Leading Manufacturer of Lithium Battery Chargers and Power Adapters
+86-15361625091
Views: 26 Author: Lion Publish Time: 2026-10-31 Origin: Site
Looking for a 42V e-bike battery charger with a Rosenberger magnetic connector?
Lilon offers two charger options for compatible 36V lithium-ion battery systems:
42V 2A Rosenberger Battery Charger
42V 4A Rosenberger Battery Charger
Both models feature a Rosenberger-style magnetic charging connector and are designed for compatible e-bike battery applications, including selected BMZ battery systems.
These are third-party replacement charger options, not original BMZ chargers. Before selecting a charger, the battery voltage, charging current, connector version, and pin configuration must be checked.
Lilon provides two output-current options to meet different battery charging requirements.
| Product Specification | 42V 2A Charger | 42V 4A Charger |
|---|---|---|
| Output Voltage | 42V | 42V |
| Output Current | 2A | 4A |
| Connector | Rosenberger magnetic connector | Rosenberger magnetic connector |
| Battery Type | Compatible lithium-ion batteries | Compatible lithium-ion batteries |
| Application | Compatible e-bike battery systems | Compatible e-bike battery systems |
The specifications above describe the two Lilon charger models. Please confirm the connector version and electrical compatibility before ordering.
The 42V 2A charger is designed for compatible 36V lithium-ion e-bike batteries that support a 42V charging voltage and a 2A charging current.
It is an option for users looking for a replacement charger with a Rosenberger magnetic connector.
The 42V 4A charger provides a higher output current than the 2A version.
It may be suitable for compatible battery systems that support 4A charging. However, a higher charging current does not automatically mean faster or safer charging for every battery.
Always check the battery manufacturer's recommended charging current before choosing the 4A model.
Rosenberger magnetic connectors are used in certain e-bike battery charging systems.
Their magnetic connection design provides a convenient way to connect the charger to the battery. However, not every magnetic connector is electrically interchangeable.
When selecting a replacement charger, check the following:
Connector model and version
Number and arrangement of contacts
Pin assignment and polarity
Charging voltage and current
Any communication or identification requirements
A connector that looks similar may still have a different electrical configuration. Matching the connector appearance alone is not enough to confirm compatibility.
Some BMZ e-bike battery systems use Rosenberger charging connectors. This makes compatible Rosenberger chargers a potential replacement option for selected BMZ battery applications.
However, BMZ batteries are available in different models and configurations. Not all BMZ batteries use the same connector or charging specifications.
Lilon's 42V 2A and 42V 4A chargers are third-party replacement options. They are not manufactured or supplied as original BMZ products.
Before selecting a charger for a BMZ battery, please verify:
The exact BMZ battery model.
The battery's nominal voltage and required charging voltage.
The maximum permitted charging current.
The Rosenberger connector version and pin configuration.
Whether the battery requires a specific communication or identification function.
If you are unsure which model you need, provide a photo of the battery label and the original charger's specification label for compatibility checking.
The main difference between these two models is their output current.
| Comparison | 42V 2A | 42V 4A |
|---|---|---|
| Output Voltage | 42V | 42V |
| Output Current | 2A | 4A |
| Charging Current | Lower | Higher |
| Battery Requirement | Battery supports 2A charging | Battery supports 4A charging |
The correct charger depends on the battery manufacturer's specifications, not simply the desired charging speed.
A 42V 4A charger should not automatically replace a 42V 2A charger. If the battery is only rated for a maximum charging current of 2A, using a 4A charger may exceed its permitted charging conditions.
Always follow the battery manufacturer's charging recommendations.
Lilon is a charger manufacturer based in Shenzhen, China, specializing in lithium battery chargers and power adapters.
Our 42V 2A and 42V 4A Rosenberger charger options are developed for compatible e-bike battery applications.
We focus on:
Stable charging performance
Reliable charger protection
Consistent product quality
Connector and electrical specification matching
For replacement charger inquiries, our team can help check the required specifications before confirming a suitable model.
A 42V charger is commonly used for 36V nominal lithium-ion battery systems. However, the battery chemistry and manufacturer's specified charging voltage must be confirmed before use.
Both chargers have a 42V output voltage. The difference is the output current: 2A or 4A. The correct option depends on the battery's permitted charging current.
Not necessarily. The battery must support a charging current of 4A. Always check the battery specifications before replacing the original charger.
No. Lilon offers third-party replacement charger options for compatible battery systems. These products are not original BMZ chargers and are not presented as BMZ-authorized products.
No. BMZ battery systems may use different connector types and configurations. Check the exact battery model and connector before selecting a replacement charger.
Please provide the battery model, a clear photo of its specification label, and a photo or specification label of the original charger. Our team can review the electrical and connector requirements.
Lilon offers 42V 2A and 42V 4A Rosenberger magnetic connector charger options for compatible e-bike battery systems.
Contact Lilon to check the specifications and find a suitable replacement charger for your battery application.
Lilon Charger – Professional Lithium Battery Charger Manufacturer in Shenzhen, China.
