Lead-Acid Battery Knowledge
CCA, groups, ratings, technology and applications for automotive and truck lead-acid batteries.
At a glance: Lead-acid is the starting battery's home turf — CCA (cold-cranking punch), group sizes (physical fit), ratings (CCA / Ah / reserve capacity) and the technology family (flooded, EFB, AGM, gel) that serves automotive, truck, marine, RV and standby duty. Every rating below names its test standard, because the condition is half the meaning of the number.
CCA cluster
- Types of lead-acid batteries (the complete family)
- What is CCA (Cold Cranking Amps)?
- CCA vs CA vs MCA: the temperature ladder
- How CCA is tested
- CCA by battery group
- CCA and temperature
Battery groups
- Battery group sizes explained (H4–H9, L1–L6, JIS, BCI)
- What size battery does my car need?
- H6 vs H7 vs H8
- H7 vs H8 battery
- Group 31 battery
- Group 24 vs Group 27
- 8D battery
- GC2 battery (6V golf-cart)
- N70 vs N100 (JIS truck sizes)
- Group size vs performance mapping (what a group number does — and does not — guarantee)
Ratings
Product types
- What is an SLI battery?
- What is an AGM battery?
- What is an EFB battery?
- What is a gel battery?
- Truck battery (N-series, Group 31/8D)
- Marine battery (starting / deep-cycle / dual-purpose)
- UPS battery (standby power)
- Motorcycle battery (AGM, JIS sizes)
- Forklift battery (motive power, lead-acid vs lithium)
- RV battery (house vs chassis, AGM vs lithium)
- Solar battery (off-grid storage, lead-acid vs lithium)
- AGM charging (voltages, limits, overcharge)
- Battery equalization (flooded-only controlled overcharge)
- How to desulfate a battery (what works)
- Lead-acid battery disposal (the recycling loop)
- Telecom battery (tower standby power)
- Industrial battery (motive / standby / stationary)
Technology
Charging & maintenance
- How to charge a lead-acid battery (bulk / absorption / float)
- What is battery sulfation (the failure you can prevent)
- How to read a battery date code
- 12V voltage chart (state of charge by voltage)
- How long does a car battery last?
- Battery terminal corrosion (the crust that stops starting)
- Why batteries weaken in cold weather
- Battery self-discharge (going flat while idle)
- Battery warranty (pro-rated, what voids it)
- Why is my car battery draining? (parasitic draw)
- Battery maintainer vs charger
- How to jump start a car safely
- How to test a battery at home
- Battery terminal types (SAE / JIS / stud / side)
- Dual-purpose battery (starting + cycling)
- Battery water level (watering a flooded battery)
- How to calculate battery runtime
- How long does it take to charge a battery?
- How much battery capacity do I need?
- Product catalogue (Powsea OEM) — commercial section, 35 models
- Battery calculators & tools — runtime, sizing, charging time
- Lead-acid recycling (the ~99% closed loop)