Sodium-ion chemistry
Sodium battery technology for vehicle start-stop systems, positioned as the next step beyond lead-acid.
DTZ5S · 20.4 Wh
DWG DS-001 · Dura Start Battery (Thailand) Co., Ltd.
We develop battery management systems, battery packs and sodium battery materials for vehicle start-stop systems. Every number on this page comes from an approved data sheet.

Sheet 01 / Technology
Company-level technology positioning, kept separate from model specifications. Where a number appears, it is the DTZ5S value.
Sodium battery technology for vehicle start-stop systems, positioned as the next step beyond lead-acid.
DTZ5S · 20.4 Wh
Designed for the short, intense current a motorcycle start demands.
DTZ5S · 70C ≤2s @25°C
Discharge, thermal, fault and communication management on board.
See sheet 03
A compact ABS case sized for motorcycle battery bays.
DTZ5S · 454 g
Sealed case with certification marks shown on the model data sheet.
DTZ5S · IP67
Sheet 02 / Product
Reproduced from the DuraStart DTZ5S data sheet, with every condition kept.
| Electrical characteristics | |
|---|---|
| Nominal voltage | 12V |
| Nominal capacity | 1700mAh |
| Energy | 20.4 Wh |
| Internal resistance | ≤ 35mΩ |
| Cycle life | >3000 cycles @80% DOD |
| Self-discharge | ≤5% /month @25°C |
| Charge | |
| Charge voltage | 14.8V ±0.2V |
| Charge current | 0.5C @15–45°C 0.2C @10–15°C 0.1C @0–10°C |
| Max. charge current | 5C @25°C |
| Charge mode | 0.5C CC to 14.8V, then 14.8V CV, charge current to 0.05C (CC/CV) @15–40°C |
| Discharge | |
| Discharge cut-off voltage | 6V |
| Discharge current (recomm.) | 0.5C @25°C |
| Max. continuous discharge current | 40C @0–45°C |
| Instant discharge current | 70C (≤2s) @25°C |
| Environmental | |
| Charge operating temperature | 0–45°C |
| Discharge operating temperature | −40°C – 60°C |
| Humidity | 60 ±25% RH |
| IP rating | IP67 |
| Mechanical | |
| Plastic case | ABS |
| Dimensions | 113 × 69 × 86 mm ±2 mm |
| Weight | 454 g (0.45 kg) |
Sheet 03 / BMS & Safety
Every Dura Start battery pairs sodium-ion cells with a battery management system that monitors, estimates and protects.
BMS functions from the Dura Start company profile; protection list from client BMS artwork. Copy pending client approval.
Sheet 04 / Range
DTZ5S is fully specified. Further models will be published as their data sheets are approved.
Sheet 05 / Company
Dura Start Battery (Thailand) Co., Ltd. is a high-tech company specialising in sodium battery technology for vehicle start-stop systems, serving Thailand and the wider Southeast Asian market.
To drive a cleaner automotive future where every journey begins with sustainable, abundant energy.
To lead the future of motorcycle energy in Thailand, becoming the national standard for high-performance start-stop power.
Replacing conventional lead-acid starter batteries with sodium-ion reduces reliance on lead in everyday vehicles.
Marks · as shown on the DTZ5S data sheet
Sheet 06 / Partnerships
Distributors, dealers, workshops, fleet operators and motorcycle-industry partners: tell us about your business and we will get back to you.