift should not be interpreted as an industry-wide abandonment of LFP. It’s better understood as using LMR for propulsion applications and retaining LFP for applications where weight is secondary.

GM and LG Energy Solution have targeted U.S. LMR production for around 2028. The cells are expected to use a prismatic format. The years between a laboratory result and a production target are where the crucial work occurs: cathode uniformity, cell formation throughput, yield, gas management, impedance growth, inspection coverage, fast-charge performance, and cold-weather behavior must meet automotive warranty requirements.

GM has also restarted production at the Ultium Cells facility in Warren, Ohio, after a reported seven-month shutdown. The restart doesn’t establish LMR production maturity, but it retains trained labor, manufacturing knowledge, supplier relationships, and regional cell capacity while GM adjusts its EV strategy. In practice, chemistry transitions don’t happen in clean steps. Factories must often manage legacy cells, new designs, variable demand, and policy-driven supply-chain changes at the same time.

In Georgia, Hyundai and SK On began mass production at their joint battery plant serving Hyundai’s Savannah EV operation. The facility is expected to reach 35 GWh per year at full capacity. Public reporting doesn’t provide a verified product-specific Wh/kg figure. As a broad comparison only, current high-energy nickel-rich automotive lithium-ion cells typically fall near 250 to 330 Wh/kg at cell level, with considerably lower values once modules, cooling, protection, buswork, enclosure structure, and BMS electronics are included.

Geely Holding plans to begin pilot deployment of its solid-state battery technology in vehicles across its brand portfolio in 2027, following real-world validation that began in 2026. Its headline target is up to 500 Wh/kg, described in reporting as a battery-pack-level value, versus roughly 250 Wh/kg for Geely’s current liquid-electrolyte “Golden Brick” pack.

If achieved in an automotive-qualified pack, 500 Wh/kg could materially reduce pack mass or enable much longer range. Geely associates the top configuration with more than 1,000 km of vehicle range and a claimed service life of up to 1 million km.

Repurposing and Grid Storage

Repurposed EV batteries don’t represent a new chemistry, but they may become a material source of stationary storage by 2030. Vehicle packs are commonly removed from automotive duty when they retain about 70% to 80% of their original capacity. They may still be suitable for commercial backup, renewable-energy firming, behind-the-meter peak shaving, charging infrastructure, and lower-demand grid services where mass and volume are much less important.

The specific-energy figure for a second-life system is inherited from its original chemistry and reduced by aging. A reasonable effective range for repurposed lithium-ion cells or modules is approximately 70 to 230 Wh/kg, depending on whether the donor pack is LFP, NMC, NCA, or another formulation, and on retained capacity and resistance growth. System-level Wh/kg is often far lower after including racks, enclosures, HVAC, fire suppression, power-conversion systems, and utility interconnection equipment.

Repurposing requires far more engineering than placing used vehicle packs in a container. Developers need serial-number traceability, diagnostic access, state-of-health and state-of-power evaluation, impedance screening, isolation testing, thermal inspection, module matching, BMS interoperability, fault containment, and warranty allocation. Mixed-age and mixed-chemistry fleets can sharply increase integration cost, particularly when modules must be dismantled and redesigned instead of retained in standardized original assemblies.

The potential resource base is substantial. One assessment projects that around 3.4 million EV batteries could retire globally by 2030, representing almost 950 GWh of technically accessible second-life capacity — no, they won’t go into a landfill as popular anti-EV rhetoric seems to wish. The economic value for energy storage is simply too high to throw away, or even, for that matter, to recycle.

The commercially recoverable share will be lower because some batteries will be recycled, unavailable, damaged, geographically dispersed, or too degraded for economical reuse. Nevertheless, second life is likely to become a serious stationary-storage pathway rather than a niche end-of-life option.

New-build grid storage will remain equally important. LFP cells generally offer around 100 to 200 Wh/kg at cell level, a modest value compared with aviation cells but usually acceptable in fixed installations.

Switzerland’s BKW has announced plans for a 400-MW/800-MWh battery installation at the former Mühleberg nuclear-power-plant site, targeting commissioning in the first quarter of 2030. Existing transmission infrastructure is a major advantage: At utility scale, a viable grid connection can be as valuable as the battery hardware itself.

Alpiq has also described a 300-MW/1.2-GWh LFP system at Niedergösgen, associated with hydropower infrastructure and targeting 2029 operation. The four-hour duration indicates a grid asset intended for balancing, renewable integration, arbitrage, capacity support, and ancillary services rather than lightweight energy storage. Such projects demonstrate why LFP can thrive even as automakers look for higher-specific-energy chemistries.

For longer duration, vanadium-redox-flow systems remain relevant. They typically provide only 5 to 15 Wh/kg at system level, far below lithium ion, but can separate power and energy sizing, use aqueous electrolyte, avoid lithium-ion thermal-runaway behavior, and support extensive cycling. Switzerland’s FlexBase concept at Laufenburg has been described as beginning near 1.5 GWh, with potential expansion beyond 2 GWh and power capability approaching 1.2 GW.

By 2030, battery engineering will be defined by specialization. Solid-state and silicon-anode cells will target applications where every kilogram matters. LMR and LMFP will seek a better EV balance among cost, supply security, and specific energy. LFP, second-life packs, and flow batteries will serve stationary storage. The winning design will optimize the whole electrical, mechanical, thermal, and commercial system — not merely advertise the highest Wh/kg figure.