12V Sodium-Ion Batteries
The StamiNa+ 12V range brings safe, sustainable sodium-ion battery power to solar, off-grid, telecom, backup and leisure systems. Led by the NA12100 100Ah flagship, these maintenance-free, drop-in batteries perform in extreme cold and use no cobalt, nickel or scarce lithium — a cleaner alternative to lead-acid and lithium.
AceOn's 12V sodium-ion range is built for real-world energy storage — drop-in batteries that replace lead-acid and lithium in solar, backup, telecom and leisure systems without the supply, safety or cold-weather compromises.
Every battery runs on sodium-ion chemistry: safe under abuse, cobalt and lithium-free, and dependable in freezing conditions. The range is anchored by the NA12100 100Ah flagship, with further capacities joining as the line grows. It sits alongside our bespoke StamiNa+ soft packs for OEM applications.
Backed by 30+ years of UK battery expertise, every unit ships with the technical support to specify and integrate it correctly.
Drop-In 12V
Replaces lead-acid and lithium in standard 12V systems.
Wide Temperature
Discharges to −30°C and charges in the cold without heaters.
Smart BMS
Built-in protection and automatic cell balancing.
Inherently Safe
No fire or explosion through overcharge and short-circuit testing.
Maintenance-Free
Automatic balancing keeps the pack in tune — fit and forget.
Sustainable
Cobalt, nickel and lithium-free — a cleaner supply chain.
AceOn NA12100
A maintenance-free, drop-in 12-volt energy block built on safe, abundant sodium-ion chemistry — engineered for solar, backup, telecom and off-grid power in the world's most demanding climates.
- 2,000+ cycle life (≥70%)
- −30°C to +60°C discharge
- Smart BMS built in
- Sealed ABS case & carry handle
NA12100 Technical Specifications
Complete specifications for the 12V 100Ah flagship of the StamiNa+ sodium-ion range.
| Electrical | |
| Product model | RSIB-MSI-1201 |
| Nominal voltage | 12 V DC |
| Nominal capacity | 100 Ah |
| Nominal energy | 1.2 kWh (1200 Wh) |
| Cell configuration | 32140 · 4S10P |
| Charge cut-off voltage | 15.8 V |
| Discharge cut-off voltage | 8 V |
| Internal resistance | ≤ 6 mΩ |
| Max. charge current | 50 A |
| Max. discharge current | 100 A |
| Cycle life | ≥ 2000 cycles · ≥ 70% |
| Temperature | |
| Operating temperature · charge | −10 to +55 °C |
| Operating temperature · discharge | −30 to +60 °C |
| Low-temperature charging | Supported to −10 °C |
| Physical & Protection | |
| Dimensions (L × W × H) | 355 × 175 × 188 mm |
| Net weight | 14 kg |
| Enclosure | Sealed ABS · carry handle · M8 studs |
| Battery management | Smart BMS · balancing & protection |
Specifications are typical values and subject to change without notice. Confirm final specification with AceOn before order.
Protected, Proven, Cold-Ready
An integrated smart BMS and sodium-ion chemistry that's been tested where it matters.
Smart BMS Built In
Manages charge, discharge, cell balancing and protection — guarding against over-charge, over-discharge, over-current and short circuit, with temperature protection on a common port.
Abuse-Tested Safe
Through over-charge, over-discharge and short-circuit testing the NA12100 shows no fire and no explosion — the inherent safety advantage of sodium-ion over lithium.
Cold-Climate Ready
Discharges down to −30°C and supports low-temperature charging to −10°C — keeping power flowing through winter where lithium systems stall.
Charging profile by temperature
Power for Every 12V System
Wherever you'd fit a 12V lead-acid or lithium battery, StamiNa+ sodium-ion delivers safer, cold-tolerant power.
Solar & Off-Grid Storage
Cabins, workshops and remote sites that need year-round, cold-tolerant storage.
Backup Power & UPS
Dependable standby energy for critical equipment when the grid drops.
Telecom
Safe, reliable backup for cell sites and comms in any climate.
Leisure & Marine
Caravans, campervans and boats — safe chemistry and steady output.
Security & CCTV
Cameras, monitoring and remote security with all-weather reliability.
Cold-Climate & Outdoor
Outdoor installations where lithium can't charge and lead-acid fades.
The 12V range is growing
The NA12100 is the first of a growing 12V StamiNa+ line-up. More capacities and form factors are on the way — and if you need a specific size, voltage or volume now, our UK team can advise on what's available and what's coming.
12V Sodium-Ion Questions
What installers and buyers ask most about switching a 12V system to sodium-ion.
Is the NA12100 a drop-in replacement for lead-acid or lithium?
Yes — it's a 12V drop-in block sized for solar, backup, telecom and leisure systems. Because sodium-ion is slightly larger for the same capacity, we'll confirm the fit for your space, load and charging setup before you order.
Can I use my existing charger and inverter?
The NA12100 works with standard 12V systems, but it should be charged with a sodium-ion-appropriate charge profile (15.8V cut-off). Many modern chargers and inverter-chargers can be set to suit — tell us your equipment and we'll confirm compatibility.
How well does it perform in the cold?
Exceptionally. It discharges down to −30°C and supports low-temperature charging to −10°C, so it keeps working through winter where lithium systems stop charging and lead-acid capacity collapses.
How long will it last?
The NA12100 delivers 2,000+ full charge cycles while retaining at least 70% capacity. For typical solar, backup and off-grid duty cycles, that's many years of dependable, maintenance-free service.
Is it safe to store and transport?
Sodium-ion has a much lower thermal-runaway risk than lithium and passes abuse testing with no fire or explosion. For storage over 30 days, set it to around 60% charge — and never let it sit fully depleted.
Will the 12V range expand beyond 100Ah?
Yes. The NA12100 is the flagship of a growing 12V StamiNa+ range, with further capacities planned. If you need a different size or volume, get in touch and we'll advise on current and upcoming options.
Switch to 12V Sodium-Ion
Tell us about your solar, backup, telecom or leisure system and our UK team will help you specify the right StamiNa+ 12V battery — and confirm the perfect fit.