4D — BCI Group Size Reference
BCI 4D is a North American battery group size used for heavy trucks, buses, construction equipment and marine. This page is a group-size reference: it documents the standard case dimensions and typical 12 V lead-acid ratings for the group, not a specific Chengguang stock model.
Standard reference, not a stock SKU
BCI group dimensions are published standard data. The capacity and CCA figures below are typical ranges for this group and vary by manufacturer and technology (SLI / EFB / AGM). Chengguang supplies this group on request as an OEM / private-label development; confirm the exact datasheet before ordering.
Quick Reference
| Parameter | Specification |
|---|---|
| Group | 4D |
| Standard | BCI (Battery Council International) |
| Battery Type | SLI / EFB / AGM (group size is technology-independent) |
| Nominal Voltage | 12 V |
| Typical Capacity (C20) | ~140 Ah (typical) |
| Typical CCA | ~1,100 A SAE (typical) |
| Dimensions (L × W × H) | 527 × 222 × 251 mm |
| Dimensions (inches) | 20.75 × 8.75 × 9.875 in |
| Terminal Type | Stud / bolt |
| Hold-Down | Top frame / bolt-down |
Specification ranges
Group dimensions are standardised; capacity and CCA are typical values that vary by manufacturer and technology. CCA is test-method dependent (SAE −18 °C). Confirm the final datasheet for any specific product.
How to Identify This Group
Large heavy-duty BCI group for high-cranking diesel applications. 4D is identified by its case footprint (527 × 222 × 251 mm) rather than by a performance grade — the BCI group number carries no capacity information by itself. Check the battery label for the group number, or measure the tray: the length and width must match the group footprint, and the height must clear the hold-down and hood.
Typical Applications
BCI 4D is commonly used for heavy trucks, buses, construction equipment and marine. Fitment is a cross-reference decision — always confirm against the vehicle or fleet requirement.
Regional Markets
North America (core market). Outside North America, vehicles built for BCI fitments (export models, US/Canadian vehicle parcs) may use this group; otherwise the local market standard (JIS or DIN/EN) applies.
Equivalent & Cross-Reference
JIS 145G51 (508 × 222 × 212–240 mm) is comparable in footprint — verify terminal type and hold-down.
Groups are not automatically interchangeable
Even where footprints are close, terminal type and hold-down differ between standards. A near-equivalent dimension does not mean a drop-in replacement.
OEM & Private Label Availability
This group is not a listed Chengguang stock model. It is available as an OEM / private-label development on request — specification, sampling and packaging are confirmed per project.
- OEM manufacturing by Chengguang Power Tech Co., Ltd. (Jinzhou, Hebei, China)
- Custom standard, case, terminal, label and packaging
- Batch traceability and pre-shipment testing
- DG-compliant export packaging (UN 2794 / Class 8)
Request OEM Quote View OEM Process
Frequently Asked Questions
Is BCI 4D a Chengguang stock model?
No. Chengguang's listed stock models are JIS and DIN/EN. BCI groups are available as an OEM / private-label development on request.
What are the dimensions of BCI 4D?
527 × 222 × 251 mm (standard group footprint). Confirm the exact case, terminal and hold-down for your application.
Is BCI 4D interchangeable with a JIS or DIN battery?
Not automatically. JIS 145G51 (508 × 222 × 212–240 mm) is comparable in footprint — verify terminal type and hold-down. Terminal type and hold-down differ between standards.
What voltage is BCI 4D?
12 V nominal (standard for this group).
Last verified: 2026-09-12 | Source: BCI group-size standard data | Reference page — not a product listing | Technical Reference
Author: Chengguang Power Tech Technical Team