Every long-endurance UAV program eventually runs into the same wall. It isn’t thrust, and it usually isn’t voltage. It’s mass. You can always add more capacity to a pack — the question is whether you can afford the weight that comes with it, and whether that weight quietly cancels out the extra flight time you were trying to buy in the first place.
LiTrue new PE40N-EF is built around that specific problem. It’s a 40Ah anode-free solid-state pouch cell rated at 3.85V nominal, and at 316 grams per cell it delivers 495 Wh/kg — a specific-energy figure that puts it well above the conventional NMC and LFP pouch cells most UAV and electric-aviation programs are still designing around today.
Why anode-free, and why now
Conventional lithium cells carry a graphite (or graphite-silicon) anode whose job is mostly to host lithium ions during cycling — useful for cycle life, but dead weight from an energy-density standpoint. An anode-free solid-state design removes that host layer entirely, plating lithium directly at the current collector during charge. Less inert material per cell means more of the cell’s mass and volume is doing actual energy-storage work.
The trade-off is a real one, and LiTrue doesn’t hide it: anode-free chemistry currently trades cycle life for energy density. The PE40N-EF is rated for 200–600 cycles, not the 2,000+ you’d expect from a standard NMC pouch cell. For a fixed-wing survey drone that flies a mission and comes home, that’s a fair trade. For a platform cycling daily like a delivery workhorse, it isn’t — and LiTrue own product literature is upfront that this cell is built for the first use case, not the second.
What the numbers actually mean in the air
A 40Ah cell at 495 Wh/kg is one thing on a datasheet. What matters to a pack engineer is what it does to mission time and thermal margin.
At 0.5C continuous charge, that’s 20A into the pack — a controlled, conservative charge rate consistent with a chemistry that prioritizes energy density over fast turnaround.
At 3C continuous discharge, that’s 120A sustained — enough headroom for climb and cruise on most UAV powertrains.
At 5C pulse discharge, that’s 200A — the kind of margin that matters during takeoff, a sudden climb, or a wind-gust correction, without asking the BMS to trip.
None of that changes because the anode is gone. The pulse and continuous ratings are sized the same way LiTrue rates any high-density cell: for what the pack can actually sustain, not a marketing ceiling.
Built for the cold, not just the lab
The PE40N-EF is rated across -43°C to 55°C operating temperature — a range aimed squarely at high-altitude platforms and cold-region operations, where standard lithium cells lose usable capacity fast as the mercury drops. For programs flying survey or ISR missions at altitude or in winter conditions, that low-temperature floor is often as important as the energy density headline number.
Full Product Specifications — PE40N-EF
FieldValueModel NumberPE40N-EFSeriesAnode-FreeCell StructurePouchNominal Capacity40.0 AhNominal Voltage3.85 VCell Weight316 gEnergy Density495 Wh/kgMax. Continuous Charge Rate0.5CMax. Continuous Discharge Rate3CMax. Pulse Charge Rate1CMax. Pulse Discharge Rate5CCycle Life200–600 timesOperating Temperature-43°C to 55°CDimensions (T×W×H)5.4 × 74 × 172 mmDesign StandardsGB/T 38058-2019, GB 31241-2022Certification StandardsUN38.3, RoHSSample MOQ10 pcs (negotiable)Sample Lead Time7–15 working daysBulk Lead Time45 days (subject to volume & requirements)
Source: LiTrue product page, PE40N-EF
Where this cell fits
Long-endurance UAVs: every 100g saved per string translates directly into extra loiter or range at a fixed takeoff weight — 495 Wh/kg is the lever for that trade.
High-altitude platforms: the -43°C low-temperature rating keeps output from collapsing at altitude, where standard cells struggle.
Electric aviation prototypes: 3C continuous / 5C pulse discharge gives enough margin for takeoff, climb, and transient bench testing without over-provisioning the pack.
Portable mission power: 40Ah in a 316g cell matters anywhere carried weight limits operating time — field comms, portable sensor rigs, backpack power.
Custom pack development: as a base cell, PE40N-EF is a candidate for LiTrue custom battery pack program when specific energy is the primary spec, not an afterthought.
The honest caveat
This is not a general-purpose cell, and it isn’t meant to be. If your application cycles daily or needs thousands of charge cycles over its service life, a standard NMC or LFP pouch cell from LiTrue broader cell lineup is still the right call. The PE40N-EF earns its place specifically in mass-constrained, mission-based flight profiles where the extra Wh/kg buys real, usable endurance and 200–600 cycles is more than enough over the platform’s service life.
Getting samples
Sample quantities ship in as little as 10 pieces with a 7–15 working day lead time, and LiTrue engineering team can support series-parallel configuration and pack-level integration for programs moving from cell evaluation to a finished pack. Reach out through LiTrue contact page to scope a project or request a factory quote.
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