What devices can this charger work with?

Compatible with all 12V lead-acid batteries for cars, motorcycles, tricycles, and solar systems.

Does the analog ammeter display real-time current?

Yes, it displays real-time charging current, dropping near 0A when fully charged.

Is it normal for the charger to get warm during charging?

Slight warmth is normal with high current; fan cools it. Disconnect if fan stops or unit overheats.

Can I customize this battery charger?

Yes, we offer customization, including logo, packaging, plug types, and output adjustments. MOQ applies. Contact us.

High-Efficiency 25A Fully Automatic Charger for All Devices

Name: High-Efficiency 25A Fully Automatic Charger for All Devices
Brand: Guangzhou Jianrui Electronics Co., Ltd.
SKU: 2305531935

Guangdong, ChinaGuangzhou Jianrui Electronics Co., Ltd.

US$15.70

1-199 Pieces

US$14.60

200-499 Pieces

US$14.10

500-999 Pieces

US$13.50

1,000+ Pieces

Product specifications

Charging power

Sample price:US$16.00/piece.Request sample

Product profile

Customization

Available

Rated Power

12V-170W

Charging Current

12V/40A

Model NO.

MA-1240AS

Input Voltage

160~250V

Type

Lead-Acid Battery Charger

Charging Type

Electric Charger

Principle

Half-Bridge Charger

Display Mode

Analog Ammeter Display

Charging Mode

4-Stage Intelligent Charging

Built-in Protection

Reverse Connection, Overcharge, Overload, Short Ci

Heat Dissipation

Aluminum Alloy Casing ,Cooling Fan

Applicable Battery Type

Lead-Acid Battery

Accessories

Battery Alligator Clips, Power Cord

Custom Service

Support Logo, Packaging, Plug Customization

Warranty Period

12 Months Warranty

Transport Package

Box Packed

Specification

19.7*14.5*7.5cm

Trademark

Jianrui

Origin

Guangzhou, China

HS Code

8504403000

Production Capacity

10, 0000 Pieces Per Year

Key features

4-Stage Intelligent Charging: Automatically switches between bulk, absorption, float, and pulse repair modes for optimal battery health.

Universal Voltage Compatibility: Wide AC input range of 150V-250V supports global power grids without voltage converters.

Comprehensive Safety Protections: Built-in safeguards against overcharge, overcurrent, overheating, short circuit, and reverse polarity.

Active Heat Dissipation System: Aluminum alloy casing combined with a temperature-controlled cooling fan ensures stable operation.

Real-Time Analog Display: Integrated analog ammeter shows real-time charging current, dropping to near zero when fully charged.

Multi-Battery Type Support: Compatible with AGM, Gel, Flooded, and Deep Cycle lead-acid batteries ranging from 10Ah to 1000Ah.

OEM and ODM Customization: Supports custom logo, packaging, plug types, and output voltage adjustments for bulk orders.

1-Year Warranty Coverage: Includes 12-month warranty with global technical support and spare parts supply.

Company profile

High Repeat Buyers ChoiceFast DeliveryFlexible Customization100% Finished Products Inspection

Guangzhou Jianrui Electronics Co., Ltd.

Guangdong, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedNearest Port: Guangzhou Port, Shenzhen PortAverage Response Time: ≤0.19h CertifiedTerms of Payment: LC, T/T, D/P, etc. CertifiedInternational Commercial Terms(Incoterms): CIF, CFR, EXW, FOB

About Our Factory & Business Background

Address3rd Floor, No.15, Lane 14, Baishuikeng Central Street, Nancun Town, Panyu District, Guangzhou City, Guangdong Province

Plant Area660 square meters

Average Lead TimePeak Season Lead Time: within 15 workdays Off Season Lead Time: within 15 workdays

Minimum Order Quantity1 Piece

Supply Chain Partners15

Our Production Capability & Technical Expertise

Main ProductsToroidal Transformer, Inverter

Production Lines2

Production MachinesReflow Soldering Machine, SMT Machine, Super Mute Terminal Machine, Winding Machine, Semi-automatic Dip Welding Machine, Cutting Machine

Inspection Type for Finished Products100% inspection(Function inspection & Visual inspection)

Inspection Method for Finished ProductsFinished product checked by packing staff

Traceability of Raw MaterialsYes

Our Industry Experience & Global Business Record

Year of Establishment2014-06-13

Main MarketsNorth America, Southeast Asia

Repeat Buyers Choice80%~100%

Overseas Agent/BranchNo

Product Q&A

Q:What battery voltage is this charger for?

Designed for 12V lead-acid batteries, compatible with car, motorcycle, tricycle, gel, and maintenance-free lead-acid batteries. NOT for lithium or disposable dry batteries.

Q:What's the input voltage range?

Wide AC input 150V-250V, compatible with most countries.

Q:What is the charging current? How long to fully charge a battery?

Rated current 20A. A 45Ah battery takes ~2 hours, 60Ah ~1.5 hours; time depends on remaining power.

Q:What is 3-stage smart charging? What benefits does it bring?

3-stage charging: fast constant current, constant voltage equalizing & float maintenance charging. Prevents overcharge & extends battery life.

Q:Will it stop charging automatically when full? Can I charge overnight?

Switches to low-voltage float mode when charged. Safe for overnight charging.