Automotive Battery Technical Knowledge Center
Welcome to the Chengguang Automotive Battery Technical Knowledge Center — engineering-level documentation on automotive battery technology, manufacturing, and testing, written by a manufacturer, for the people who actually specify and buy these batteries.
Maintained by Chengguang Power Tech Co., Ltd., an IATF 16949 certified OEM automotive battery manufacturer since 2002.
What This Covers
Five knowledge areas, from the chemistry inside the case to the standard printed on the label:
| Area | What you'll learn |
|---|---|
| Battery Technology | How SLI, AGM, EFB, Heavy Duty and VRLA differ — construction, strengths, limits |
| Battery Components | Lead grids, separators, electrolyte, case — what each part does and why it matters |
| Battery Testing | CCA, Reserve Capacity, C20, Charge Acceptance — how they're measured and read |
| Manufacturing | Grid casting, plate pasting, curing, formation — the production process end to end |
| Standards | JIS, DIN, BCI, AS, SA — the specs and regional differences behind the labels |
Knowledge Areas
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:material-flash: Battery Technology --- SLI, AGM, EFB, Heavy Duty, VRLA — how each technology works, construction, advantages and limitations.
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:material-cube-outline: Battery Components --- Lead grids, separators, electrolyte, battery cases — materials, design, and manufacturing.
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:material-test-tube: Battery Testing --- CCA, Reserve Capacity, C20, Charge Acceptance — test methods, standards, and interpretation.
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:material-factory: Manufacturing --- Grid casting, plate pasting, curing, formation — the complete production process.
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:material-scale-balance: Standards --- JIS, DIN, BCI, AS, SA — technical specifications and regional differences.
Start Here
New to automotive batteries? These are the two concepts everything else builds on:
- :material-snowflake: Cold Cranking Amps (CCA) — the cold-start power rating, and why it's not the same as stored energy.
- :material-battery-charging: Reserve Capacity — how long the battery keeps accessories running if the alternator fails.
If you're comparing battery types before you buy, start with SLI, AGM, and EFB to understand the trade-offs.
Related Resources
- :material-car-battery: Battery Model Database — JIS & DIN specifications and cross-references
- :material-package-variant-closed: OEM Manufacturing — build your own battery brand
- :material-calculator: Battery Tools — free calculators and finders
- :material-domain: Chengguang Energy — factory & commercial inquiries