Battery chargers are mandatory accessories for all battery applications. There are two kinds of battery chargers in the market: eight-step chargers and normal, two-step chargers.
Businesses need to choose the right battery charger for their charging needs, or it may lead to problems when it comes to working on vehicles.
Differences explained
There are several differences between eight-step battery chargers and two-step chargers. These can influence the decision on which to use.
Desulfation / Recovery
- Eight-step Battery Charger: actively breaks down lead-sulfate crystals on aged batteries to restore capacity.
- Normal Battery Charger: no desulfation stage—struggling batteries stay weak.
Soft Start / Initialisation
- Eight-step Battery Charger: applies a low current to assess battery condition and gently “wake up” deeply discharged cells.
- Normal Battery Charger: immediately delivers full charge current—risks overheating or stress on old batteries.
Bulk Charge
- Eight-step Battery Charger: delivers maximum safe current until battery reaches ~80 % SoC and monitors voltage and temperature.
- Normal Battery Charger: provides constant current until a pre-set voltage is reached (often uncontrolled).
Absorption Charge
- Eight-step Battery Charger: holds voltage constant while tapering current; ensures cells equalise and fully absorb charge.
- Normal Battery Charger: lacks proper absorption—often cuts to float prematurely or never reaches full charge.
Analysis / Rest
- Eight-step Battery Charger: pauses charging to measure voltage drop under rest, evaluating battery health and capacity.
- Normal Battery Charger: no rest/test phase—hidden weak cells go undetected.
Reconditioning
- Eight-step Battery Charger: performs periodic equalisation or pulse-charging to rebalance cell voltages and further desulfate.
- Normal Battery Charger: does not rebalance—cell imbalance accumulates over time.
Float / Maintenance
- Eight-step Battery Charger: switches to a precise, low-level float voltage to maintain 100 % SoC without overcharge.
- Normal Battery Charger: applies a constant float voltage that may overcharge (gassing) or under-charge (self-discharge).
Pulse / Standby Mode
- Eight-step Battery Charger: periodically tests and “pulses” the battery to prevent self-discharge and keep it ready for long-term storage.
- Normal Battery Charger: no standby; battery left unmonitored, so capacity slowly degrades.
What should you choose?
Eight-Step Intelligent Chargers are ideal if you:
- Rely on batteries for boats, RVs, motorcycles or critical standby power
- Want to maximise battery lifespan and performance
- Need remote or long-term battery maintenance (e.g., seasonal storage)
When looking at manufacturers of eight-step chargers, businesses should consider the following items:
Battery Charging Technologies
The technology is the foundation and the cutting-edge advantage of a battery charger manufacturer. leagend has been a top manufacturer of eight-step battery chargers and has been playing a vital role in the global markets for about 20 years. This is thanks to its leading and advanced technologies of integrating its battery testing technologies, battery monitoring technologies and battery charging technologies.
Currently, leagend has three types of eight-step battery chargers available. Advanced eight-step intelligent chargers such as leagend BC501 and leagend BC801, two-in-one eight-step battery chargers integrated with battery testers such as the leagend BC521 and leagend BC821, and three-in-one eight-step battery chargers integrated with battery testers and Wi-Fi connection.
Customised Solutions
Customisation is an indicator of a manufacturer’s dedication to its market. Because of its advanced battery charging technologies and solid qualities, more and more professional customers work with leagend for tailored products and solutions to compete with their competitors. leagend offers deeply customised solutions from product design, technology development to production.
Quality and Delivery
Quality is everything for a brand and delivery is a true example of value realisation for customers. Semi-automatic production and zero delivery delay are the best evidences for leagend to highlight its strong qualities and market performance.
Sustainable and Health Development
Established in 2005, by 2025, leagend’s R&D investment ratio has grown up to 40%, while its ratio of technician and engineering staff has risen up to 50%. The business has over 60 copyrights, over 60 inventions and relative patents, and over 20 certificates. These are the foundation for leagend to be a top manufacturer of eight-step battery chargers in the global markets for years.
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