JIS Battery Standard: JIS Battery Sizes, Codes, and Model Guide
The JIS (Japanese Industrial Standard) battery standard, defined by JIS D 5301, is the dominant lead-acid battery specification across Asia, Africa, the Middle East, and Oceania. It is the naming and dimensional system behind the world’s highest-volume automotive battery sizes — including the 65D26, which powers millions of Japanese-brand sedans and SUVs worldwide.
Chengguang Power Tech manufactures 7 JIS models, from the 45 Ah 55B24 to the 200 Ah 190H52. This page explains the JIS code system, the mounting hardware, and how to read a JIS model number.
Key Takeaways
- Code — JIS code = performance class + size class (65D26 = 65 class, D-series width, 26 length code).
- Mounting — B00 top-frame clamp + T1 posts — fundamentally different from DIN B13 bottom rail.
- Range — 7 models from 55B24 (45 Ah) to 190H52 (200 Ah).
- CCA note — JIS CCA (D 5301, −15 °C) uses a different test point from SAE (−18 °C), so the two numbers are not directly convertible.
Reading a JIS Model Number
A JIS code like 65D26 encodes three pieces of information:
| Position | Meaning | Example (65D26) |
|---|---|---|
| 1–2 (numeric) | Performance class — capacity/CCA tier (higher = more power) | 65 |
| 3 (letter) | Case width class — B (narrow ~129 mm), D (wide ~173 mm), E (extra-wide ~176 mm), G/H (heavy duty) | D |
| 4–5 (numeric) | Approximate case length in centimetres | 26 (≈260 mm) |
So 65D26 = 65-class performance, D-series width, 26 cm length. 55B24 = 55-class, B-series narrow frame, 24 cm length. 190H52 = 190-class, H-series heavy-duty frame, 52 cm length.
The same physical case often carries multiple regional names. The 65D26 is sold as NS70 in Southeast Asia/Australia, N50 in the Middle East/Africa, and 55D26 as an economy variant — all the same 260 × 173 mm footprint. Verify the Ah and CCA on the label; a name alone does not fix the electrical spec.
JIS Mounting Hardware
JIS batteries use a distinctive mounting system that does not interchange with DIN or BCI:
| Attribute | JIS Specification |
|---|---|
| Terminal | T1 post — small post (cars) or large post (heavy duty) |
| Hold-down | B00 (top frame clamp) |
| Polarity | Type [0] — left negative (−), right positive (+) |
| Standard document | JIS D 5301 |
| Test reference | CCA at −15 °C (differs from SAE −18 °C) |
A JIS B00 hold-down is a metal frame clamped across the battery top — fundamentally different from the DIN B13 bottom-rail lip. When replacing a battery, confirm the tray uses a top-frame clamp before assuming a JIS unit will fit.
The Chengguang JIS Range: 7 Models
| Model | Also Known As | Type | C20 (Ah) | CCA (SAE) | Dimensions (mm) | Terminal | Weight (kg) |
|—|—|—:|—:|—|—|—:|
| 55B24 | N45, N40 | SLI | 45 | 370 | 238 × 129 × 202–227 | T1 small | 11–14 |
| 55D23 | 75D23 | SLI | 60 | 500 | 232 × 173 × 202–225 | T1 small | 13–16 |
| 65D26 | 55D26, NS70, N50, N50Z | SLI | 55–70 | 450–580 | 260 × 173 × 202–225 | T1 small | 14–18 |
| 95E41 | W105, N100 | SLI | 100 | 750 | 410 × 176 × 213–233 | T1 small | 22–26 |
| 105D31 | 95D31, 65D31, N90, N80, N70 | SLI | 90 | 650 | 306 × 173 × 202–225 | T1 small | 19–23 |
| 145G51 | N150 | Heavy Duty | 120–135 | 800–900 | 508 × 222 × 212–240 | T1 large | 30–38 |
| 190H52 | N200 | Heavy Duty | 200 | 1,100 | 521 × 278 × 220–270 | T1 large | 45–55 |
Application Mapping
| Vehicle Type | Recommended JIS Models |
|---|---|
| Compact car / hatchback | 55B24 |
| Mid-size sedan | 55D23, 65D26 |
| Large sedan / SUV | 65D26, 95E41, 105D31 |
| Pickup / light truck | 105D31 |
| Medium truck / bus | 145G51 |
| Heavy truck / equipment | 190H52 |
Regional Demand
| Region | Primary Standard | Top JIS Models |
|---|---|---|
| Southeast Asia | JIS | 55B24, 55D23, 65D26 |
| Africa | JIS + DIN | 65D26, 95E41, 105D31 |
| Middle East | JIS + DIN | 65D26, 105D31 |
| Australia / Oceania | JIS (AS) | 65D26, 105D31 |
Buying Considerations
- Width class first. B-series (129 mm) and D-series (173 mm) trays are not interchangeable. Measure the tray width — 130 mm points to 55B24; 175 mm opens the D-series.
- Performance tier maps to CCA. The leading digits are a power class, not a capacity guarantee. The 105D31/95D31/65D31 share one case but differ in Ah (90/80/65). Confirm the label rating.
- Heavy duty is a different animal. 145G51 and 190H52 use thick Pb-Sb plates, deep-sump cases, and T1 large posts. They will not fit a passenger car tray (30–55 kg).
- JIS CCA ≠ SAE CCA. JIS D 5301 rates CCA at −15 °C versus SAE −18 °C — different test procedures with no universal percentage conversion. Chengguang spec sheets quote SAE J537 CCA to keep comparisons consistent.
Testing & Quality Control
JIS batteries are tested to JIS D 5301 with a 100% gate on every unit:
| Test | Estándar | Coverage |
|---|---|---|
| CCA | SAE J537 at −18 °C (cross-referenced) | 100% |
| Open-circuit voltage | >12.60 V after formation | 100% |
| Visual / polarity / hold-down | JIS D 5301 | 100% |
| C20 capacity | IEC 60095-1 | Batch |
| Vibration | JIS D 5301, 3g RMS / 8 h | Batch |
JIS Manufacturing Notes
Chengguang’s JIS line splits by duty class, not just by case size:
| Duty Class | Grid Alloy | Plate Design | Models |
|---|---|---|---|
| SLI (passenger) | Pb-Ca (calcium) | Thin plates, high surface area for CCA | 55B24, 55D23, 65D26, 95E41, 105D31 |
| Heavy duty (commercial) | Pb-Sb (antimony) | Thick plates, deep-sump case, high RC | 145G51, 190H52 |
Calcium grids cut self-discharge and water loss (the SLI requirement); antimony grids survive deep cycling and vibration (the truck/bus requirement). The same 65D26 case can be built to 55, 65, or 70 Ah by varying plate count and paste density — which is why the label Ah, not the case name, is the purchase specification.
JIS Performance Classes Decoded
The leading digits of a JIS code are a performance class — a rough capacity band, not an exact Ah. The size letter and final digits then fix the case:
| Performance Class | Typical Capacity | Example Models | Vehicle Class |
|---|---|---|---|
| 50–55 | 45–60 Ah | 55B24, 55D23 | Compact cars |
| 65–75 | 65–75 Ah | 65D26, 75D23 | Mid-to-large sedans, SUVs |
| 95–105 | 90–100 Ah | 95E41, 105D31 | Large SUVs, pickups |
| 145+ | 120+ Ah | 145G51, 190H52 | Trucks, buses, equipment |
The width class letter is the first fitment decision: B-series (129 mm) for compact trays, D-series (173 mm) for the standard sedan/SUV tray, and E/G/H-series (176–278 mm) for large and heavy-duty cases.
CCA by Engine Class — JIS Model Fit
| Engine | Typical CCA (SAE) | JIS Model |
|---|---|---|
| 4-cyl gasoline 1.3–2.0 L | 370–500 | 55B24, 55D23 |
| V6 gasoline 2.5–3.5 L | 500–650 | 65D26, 105D31 |
| V8 gasoline >4.0 L | 650–850 | 95E41, 105D31 |
| 4-cyl diesel 2.0–3.0 L | 550–750 | 65D26, 95E41 |
| V6/V8 diesel >3.0 L | 750–1,100 | 145G51, 190H52 |
Climate adjustment: add ~20% CCA for sustained −20 °C operation; subtract ~10% for markets that never freeze. A 65D26 in Siberia is not the same sizing decision as a 65D26 in Dubai.
JIS CCA Conversion
JIS D 5301 rates CCA at −15 °C, while SAE uses −18 °C — so the same battery carries different numbers depending on the standard on the label:
| Estándar | Test Temp | Test Basis |
|---|---|---|
| SAE J537 | −18 °C | Chengguang catalog reference |
| IEC 60095-1 | −18 °C | Closely aligned with SAE |
| EN 50342-1 | −18 °C | Different pass criteria |
| DIN 43539 | −18 °C | Legacy German method |
| JIS D 5301 | −15 °C | Warmer test point |
This is why a “650 CCA” label must be read against its standard. Chengguang spec sheets quote SAE J537 CCA across the catalog so comparisons stay consistent — verify which standard is printed on any competitor’s label before comparing numbers.
JIS ↔ DIN Cross-Reference
For cross-market sourcing, the closest Chengguang DIN equivalents to the JIS range (dimensional approximations — always verify hold-down and terminals):
| JIS Model | DIN Equivalent | JIS Dimensions (mm) | DIN Dimensions (mm) | Fit Match |
|---|---|---|---|---|
| 65D26 | 56638 (DIN66) | 260 × 173 × 202–225 | 278 × 175 × 175–190 | Verify |
| 105D31 | 58043 (DIN80) | 306 × 173 × 202–225 | 315 × 175 × 175–190 | Verify |
| 95E41 | 58827 (DIN88) | 410 × 176 × 213–233 | 353 × 175 × 175–190 | Different |
| 145G51 | 60038 (DIN100) | 508 × 222 × 212–240 | 393 × 175 × 175–190 | Different |
The recurring caveat: a B00 top-frame JIS battery and a B13 bottom-rail DIN battery of similar dimensions will not interchange without an adapter. Hold-down is the first check, not the Ah number.
JIS D 5301 — What the Standard Actually Tests
JIS D 5301 is the governing document for Japanese automotive batteries. Beyond CCA, it prescribes the tests a JIS battery must pass:
| Test | What It Checks | Typical Requirement |
|---|---|---|
| Cold-cranking (CCA) | Cranking amps at −15 °C | Model-specific rating |
| High-rate discharge | Sustained high current without voltage collapse | Voltage above threshold for duration |
| Charge acceptance | How fast the battery re-absorbs charge | Current at set voltage |
| Vibration | Survival under vehicle shaking | 3g RMS / 8 h |
| Water consumption | Electrolyte loss over life | Low loss (Ca-Ca grids) |
Chengguang tests every JIS unit to JIS D 5301 and cross-references CCA to SAE J537 (−18 °C) so spec-sheet comparisons stay consistent across standards.
JIS vs DIN vs BCI — At a Glance
| Attribute | JIS | DIN | BCI |
|---|---|---|---|
| Code format | Performance + size (65D26) | 5-digit numeric (56638) | Group number (Group 48) |
| Hold-down | B00 top-frame clamp | B13 bottom-rail lip | Bracket/top clamp |
| Terminal | T1 post (small/large) | Standard post (∅19.5/17.9) | Side or top post |
| CCA test | −15 °C (D 5301) | −18 °C (DIN 43539 / EN) | −18 °C (SAE J537) |
| Primary markets | Asia, Africa, Middle East, Oceania | Europe + European aftermarket | América del Norte |
Chengguang manufactures JIS and DIN and cross-references BCI. The hold-down and terminal type — not the Ah rating — are what decide interchangeability.
Preguntas frecuentes
Is NS70 the same as 65D26? Yes — the same physical battery. NS70 is the Southeast Asia/Australia naming, N50 is the Middle East/Africa naming, and 55D26 is the economy variant of the same 260 × 173 mm case.
Can I upgrade from 55B24 to 65D26? Only if the tray fits — the 65D26 is 22 mm longer and 44 mm wider than the 55B24. Measure before buying.
What does the “D” in 65D26 mean? The D-series width class (173 mm). B-series is 129 mm. Width class is the first fitment decision.
Why does the same case have different Ah ratings? The 65D26 case can be built to 55, 65, or 70 Ah by varying plate count and paste density — the label Ah, not the case name, is the purchase specification.
What is the difference between JIS and SAE CCA? JIS D 5301 tests at −15 °C versus SAE’s −18 °C — different test procedures, so the two numbers are not directly convertible. Chengguang quotes SAE J537 CCA for consistent comparison.
Related Articles
- 55B24 Battery
- 55D23 Battery
- 65D26 Battery
- 95E41 Battery
- 105D31 Battery
- 145G51 Battery
- 190H52 Battery
- DIN Battery Standard Guide
- SLI Starting Battery Guide
- JIS Standard — Technical Reference
- All 14 Models — Specification Comparison
- Request OEM Quote
Sources & Verification
Specifications on this page are sourced from Chengguang Power Tech factory technical documentation and tested to JIS D 5301, DIN EN 50342-1, SAE J537, and IEC 60095-1. Contact Chengguang for the exact data sheet. Every batch ships with a Certificate of Analysis (CoA).
Author: Chengguang Engineering Team · Reviewed: IATF 16949 Quality Department · Last updated: 2026-08-19