Next-Gen Energy Storage
Sodium-Ion.
Coming Soon.
Next-generation sodium-ion cells for extreme cold and safe zero-volt storage — now open for pilot partnerships.
Technical
Specifications
- Chemistry
- Sodium-ion (Na-ion)
- Cell formats
- 32140 / 46145 cylindrical
- Low-temp retention
- > 80% @ −40 °C
- Storage
- Safe at 0 V
- Cycle life
- target ≥ 3,000 cycles
- Nominal voltage
- ≈ 3.1 V
- Materials
- Low-cost, abundant — cobalt/lithium-free
- Status
- Sampling · pilot 2026
Where it fits
Applications
Cold-Climate Storage
Retains capacity where Li-ion fades below freezing.
Grid & Home ESS
Long-cycle, low-cost stationary energy storage.
Safe Transport
Ships at 0 V — dramatically lower hazard class.
Entry-Level Mobility
Cost-driven light-EV and e-bike packs.
What's next
Roadmap to Production
- 01
Sampling
Engineering samples for evaluation.
- 02
Co-Development
Joint cell-to-pack design.
- 03
Pilot Production
Small-batch pilot line.
- 04
Mass Production
Targeted 2026 and beyond.
Questions
FAQ
When can I get samples?
We're onboarding pilot partners now. Pre-book a technical discussion and we'll align on sample timing and specs.
Why sodium-ion over lithium?
Better low-temperature performance, safer 0 V storage and transport, and lower material cost — ideal for cold climates and stationary storage.
What formats are available?
Initial focus is 32140 and 46145 cylindrical cells, with pack-integration support.
Is the −40 °C figure real-world?
Our target is > 80% capacity retention at −40 °C; final numbers are shared under pilot evaluation.
More from MiO
Explore other lines
Flagship · Heavy Load
Power Pack
Custom battery packs for cordless power tools — engineered for shock, heat and zero throttling under sustained load.
View detailsHigh-Rate · Instant Burst
Drone Battery
High-C pouch-cell packs for UAVs — explosive instantaneous power with smart BMS telemetry over CAN / I²C.
View detailsPrecision Space · Small-Format
Ultra-Thin
Small-format custom pouch cells, coded thickness × width × length in mm — hundreds of stock sizes, or built to your exact dimensions.
View details© 2026 MiO · Custom Battery Manufacturing