Does this charger have a repair mode?

Yes, our chargers have a one-click repair mode, which is only applicable to 12V batteries, not 24V, and it gradually recovers the sulfurized plates by charging at low current for a long period of time to restore the performance of the battery.

What are the output voltage and full charge voltage of the charger?

Output voltage 12V- Full charge voltage 14.4V,Output voltage 24V - Full charge voltage 28.8v.

What to do if the battery is often not fully charged?

ls the battery aging or damaged, causing excessive discharge and insufficient charging? You can try the one click repair mode to repair the battery for free.

Is it a jump starter?

No, it is a battery charger and maintainer, not a jump starter.

Can it charge a 0V battery?

Yes, you can start charging if you use the repair mode when the battery voltage is 0V.pls Note: It can not repair a totally dead battery.

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Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

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LVYUAN 12V/24V Car Battery Charger with Trickle Charger Automotive Smart Battery Charger, Smart Battery Maintainer, 10A/20A/40A for Car Truck Motorcycle LiFePO4 Lithium and Lead Acid Batteries

LVYUAN 12V/24V Car Battery Charger with Trickle Charger Automotive Smart Battery Charger, Smart Battery Maintainer, 10A/20A/40A for Car Truck Motorcycle LiFePO4 Lithium and Lead Acid Batteries

Product ID: 692551576

Details

Brand
LVYUAN
Color
black
Item Weight
3.7 Pounds
Output Voltage
12 Volts (DC)
Product Dimensions
6.88"D x x

⚡40A max fast charge

📊Intelligent LED display

🔋Multi-chemistry battery support

Description

⚡ Charge smarter, drive stronger — never get stranded again!

SMART LED DASHBOARD - Monitor voltage, current, temperature, and battery health in real-time with a crisp digital display.
BATTERY REVIVAL MODE - Revive long-neglected or weak batteries with the intelligent 0V start and repair function.
RAPID 40 A CHARGING POWER - Get back on the road faster with up to 40 amps of smart, multi-stage charging.
ADVANCED SAFETY PROTECTIONS - Stay worry-free with built-in short circuit, overcurrent, reverse polarity, and cooling safeguards.
UNIVERSAL BATTERY COMPATIBILITY - Seamlessly charges 12V/24V lead acid and LiFePO4 batteries from cars to motorcycles.

The LVYUAN 12V/24V Smart Battery Charger delivers up to 40A fast charging with multi-stage and trickle modes, supporting a wide range of battery types including LiFePO4 and lead acid. Featuring an intelligent LED display and comprehensive safety protections, it also includes a repair mode to restore old or deeply discharged batteries, making it an essential tool for professional-grade vehicle battery maintenance.

Specifications

ASIN	B0DMD2C942
Amperage	40 Amps
Best Sellers Rank	#1,816,734 in Automotive ( See Top 100 in Automotive ) #2,758 in Battery Chargers
Brand	LVYUAN
Color	Black
Current Rating	40 Amps
Customer Reviews	3.4 out of 5 stars 6 Reviews
Input Voltage	120 Volts (AC)
Item Dimensions D x W x H	6.88"D x 7.87"W x 4.5"H
Item Weight	3.7 Pounds
Manufacturer	Guangzhou LVYUAN Technology Co., Ltd.
Mfr Part Number	40A-PRO
Model Number	40A-PRO black
Output Voltage	12 Volts (DC)
Product Dimensions	6.88"D x 7.87"W x 4.5"H
Specification Met	UL, CE, FCC, IEC

Reviews

L**S

Good work

Good

23.03.2026

H**E

LVYUAN 12V/24V 10A/20A/40A Battery Charger with Trickle BC-400 PRO

Over charges battery, does not do as it promise, 😒 damage my batteries

12.05.2025

A**Z

Bieno

Lo usé en una batería de 475 ah funcionó muy bien,la cargo

12.03.2026

G**J

Charges fast works good

Works good for me charges much faster than the other typical 20 amp ones. I have two 12-volt lithium batteries connected in parallel so this charges them up real fast and it works good

5.02.2026

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