High C-Rate Car Automotive12V 20Ah Lithium Battery
Lithium Auto batteries are mainly for any application which using a Lead Acid, Gel or AGM Battery. Inside are put an integrated BMS, designed to handle superior abuse tolerance.
Main Features:
Smart LiFePO4 Motorcycle battery packs show our bespoke casing and BPS(Battery Protection System) further increase safety and durability.
Specifications:
Other Features
Compared with the lead-acid batteries,the LiFePO4 car start batteries are:
Smaller: 1/2 of the size
Lighter: 1/3 of the weight
Safer: Can be installed in any direction without leakage
Longer Life: 7-10 times longer
Compared with other lithium car batteries, our lithium starting engine batteries are:
High cranking Amps up to 130A
Superior Safety, abuse tolerance
Extended battery life of 2000 100% deep cycle
Low Self-discharge
Patented braided copper strings to support high power
Strong cell holders to protect each cell from vibration and overheating
Patented design of hexagonal cap for screws drive
Gold-plating copper terminals to ensure the best conductivity
No wiring structure
Built-in self-balance chip
Benefits
- 2 years’warranty and maintenance-free if no parasitic drains
- Built-in balanced charging system to ensure long-term consistency of the cells
- Safest perfomence :LiFePO4 battery made(Green energy, no toxic, and environment friendly)
Application
12V 20Ah :recommended for passenger vehicle up to 3.0L; replacement of up to 12V 60 Ah lead-acid battery
Recommended for
- Track/Race bikes up to 1200cc or more
- Competition Supermotos and Dirtbikes
- Competition ATVs
What high C-rate means
C-rate expresses charge or discharge current as a multiple of capacity. For a 20 Ah cell, 1C is 20 A, so a 5C cell can deliver 100 A and a 40C cell can deliver 800 A — the kind of current a starter motor demands. That is why a 20 Ah LiFePO4 battery can crank an engine that a 20 Ah lead-acid battery never could: the amp-hour rating is similar, but the rate capability is in a different league.
| Term | Meaning |
|---|---|
| C-rate | Current as a multiple of capacity (1C = capacity × 1) |
| CCA (cold cranking amps) | Current deliverable for 30 s at −18 °C without falling below 7.2 V |
| Continuous discharge | Sustained current the pack can supply, e.g. 100 A |
| Pulse discharge | Short bursts, e.g. 800 A for starting |
LiFePO4 vs lead-acid for 12V starting batteries
| Property | 12 V LiFePO4 | Lead-acid / AGM |
|---|---|---|
| Weight | About a third | Baseline |
| Cycle life | 2,000+ | 300–500 |
| Self-discharge | 1–3 % per month | 4–15 % per month |
| Voltage under load | Holds ~12.8 V, cranks harder | Sags as it discharges |
| Maintenance | None | Watering, terminal care |
The lower weight and the flat voltage curve are what make a lithium starter battery attractive in race and performance vehicles — the same properties that make a 12 V pack from 3.2 V cells so effective.
Applications
- Race and track bikes — weight saving and reliable cranking, up to 1,200 cc and beyond.
- Competition ATVs and supermotos — high pulse current for repeated starts.
- Passenger vehicles up to 3.0 L — a direct replacement for a 12 V 60 Ah lead-acid battery.
- Track cars and classic vehicles — where the battery sits for long periods and self-discharge matters.
Charging a 12V 20Ah LiFePO4 battery
- Charge voltage — 14.6 V full charge on a 4S pack (3.65 V per cell).
- Charge current — 0.2C to 1C, so 4 A to 20 A for a 20 Ah pack.
- Profile — set the charger or alternator regulator to LiFePO4; a lead-acid equalisation stage must be disabled.
- Cold — do not charge below 0 °C; the BMS will inhibit it on a protected pack.
The protection that keeps the pack inside these limits is the BMS; a covered example is our 51.2 V 150 Ah deep-cycle battery.
12V lithium starter battery FAQs
Can a lithium battery start a car?
Yes. A high C-rate LiFePO4 pack delivers the pulse current a starter needs — often 600–800 A — from a small, light package.
Does a 12V 20Ah lithium battery replace a 12V 60Ah lead-acid?
For starting duty, yes. The cranking current comes from the rate capability rather than the amp-hour rating, so a smaller lithium pack starts engines a larger lead-acid unit would struggle with.
What is CCA on a lithium battery?
Cold cranking amps — the current the battery can deliver for 30 seconds at −18 °C while staying above 7.2 V. Well-built LiFePO4 starter batteries are rated in the hundreds of amps.
Need a quote? Tell us your vehicle and starting current and we will recommend the right 12 V LiFePO4 battery — factory-direct, no obligation.
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