Sodium-ion starter batteries
Power without compromise
A sodium-ion battery that drops straight into your existing battery tray, in the same size and with the same terminals. Starts in the cold, lasts five to eight years, and never needs topping up or charging over winter.
- Cycle life
- 2,000 to 3,000
- Output at -20°C
- Over 90%
- Service life
- 5 to 8 years
- Weight vs lead-acid
- 40 to 50% lighter
- Maintenance
- None
Same case, same terminals
Every Nacore battery is built to the case dimensions of the lead-acid battery it replaces, with the terminals in the same positions and the same polarity.
It sits in the existing tray, the existing strap holds it, and the existing leads reach. Nothing about the installation changes except the weight in your hand.
Why sodium-ion
Sodium-ion holds up where lead-acid struggles: cold mornings, stop-start city driving, and long stretches of standing unused.
Over 90% capacity at -20°C
Worry-free cold cranking
Retains over 90% of its capacity at -20°C (-4°F), so the engine turns over reliably even in severe winter conditions.
2,000 to 3,000 cycles
Superior lifecycle value
Five to six times the cycle life of a lead-acid battery, giving a service life of five to eight years on a single installation. One battery instead of three.
Starts after a year in storage
True maintenance-free operation
Exceptional shelf-life stability. It starts normally even after a year unused, so there is no dead battery from self-discharge and nothing to maintain.
Millisecond-level response
Rapid charge and high response
Engineered for high-frequency start-stop cycling with fast voltage recovery, which keeps automatic start-stop systems responsive rather than sluggish.
40 to 50% lighter
Significant weight reduction
40 to 50% lighter and around 30% smaller than an equivalent lead-acid battery, which frees up weight and space without changing the fitment.
Motorcycle batteries
Three sizes covering the most common motorcycle fitments. Find the code printed on your current battery in the second column, and the Nacore part number to order is in the first.
| Order this | If your battery is | Cranking amps | Energy | Dimensions |
|---|---|---|---|---|
| YTX14-Na | YTX14-BS 12V 14Ah | 210 CCA | 108 Wh | 159 × 86 × 149 mm 6.3 × 3.4 × 5.9 in |
| YTX12-Na | YTX12-BS 12V 12Ah | 210 CCA | 108 Wh | 159 × 86 × 131 mm 6.3 × 3.4 × 5.2 in |
| YTX9-Na | YTX9-BS 12V 9Ah | 210 CCA | 108 Wh | 159 × 86 × 105 mm 6.3 × 3.4 × 4.1 in |
Scroll the table sideways to see all columns.
- Dimensions are length × width × height.
- Sealed maintenance-free lead-acid batteries carry the -BS suffix, for example YTX9-BS. Order the same base code with Na on the end.
- Cranking amps are cold cranking amps (CCA), measured to the standard test at -18°C (0°F), so they compare directly with the CCA figure printed on a lead-acid label.
- If the code on your battery does not appear here, send us a photo of the label and we will confirm which size fits.
Car batteries
Five sizes covering the most common fitments. Read the group number off the label on your current battery, find it in the second column, and order the Nacore part number beside it.
| Order this | If your battery is | Cranking amps | Energy | Dimensions |
|---|---|---|---|---|
| 47-Na | Group 47 H5 · LN2 12V 60Ah | 700 CCA | 418 Wh | 242 × 175 × 190 mm 9.5 × 6.9 × 7.5 in |
| 48-Na | Group 48 H6 · LN3 12V 70Ah | 800 CCA | 660 Wh | 278 × 175 × 190 mm 10.9 × 6.9 × 7.5 in |
| 94R-Na | Group 94R H7 · LN4 12V 80Ah | 850 CCA | 820 Wh | 315 × 175 × 190 mm 12.4 × 6.9 × 7.5 in |
| 49-Na | Group 49 H8 · LN5 12V 92Ah | 900 CCA | 880 Wh | 353 × 175 × 190 mm 13.9 × 6.9 × 7.5 in |
| 95R-Na | Group 95R H9 · LN6 12V 105Ah | 1,000 CCA | 1,025 Wh | 394 × 175 × 190 mm 15.5 × 6.9 × 7.5 in |
Scroll the table sideways to see all columns.
- Dimensions are length × width × height.
- Group numbers are the US standard. If your label shows a DIN code (H5 to H9) or an EN code (LN2 to LN6) instead, those are listed under the group number in the second column.
- Cranking amps are cold cranking amps (CCA), measured to the standard test at -18°C (0°F).
- Charge temperature -20°C to 75°C. Discharge temperature -40°C to 75°C.
- IP66 enclosure. Built-in battery management with over-current, over-voltage and short-circuit protection.
- Full specification sheets are available on request.
Why the watt-hours look lower than your old battery
The most common question we get, and the answer is that a starter battery is not judged on how much energy it stores.
Starting an engine takes one short, very large burst of current. It uses only a few percent of a battery's stored energy. What decides whether your engine turns over is how much current the battery can push out at once, not how many watt-hours it holds.
Lead-acid is poor at delivering high current. Its voltage sags badly under load and it cannot be run far down without damage, so it has to be built much larger than the starting job needs. Sodium-ion has far lower internal resistance and delivers its full rated current with very little voltage drop, so the same cranking performance fits in a smaller, lighter package.
The trade-off worth knowing: with less energy held in reserve, running headlights or a stereo for a long stretch with the engine off will draw the battery down sooner than a lead-acid battery would. For starting, which is what these are built for, the lower figure is not a compromise.
Which one do I need
Every Nacore part number is the code already printed on the battery you are replacing, with Na on the end. There is nothing new to look up.
Motorcycles and ATVs
Read the code off the top or side of your battery, then add Na. A YTX9-BS becomes YTX9-Na. The case size and terminal positions match the original.
Cars
Read the group number off the label, then add Na. A Group 48 becomes 48-Na. If the label shows H6 or LN3 instead, that is the same size as Group 48.
Not sure
Send us a photo of the label on your current battery, or just tell us the make, model and year of your vehicle. We will confirm the right one before you order.
Will it work with my charging system
Yes. Nacore batteries run on a standard 12V vehicle charging system with no modification and no separate charger. The operating range is 8 to 15.4 V, which covers normal alternator output on cars and motorcycles alike.