55B24 Battery — N45, N40

The 55B24 is the smallest JIS battery in the Chengguang range — a narrow-frame design (129 mm wide) for compact sedans, hatchbacks, and kei cars where battery tray space is limited. It delivers 45Ah and 370 CCA — adequate for 1.3L-1.6L gasoline engines in temperate to warm climates.

55B24 Automotive Battery

Quick Reference

Parameter	Specification
Model	55B24
Also Known As	N45, N40
Standard	JIS
Battery Type	SLI
Nominal Voltage	12 V
Capacity (C20)	45 Ah
CCA Rating	370 A (SAE)
Dimensions (LxWxH)	238 x 129 x 202-227 mm
Terminal Type	T1 small post
Polarity	Left (-), Right (+) — JIS type [0]
Hold-Down	B00 (top frame)
Approximate Weight	11-14 kg
Chengguang SKU	CG-JIS-55B24

Specification Ranges

Values shown are typical ranges. Exact specifications vary by production batch. Contact Chengguang for your order's technical data sheet.

How to Identify This Battery

Narrow case: 129 mm width with T1 small post terminals. Much narrower than the D-series (173 mm). Label shows '55B24', 'N45', or 'N40'. Measure the width — if your tray is ~130 mm wide, you need a 55B24; if ~175 mm wide, you can upgrade to a D-series battery.

Vehicle Applications

Small passenger cars, compact sedans, kei cars with 1.3L-1.6L gasoline engines.

Compatible Vehicles

Fitment Verification

Vehicle fitment is a general guide based on market experience. Always verify your vehicle's battery tray dimensions, terminal position, and hold-down type before ordering.

Regional Markets

Southeast Asia (Thailand, Indonesia, Philippines, Vietnam — highest volume), Africa (East/West — compact car segment), Middle East (small car segment), Oceania (light vehicles)

Manufacturing at Chengguang

Small-frame automated line. Ca-Ca grid alloy. Reinforced thin-plate design for reliable starting within compact dimensions. Average: 3,000-4,000 units/day.

Testing & Quality Control

100%: CCA (SAE J537 at -18degC, >370A), OCV (>12.60V), visual. Batch: C20, charge acceptance, vibration (JIS D 5301).

55D23 — wider case (173 mm), higher capacity (60Ah). Upgrade if tray allows
65D26 — much larger (260 x 173 mm). Full-size upgrade for larger vehicles
DIN66/56638 — European compact equivalent (verify terminals)

Equivalent Models & Cross-Reference

Model	Standard	Relationship	Confidence
N45	JIS	Alias / Same case	:material-check: High
N40	JIS	Alias / Same case	:material-check: High

Equivalent Does Not Mean Identical

Different model designations may indicate different specifications. Cross-standard equivalents are dimensional approximations only.

OEM & Private Label Availability

This model is available for OEM manufacturing under your brand from Chengguang Power Tech:

IATF 16949:2016 certified manufacturing in Jinzhou, Hebei, China
Custom label, case color, terminal type, and retail packaging
Full batch traceability — raw material lot to shipping container
100% pre-shipment CCA and capacity testing with CoA
DG-compliant export packaging (UN 2794 / Class 8)
Technical data sheet, MSDS, and Certificate of Analysis per shipment

Request OEM Quote }View OEM Process}

Frequently Asked Questions

What vehicles use a 55B24?

Compact Japanese vehicles — Toyota Vios/Yaris, Honda City/Jazz, Suzuki Swift, Nissan March. Verify tray: 238 x 129 mm.

Is 55B24 the same as N45 or N40?

Same physical case. N45 = 45Ah class, N40 = 40Ah class. Chengguang 55B24 rated 45Ah, covering both designations.

Can I upgrade to a larger battery?

55D23 (173 mm wide) or 65D26 (260 x 173 mm) offer more capacity, but require wider/longer battery trays. Measure before upgrading.

How long does a 55B24 last?

2-4 years depending on climate. Hot climates reduce life to 18-24 months. Regular charging system checks extend service life.

Last verified: 2026-08-11 | Source: Chengguang Power Tech Co., Ltd. | SKU: CG-JIS-55B24 | Manufactured in Jinzhou, Hebei, China

Author: Chengguang Power Tech Technical Team | Reviewed: IATF 16949 Quality Department | Technical Reference