Are Hitachi’s Tri-Mode Trains Exceeding Expectations?
I asked Google AI, the question in the title of this post and received this answer.
Yes, Hitachi’s tri-mode (battery-hybrid) trains are exceeding expectations, particularly following successful trials in the UK in late 2024. Trials of the battery-equipped Class 802/2 demonstrated superior performance to initial forecasts, leading to a £300 million order for a new fleet to be delivered in 2028.
Key findings from trials and operational expectations:
Performance Exceeded: The trial, conducted with TransPennine Express and Angel Trains, showed fuel cost savings of 35%–50%, surpassing initial predictions of up to 30%.
Operational Capability: The battery technology enabled trains to reach speeds greater than 75 mph and provided enough range for zero-emission, silent running in and out of stations, significantly reducing noise and improving air quality.
Energy Efficiency: The battery matched the weight of a diesel engine, meaning no extra track degradation.
Future Impact: The success of the trial led to an order from Arriva Group for a new fleet for Grand Central services, which will increase seating capacity by 20% and are expected to significantly reduce carbon emissions.
These trains, designed to run on electric, battery, or diesel power, are part of a push to modernize rail services, with the technology allowing for the gradual elimination of diesel-only operation on certain routes.
That is certainly good performance and Hitachi received a £300 million order, which I wrote about in Arriva Group Invests In New Battery Hybrid Train Fleet In Boost To UK Rail Industry
But I don’t think it’s all down to Hitachi, as Hitachi linked up with Sunderland-based Hyperdrive Innovation, who are JCB’s battery supplier. Hyperdrive were taken over by Turntide Technologies in 2021.
In Batteries Ordered For Grand Central Inter-City Trains, I said this.
Hitachi Rail has selected Turntide Technologies to supply lithium iron phosphate batteries for use on electric-diesel-battery hybrid inter-city trainsets it is to build for Arriva’s open access operator Grand Central.
I am coming to the conclusion, that Turntide Technologies use and/or make some very special batteries.
I asked Google AI, “Which make of battery cells does Turntide use?” and received this reply.
Based on recent announcements (2023–2025), Turntide Technologies utilizes advanced Lithium Iron Phosphate (LFP) cells for its next-generation battery systems, particularly for its partnership with Hitachi Rail.
Key details regarding Turntide’s battery cell usage include:
Chemistry Shift:
While previously associated with Nickel-Manganese-Cobalt (NMC) in some applications, Turntide has focused its recent rail projects with Hitachi on LFP technology to enhance safety and allow for more compact, powerful, and lighter battery packs.
Application:
These LFP batteries are used in high-performance, rugged, and space-limited environments, such as Hitachi’s UK battery-operated trains.
Modular Design:
Turntide’s Gen 5 battery systems are designed to be flexible for various applications including construction, agriculture, and mining, using modular, high-energy-density cells.
Previous Technology:
Previously, Turntide (which acquired Hyperdrive Innovation) used Lithium-ion NMC cells for its battery packs.
The search results do not explicitly identify a specific, named manufacturer (e.g., CATL, LG, Samsung) for the cells, but focus on the LFP chemistry utilized by Turntide.
I am also coming to the conclusion, that they took over Hyperdrive Innovation to get control of these compact, powerful, and lighter battery packs.
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