$50.00 - $80.00
Min. Order : 5 Pieces

Trade assurance 8 steps charging smart 18650 battery charger 12v 24v 48v 8A 15A 20A 25A 50A 110v 220v battery charger ,optional

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Quick Details

Payment Terms: L/C,T/T,Western Union,MoneyGram
Supply Ability: 200 Piece/Pieces per Week
item: battery charger
Warranty: 2 years
Place of Origin: Jiangsu China
Use: Standard Battery
Port: 1 x USB
battery types: GEL, Lead Acid, AGM, Calcium etc.
Model Number: 12v 24v 48v
voltage: 12v 24v 48v
charging rate: optional
Brand Name: PassPower
current: 8A 15A 20A 25A
Type: Electric
charging efficiency: 85-90%
charging strategy: 8 charging stages
Packaging Detail: carton
Package Preview: https://sc02.alicdn.com/kf/HLB17QxyO3DqK1RjSZSyq6yxEVXa9.jpg_640x640.jpg
Suzhou Maili Electrical Appliance Co., Ltd.
Manufacturer, Trading Company
Response Rate
On-time delivery rate
US$ 120,000+
R&D staffs
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         Product Description:                                                                                              


Smart charger is Maili's following generation smart charger. It has many of the protective features that consumers expect to have in a charger, including battery misconnection(wrong voltage), reverse polarity, battery disconnection or not connected, and battery failure analysis. 

The latest high efficiency switching topology and microcontroller power management are utilized in its design. 8 charging stages are offered in our products. Charging rate/type selection can be easily made by the user through the selection switch on the front panel.

Depending on battery brand and type (lead acid, gel, lithium iron, and lithium manganese), the battery may require special charging curves and adjustment to the protective functions which differs from the standard settings. The charging curves and protective functions can be customized by reprogramming its firmware. Please note: the factory charging curve is for charging lead-acid battery. Please contact with Maili regarding other types of battery charging requirements.


Product Pictures:


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Technical Parameters of Battery Charger


Technical Parameters of Battery Charger


Charging Stages
Based on the power of battery, the different charging stages could be automatically selected by the charger.
In order to avoid the battery being over-charged or under-charged, the charging current and voltage varies from

different charging stages


Rated Charging Current:   25A


Charging Voltage Charging Current


Desulphation <11VDC 16A(peak value)(±0.4A)


Soft Start :11VDC-12VDC 9.5A(±0.3A)


Bulk Charge: 12VDC-14.7VDC 25A(±0.5A)


Absorption :14.7VDC A steady decline in charging current


Battery Test: >12.6VDC 0A


Recondition :15.9VDC 5A(±0.3A)


Float :13.8VDC


Equalization :12.9VDC-14.7VDC 4A(±0.2A)


Rated Charging Current: 20A


Charging Voltage Charging Current


Desulphation :<11VDC 13A(peak value)(±0.4A)


Soft Start :11VDC-12VDC 7.5A(±0.3A)


Bulk Charge :12VDC-14.7VDC 20A(±0.5A)


Absorption :14.7VDC A steady decline in charging current


Battery Test :>12.6VDC 0A


Recondition :15.9VDC 4A(±0.2A)


Float :13.8VDC


Equalization :12.9VDC-14.7VDC 3.5A(±0.2A)


Rated Charging Current: 15A


Charging Voltage Charging Current


Desulphation: <11VDC 10A(peak value)(±0.4A)


Soft Start :11VDC-12VDC 5.5A(±0.3A)


Bulk Charge :12VDC-14.7VDC 15A(±0.5A)


Absorption :14.7VDC A steady decline in charging current


Battery Test :>12.6VDC 0A


Recondition :15.9VDC 3A(±0.2A)


Float :13.8VDC


Equalization :12.9VDC-14.7VDC 2.5A(±0.2A)


Rated Charging Current: 8A


Charging Voltage Charging Current


Desulphation: <11VDC 5A(peak value)(±0.3A)


Soft Start :11VDC-12VDC 3A(±0.2A)


Bulk Charge :12VDC-14.7VDC 8A(±0.5A)


Absorption :14.7VDC A steady decline in charging current


Battery Test :>12.6VDC 


Recondition: 15.9VDC 1.5A(±0.2A)


Float :13.8VDC


Equalization :12.9VDC-14.7VDC 1.3A(±0.2A)


       Multiple Charging Stages:  8  stages, extending the service life of battery     


1. Stage 1(pulse charging) :


Pulse charging is used to revive tired lead acid battery which is either improperly charged/discharged or allowed to self-discharge as occurs during non-use. Basically,

help to restore its normal chemical properties.


2. Stage 2 (soft start):


Use low charge voltage and current to preparethe battery toaccept upcomingbulk charging,

so a better charge can be applied.


3. Stage 3 (constant current):


A high constant current is provided so the battery can be quickly charged to 2.4Vper cell.


4. Stage 4 (constant voltage):


A constant voltage of 2.4V per cell is provided until the charging current naturallytapers down

to a low level.


5. Stage 5 (analysis):


The charger will stop charging for 2 minutes to determinebattery status. If thebattery voltage

is higher than 2.1 V per cell, the battery is determined as OK andwill move on to stage 6.

If the battery voltage is lower than 2.1V per cell, the batteryfail indication will come ON,

and the charger will berecharged following the before steps second time.


6. Stage 6 (recondition boost charge):


Boost voltage is provided to recondition the battery storage capacity to its originalstate.


7. Stage 7 (float charge):


A float voltage of 2.3V per cell is provided for extended period of time so that thebattery can

maintain full charge.


8.Stage 8 (maintain):


Maintenance charge is provided to compensate for battery self- discharge and extend battery life.


        Exhibition :                                   



       Our service :                                   


1. Samples

Samples are Available for Testing and Market Test.


2. Guides and After-service Consultancy

Mai LI Power Team will offer these guides below.

A. Need an Accessory?

B. Products Repair?

C. Power Problems to Solve?

D. Power Protection Solutions, etc.?



        Our company:                                                                                                         


We are specializing in manufacturing power inverter, solar controller, battery charger .

Since our establishment, we have persisted in advanced production technology and attracted elites from foreign sanitary ware market.

We are always in the leading position of the domestic market in this field. With rapid development.

We have stabilized the quality of our products. Simultaneously, our staff members emphasized on the quality, design and development of products all the time .

our company .jpg